CN219933716U - Protective cover of vacuum gauge of low-temperature storage tank - Google Patents
Protective cover of vacuum gauge of low-temperature storage tank Download PDFInfo
- Publication number
- CN219933716U CN219933716U CN202320876853.6U CN202320876853U CN219933716U CN 219933716 U CN219933716 U CN 219933716U CN 202320876853 U CN202320876853 U CN 202320876853U CN 219933716 U CN219933716 U CN 219933716U
- Authority
- CN
- China
- Prior art keywords
- vacuum gauge
- sealing
- protective cover
- sleeve
- connector
- 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
- 230000001681 protective effect Effects 0.000 title claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 101100074187 Caenorhabditis elegans lag-1 gene Proteins 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to the technical field of vacuum gauge protection, and particularly discloses a protective cover of a vacuum gauge of a low-temperature storage tank, which comprises the following components: the protective sleeve is sleeved on the surface of the vacuum gauge pipe; the sealing sleeve is sleeved at the port of the vacuum gauge pipe; the vacuum extraction assembly comprises a sealing rod which is in sliding connection with the protective sleeve and is internally provided with a cavity, a piston which is in sliding sealing connection with the sealing rod and a piston rod which is driven by the piston to slide, one end of the sealing rod is provided with a connector which is communicated with the cavity and can seal the sealing sleeve, the side wall of the sealing rod is provided with an air outlet, and the connector and the air outlet are internally provided with one-way valves, so that vacuum gauge pins can be protected from being damaged by external force, the influence of external environment (such as water vapor and the like) on the vacuum gauge pins can be reduced, and the problem that the pins cannot read parameter values normally due to poor contact caused by oxidation is solved.
Description
Technical Field
The utility model relates to the technical field of vacuum gauge protection, and particularly discloses a protective cover of a vacuum gauge of a low-temperature storage tank.
Background
The low-temperature storage tank is a vertical or horizontal double-layer vacuum insulation storage tank for storing liquid oxygen, nitrogen, argon, carbon dioxide and other mediums. The inner container is made of austenitic stainless steel; according to the different areas of users, Q235-B, Q245R or 345R is selected as the outer container material, and the interlayer of the inner container and the outer container is filled with heat insulation material, such as pearly-lustre sand or aluminum foil, heat insulation cotton and vacuumized.
The vacuum gauge is a device for measuring the vacuum degree of the vacuum environment, and the principle of measuring the vacuum degree of the vacuum environment is that the vacuum gauge transmits the measured vacuum degree value to the vacuum gauge through an electric signal, and the vacuum gauge converts the electric signal into a corresponding vacuum degree digital value to display.
Since the cryogenic tanks are mostly installed in outdoor environments, the vacuum gauge is also exposed to the external environment, which is susceptible to the external humid environment and air oxidation, resulting in corrosion and rust of the pins of the vacuum gauge, in which case there will be a large error in the measured values using the vacuum gauge connection.
The vacuum gauge is damaged, the replacement process and time and labor are wasted, firstly, medium in the low-temperature storage tank is emptied, then, the re-vacuumizing is needed, the time spent is long according to the size of the tank body for at least 3-7 days, the protection of the vacuum gauge in the prior art is to weld a protective fence on the outer side of the gauge, the breakage of the gauge caused by external impact is protected to a certain extent, but the protection of oxidation problems such as pins is not affected, the vacuum gauge is easily affected by external humid environment and air oxidation, the pins of the vacuum gauge are corroded and rusted, and the numerical value measured by the vacuum gauge has the problem of larger error. Accordingly, the present inventors have provided a protective cover for a vacuum gauge of a cryogenic tank to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the problem that the conventional vacuum gauge is easy to corrode due to long-term exposure to air, so that a large error exists in the measurement of the vacuum degree.
In order to achieve the above object, the basic solution of the present utility model provides a protective cover for a vacuum gauge of a cryogenic tank, comprising:
the protective sleeve is sleeved on the surface of the vacuum gauge pipe;
the sealing sleeve is sleeved at the port of the vacuum gauge pipe;
the vacuum extraction assembly comprises a sealing rod which is in sliding connection with the protective sleeve and is internally provided with a cavity, a piston which is in sliding sealing connection with the sealing rod and a piston rod which drives the piston to slide, one end of the sealing rod is provided with a connector which is communicated with the cavity and can seal the sealing sleeve, the side wall of the sealing rod is provided with an air outlet, and the connector and the air outlet are internally provided with one-way valves.
Further, when the connector is positioned outside the sealing sleeve, the air outlet is positioned outside the protective sleeve; when the connector is used for plugging the sealing sleeve, the protecting sleeve is used for plugging the air outlet.
Further, the seal cover includes with connector complex first linkage segment and with vacuum gauge complex second linkage segment, all is equipped with the through-hole of mutual intercommunication between first linkage segment and the second linkage segment.
