CN209623896U - A kind of sealing device of external temperature measurement platinum thermal resistor - Google Patents
A kind of sealing device of external temperature measurement platinum thermal resistor Download PDFInfo
- Publication number
- CN209623896U CN209623896U CN201920293537.XU CN201920293537U CN209623896U CN 209623896 U CN209623896 U CN 209623896U CN 201920293537 U CN201920293537 U CN 201920293537U CN 209623896 U CN209623896 U CN 209623896U
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- CN
- China
- Prior art keywords
- resistance thermometer
- thermometer sensor
- platinum resistance
- platinum
- sealing device
- 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.)
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Abstract
The utility model discloses a kind of sealing devices of external temperature measurement platinum thermal resistor, including fitting body, locking nut, cap nut, O-ring, gasket seal and specific structure platinum resistance thermometer sensor,.It is provided with a platinum resistance thermometer sensor, installation passage inside sealing device, platinum resistance thermometer sensor, ontology is sealed with O-ring.Platinum resistance thermometer sensor, is mounted on inside sealing device without terminal box, ontology, can be fine-tuned to platinum resistance thermometer sensor, fitting depth with metal plate hand rotation platinum resistance thermometer sensor, be fastened after depth adjustment is good with locking nut.Sealing device cap nut has the hickey connecting with platinum resistance thermometer sensor, thermometric line protection pipe, can connect protection protection of pipe thermometric line.
Description
Technical field
The utility model belongs to measuring instrumentss field of sealing technology, and in particular to a kind of sealing dress of external temperature measurement platinum thermal resistor
It sets.
Background technique
Dismounting work is carried out in device external for convenience or is not easy to for fear of device structure factor using built-in platinum thermoelectricity
When resistance, many mechanical equipments can use external temperature measurement platinum thermal resistor.However, external platinum resistance thermometer sensor, is often with a size
Biggish terminal box occupies biggish installation space, when installation space is compacter often because platinum resistance thermometer sensor, terminal box is larger
And it is difficult to arrange or occur dismounting difficulty.It is also for the sealing effect of external platinum resistance thermometer sensor, that equipment inside is danger medium
The factor for wanting emphasis to consider, and platinum resistance thermometer sensor, fitting depth is sometimes needed by fine-tuning, accurately controlling.
Utility model content
The utility model provides a kind of sealing device of external temperature measurement platinum thermal resistor, which can be to platinum heat
The fitting depth of resistance is fine-tuned, is accurately controlled, and occupancy installation space is small, and sealing effect is good.
The sealing device of this kind of external temperature measurement platinum thermal resistor, by fitting body, locking nut, cap nut, O-ring, close
Gasket and specific structure platinum resistance thermometer sensor, composition.A platinum resistance thermometer sensor, installation passage is provided with inside sealing device, with O-ring pair
Platinum resistance thermometer sensor, ontology is sealed.
Preferably, on the platinum resistance thermometer sensor, ontology with the outer circle of O-ring contact site have lesser roughness and with
Fitting body has lesser fit clearance, to guarantee that sealing effect is good and convenient for disassembly and assembly.
Preferably, reach is preferably longer on platinum resistance thermometer sensor, ontology, to guarantee having biggish fitting depth adjustable range.
Preferably, thread pitch wants small on platinum resistance thermometer sensor, ontology, to fine-tune to fitting depth.
Preferably, platinum resistance thermometer sensor, ontology upper surface is preferably equipped with four directions, hexagonal or flat gesture, to rotate platinum thermoelectricity with spanner
Resistance adjusts fitting depth.
Preferably, platinum resistance thermometer sensor, lower end diameter is preferably slightly smaller than O-ring installation position diameter dimension, and in two differences
Diameter junction has a bit of guiding circular conical surface, so as to platinum resistance thermometer sensor, insertion more not easy damaged O-ring smoothly and when being inserted into.
Preferably, the O-ring is at least one, more than one air-tightness is more preferable.
Preferably, fitting body and apparatus casing use thread connection, fitting body installation end face must be sealed, close to guarantee
Seal effect.
Preferably, gasket seal is used between cap nut and fitting body, so that sealing effect is more excellent.
Preferably, there is the cap nut hickey to connect with platinum resistance thermometer sensor, thermometric line protection pipe, realization pair
The protection of thermometric line.
Compared with the existing technology, the beneficial effects of the utility model are as follows:
(1) the utility model can be revolved by being provided with four directions, hexagonal or flat gesture on platinum resistance thermometer sensor, ontology by external key
Turn platinum resistance thermometer sensor, and fine-tune platinum resistance thermometer sensor, fitting depth, platinum resistance thermometer sensor, position is fixed with locking nut again after adjusting, with full
The needs that foot difference occasion platinum resistance thermometer sensor, fitting depth fine-tunes；
(2) the utility model is sealed platinum resistance thermometer sensor, ontology using O-ring, to easy leakage, inflammable and explosive medium
Sealing effect is more preferable；
(3) the utility model uses the platinum resistance thermometer sensor, of specific structure shape, has given up big terminal box, and platinum heat is greatly reduced
Resistance installation space demand, this reduction effect are especially apparent minor diameter platinum resistance thermometer sensor,.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the sealing device of the first external temperature measurement platinum thermal resistor in the prior art；
Fig. 2 is the structural schematic diagram of the sealing device of second of external temperature measurement platinum thermal resistor in the prior art；
Fig. 3 is the structural schematic diagram of the sealing device of the external temperature measurement platinum thermal resistor of the utility model.
Specific embodiment
The sealing device of the utility model is further described with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the sealing device of the first external temperature measurement platinum thermal resistor in the prior art, can by Fig. 1
Know, which includes a fitting body 14 being mounted on apparatus casing, uses gasket between the fitting body 14 and apparatus casing
Piece 15 seals.With spanner screwing hermetic nut 12, oppress nipple 13,13 ontology lower end bulb compressive deformation of nipple and be close to
Sealing function is generated on 14 inner conical surface of fitting body, 13 ontology inner hole compressive deformation of nipple and hold tightly platinum resistance thermometer sensor, outer circle generation
Sealing function.The design feature of the device is as follows: terminal box is larger, occupies larger installation space, in compact-sized space
It is difficult easily to there is dismounting；Nipple has certain sealing function as sealing element, but due to for metal contact seal, for easy
It leaks, the sealing effect of inflammable and explosive medium is difficult to ideal；Temperature measurement platinum thermal resistor fitting depth size L can only be adjusted roughly, no
It can fine-tune.
Fig. 2 is the structural schematic diagram of the sealing device of another external temperature measurement platinum thermal resistor in the prior art, by Fig. 2
It is found that the device includes the fitting body 24 being mounted on apparatus casing, gasket seal is used between the fitting body 24 and apparatus casing
25 sealings.When with spanner screwing hermetic nut 22, elastic sealing elements 23 are oppressed, 23 both ends bulb of elastic sealing elements is by buckling
Shape and generate sealing function.The design feature of the device is as follows: terminal box is larger, larger installation space is occupied, compact-sized
Space in dismounting easily occur difficult；Elastic sealing elements both ends are bulb, platinum resistance thermometer sensor, outer circle can be held at two tightly and to platinum heat
Resistance generates sealing function twice, and sealing effect is better than Fig. 1, but due to being also metal contact seal, for easily leaking, inflammable
The sealing effect of explosive medium is limited；Elastic sealing elements both ends be bulb, for guarantee sealing effectively, both ends bulb need to generate compared with
Big compressive deformation, when and wall thickness smaller in platinum resistance thermometer sensor, size is smaller, the pressure acted on elastic sealing elements has and makes platinum
The danger of annular zanjon is nipped off or pinched to thermal resistance, seriously affects sealing effect and platinum resistance thermometer sensor, service life；Thermometric platinum heat
Resistance fitting depth size L can only be adjusted roughly, cannot be fine-tuned.
Fig. 3 is the structural schematic diagram of the sealing device of the utility model, from the figure 3, it may be seen that the device includes being mounted on equipment
Fitting body 34 on shell is sealed between the fitting body 34 and apparatus casing with gasket seal 35.With O-ring 36 to platinum resistance thermometer sensor,
37 are sealed.Platinum resistance thermometer sensor, 37 is equipped with four directions, six sides or flat gesture without terminal box, body upper end, should with spanner rotation
Four directions, six sides or flat gesture, can drive platinum resistance thermometer sensor, to rotate, to adjust platinum resistance thermometer sensor, fitting depth L, position adjust after again
It is fastened with locking nut 32.In addition, being sealed between cap nut 31 and fitting body 34 with gasket seal 33.Cap nut 31
There is hickey to connect with platinum resistance thermometer sensor, cable for measuring temperature protection pipe, realizes the protection to thermometric line.The device has the advantages that
Without terminal box, it is small to occupy installation space；Platinum resistance thermometer sensor, insertion depth can easily be accommodated；Using seal with O ring, effect is good, is suitable for
High pressure zero leakage occasion solves the sealing structure defect of Fig. 1, Fig. 2.
Claims (3)
1. a kind of sealing device of external temperature measurement platinum thermal resistor, including it is fitting body, locking nut, cap nut, O-ring, close
Gasket and platinum resistance thermometer sensor, it is characterised in that:
It is provided with a platinum resistance thermometer sensor, installation passage inside the sealing device, passes through between the installation passage and installation ontology
Seal with O ring；
With the screw thread for fine-tuning fitting depth on the platinum resistance thermometer sensor, ontology, the locking nut pacifies platinum resistance thermometer sensor,
Dress depth is fastened；
Without terminal box, the cap nut has to be connect the platinum resistance thermometer sensor, ontology with platinum resistance thermometer sensor, thermometric line protection pipe
Hickey.
2. the sealing device of external temperature measurement platinum thermal resistor according to claim 1, which is characterized in that the O-ring
It is one or several.
3. the sealing device of external temperature measurement platinum thermal resistor according to claim 1, which is characterized in that the platinum thermoelectricity
It is provided with and is convenient for the four directions of metal plate hand rotation, six sides or flat gesture on resistance ontology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293537.XU CN209623896U (en) | 2019-03-08 | 2019-03-08 | A kind of sealing device of external temperature measurement platinum thermal resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293537.XU CN209623896U (en) | 2019-03-08 | 2019-03-08 | A kind of sealing device of external temperature measurement platinum thermal resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209623896U true CN209623896U (en) | 2019-11-12 |
Family
ID=68456117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920293537.XU Active CN209623896U (en) | 2019-03-08 | 2019-03-08 | A kind of sealing device of external temperature measurement platinum thermal resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209623896U (en) |
-
2019
- 2019-03-08 CN CN201920293537.XU patent/CN209623896U/en active Active
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