Further, the aperture of the through hole in the first connecting section is larger than that of the through hole in the second connecting section, and the connector comprises a rubber plug matched with the through hole in the first connecting section and a sealing plug matched with the through hole in the second connecting section.
Further, one end of the sealing plug far away from the rubber plug is provided with an air inlet, and the sealing plug and the rubber plug are internally provided with an air inlet channel for communicating the air inlet with the cavity.
Further, a spring sleeved on the surface of the piston rod is arranged in the containing cavity.
Further, one end of the sealing rod, which is far away from the connector, is provided with a holding sleeve, and a pull rod is arranged in the piston rod extending into the holding sleeve.
Further, friction pads capable of increasing friction force are uniformly arranged on the surface of the holding sleeve.
Further, the end parts of the pull rods are provided with barbs facing one end of the connector.
Further, the port of the protecting sleeve and the port of the sealing sleeve are both provided with horn mouths.
The principle and effect of this scheme lie in:
compared with the prior art, the utility model adopts the technical scheme that the surface of the vacuum gauge is sleeved with the protective sleeve, and then the vacuum extraction assembly is used for extracting air between the protective sleeve and the vacuum gauge, so that a sealed environment is formed between the protective sleeve and the vacuum gauge. The pin of the vacuum gauge can be protected from being damaged by external force, and the influence of external environment (such as water vapor and the like) on the pin of the vacuum gauge can be reduced, so that the problem that the pin cannot read parameter values normally due to poor contact caused by oxidation is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a protective cover for a vacuum gauge of a cryogenic tank according to an embodiment of the present utility model;
fig. 2 shows a schematic diagram of a vacuum pumping assembly in a protective enclosure of a cryogenic tank vacuum gauge according to an embodiment of the present utility model.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Reference numerals in the drawings of the specification include: the vacuum pump comprises a protective sleeve 1, a vacuum pumping assembly 2, a sealing sleeve 3, granular super absorbent resin 4, a holding sleeve 5, a sealing rod 6, a rubber plug 7, a sealing plug 8, a pull rod 9, a piston rod 10, a spring 11, a piston 12, a first one-way valve 13 and a second one-way valve 14.
A protective cover for a vacuum gauge of a cryogenic tank, the protective cover being shown in fig. 1: the device comprises a protective sleeve 1, a sealing sleeve 3 and a vacuum extraction assembly 2, and is specifically as follows:
the lag 1, lag 1 adopts the silica gel material, and the cover is established in vacuum gauge outside, consolidates through the sealant and is closely connected with the container body, and inside packing is full of particulate superabsorbent resin 4 to reduce external environment (such as steam etc.) to the influence of vacuum gauge stitch, thereby reduce the stitch because oxidation leads to the problem production that the bad parameter value of making the unable normal reading of vacuum gauge of contact, for improving sealing performance, the bottom of lag 1 sets up to the form of horn mouth.
The seal cover 3, seal cover 3 cover are established in the outside of vacuum gauge stitch, and seal cover 3 adopts the silica gel material, in order to improve sealing performance, and seal cover 3's bottom also sets up to the form of horn mouth, makes it and vacuum gauge stitch in close contact with.
The vacuum extraction assembly 2, the vacuum extraction assembly 2 comprises a sealing rod 6, a piston 12 and a piston rod 10, wherein the sealing rod 6 is in sliding connection with the protective sleeve 1, a containing cavity is formed in the sealing rod, the piston 12 is in sliding sealing connection with the containing cavity in the sealing rod 6, the piston rod 10 and the piston 12 are mutually fixed and drive the piston 12 to slide, and a spring 11 sleeved on the surface of the piston rod 10 is arranged in the containing cavity.
The top of sealing rod 6 is equipped with and holds cover 5, and piston rod 10 stretches into and holds and be equipped with pull rod 9 in the cover 5, and the both ends tip of pull rod 9 all is equipped with the barb of orientation below to the convenience is exerted, and can play the effect that prevents pull rod 9 and finger break away from. The surface of the holding sleeve 5 is uniformly provided with a friction pad capable of increasing friction force, and the friction pad is a silica gel pad or a rubber pad with stripes or grooves.
The bottom of sealing rod 6 is installed a connector, seal cover 3 includes with connector complex first linkage segment and with vacuum gauge complex second linkage segment, all be equipped with the through-hole of intercommunication between first linkage segment and the second linkage segment, the aperture that is located the through-hole of first linkage segment is greater than the aperture that is located the through-hole of second linkage segment in order to improve sealed effect, the connector include with be located first linkage segment through-hole complex plug 7 and with be located second linkage segment through-hole complex sealing plug 8, sealing plug 8 keep away from plug 7's one end is equipped with the air inlet, sealing plug 8, be equipped with the air inlet channel with air inlet and appearance chamber intercommunication in the plug 7, sealing rod 6 lateral wall is equipped with the gas outlet, gas outlet department is equipped with first check valve 13, make the air outlet only can one-way give vent to anger, air inlet department is equipped with second check valve 14, make the air inlet only can one-way air inlet.
In the implementation process of the utility model, the protecting sleeve 1 is sleeved on the surface of the vacuum gauge, then air between the protecting sleeve 1 and the vacuum gauge is extracted through the vacuum extraction component 2, at the moment, the connector is positioned between the protecting sleeve 1 and the sealing sleeve 3, the air outlet is positioned outside the protecting sleeve 1, then the pull rod 9 is manually pulled to enable the air to flow into the accommodating cavity from the air inlet and flow to the outside of the protecting sleeve 1 from the air outlet, and the reciprocating action is performed in such a way, so that a sealed environment is formed between the protecting sleeve 1 and the vacuum gauge.
The utility model adopts the technical scheme that the surface of the vacuum gauge is sleeved with the protective sleeve 1, and then the vacuum extraction assembly 2 is used for extracting air between the protective sleeve 1 and the vacuum gauge, so that a sealed environment is formed between the protective sleeve 1 and the vacuum gauge. The pin of the vacuum gauge can be protected from being damaged by external force, and the influence of external environment (such as water vapor and the like) on the pin of the vacuum gauge can be reduced, so that the problem that the pin cannot read parameter values normally due to poor contact caused by oxidation is solved.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (10)
1. A protective cover for a vacuum gauge of a cryogenic tank, comprising:
the protective sleeve is sleeved on the surface of the vacuum gauge pipe;
the sealing sleeve is sleeved at the port of the vacuum gauge pipe;
the vacuum extraction assembly comprises a sealing rod which is in sliding connection with the protective sleeve and is internally provided with a cavity, a piston which is in sliding sealing connection with the sealing rod and a piston rod which drives the piston to slide, one end of the sealing rod is provided with a connector which is communicated with the cavity and can seal the sealing sleeve, the side wall of the sealing rod is provided with an air outlet, and the connector and the air outlet are internally provided with one-way valves.
2. The protective cover of a cryogenic tank vacuum gauge of claim 1, wherein the air outlet is located outside of the protective cover when the connector is located outside of the sealing sleeve; when the connector is used for plugging the sealing sleeve, the protecting sleeve is used for plugging the air outlet.
3. The protective cover of a vacuum gauge for a cryogenic tank of claim 1, wherein the sealing sleeve comprises a first connecting section matched with the connector and a second connecting section matched with the vacuum gauge, and through holes communicated with each other are formed between the first connecting section and the second connecting section.
4. A protective cover for a vacuum gauge for a cryogenic tank according to claim 3, characterized in that the aperture of the through-hole in the first connecting section is larger than the aperture of the through-hole in the second connecting section, and the connector comprises a rubber plug cooperating with the through-hole in the first connecting section and a sealing plug cooperating with the through-hole in the second connecting section.
5. The protective cover of a vacuum gauge for a cryogenic tank of claim 4, wherein the sealing plug has an air inlet at one end thereof far from the rubber plug, and an air inlet channel for communicating the air inlet with the cavity is arranged in the sealing plug and the rubber plug.
6. The protective cover of a vacuum gauge for a cryogenic tank of claim 1, wherein a spring is disposed within the cavity and is disposed over the surface of the piston rod.
7. The protective cover of a vacuum gauge for a cryogenic tank of claim 6, wherein the sealing rod has a grip at an end thereof remote from the connector, and wherein the piston rod has a pull rod extending into the grip.
8. The protective cover of a vacuum gauge for a cryogenic tank of claim 7, wherein friction pads are uniformly provided on the surface of the grip sleeve to increase friction.
9. The protective cover for a vacuum gauge of a cryogenic tank of claim 7, wherein the ends of the tie rod are each provided with barbs facing one end of the connector.
10. The protective cover of a vacuum gauge for a cryogenic tank of claim 1, wherein the port of the protective cover and the port of the sealing sleeve are provided with flare openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320876853.6U CN219933716U (en) | 2023-04-18 | 2023-04-18 | Protective cover of vacuum gauge of low-temperature storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320876853.6U CN219933716U (en) | 2023-04-18 | 2023-04-18 | Protective cover of vacuum gauge of low-temperature storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219933716U true CN219933716U (en) | 2023-10-31 |
Family
ID=88492676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320876853.6U Active CN219933716U (en) | 2023-04-18 | 2023-04-18 | Protective cover of vacuum gauge of low-temperature storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219933716U (en) |
-
2023
- 2023-04-18 CN CN202320876853.6U patent/CN219933716U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |