CN218840479U - A adsorbing material filling opening structure for ultra-low temperature purifier - Google Patents
A adsorbing material filling opening structure for ultra-low temperature purifier Download PDFInfo
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- CN218840479U CN218840479U CN202222765834.4U CN202222765834U CN218840479U CN 218840479 U CN218840479 U CN 218840479U CN 202222765834 U CN202222765834 U CN 202222765834U CN 218840479 U CN218840479 U CN 218840479U
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- dewar
- filling opening
- injection port
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Abstract
The utility model discloses an adsorbing material filling opening structure for ultra-low temperature purifier for adsorber injection adsorbing material in to the dewar, take over including the adsorbing material filling opening that is used for injecting into and discharge adsorbing material, the adsorbing material filling opening is taken over one end and is linked together with the adsorber in the dewar, the adsorbing material filling opening is taken over the other end and is stretched out the dewar and be located its outside room temperature end. The utility model discloses in, through merging into an interface with adsorbing material filling opening and discharge port, the adsorbing material suction of accessible external equipment in with the adsorber, with the adsorbing material filling opening, the design is held the installation at room temperature, and the room temperature end need not consider the material shrinkage problem under the low temperature, only needs to consider withstand voltage problem, can design into detachable construction connection such as flange, brings very big facility for the maintenance of clarifier, has improved the efficiency of changing a design.
Description
Technical Field
The utility model relates to a gas separation technical field, more specifically relate to an adsorbing material filling opening structure for ultra-low temperature purifier.
Background
Helium is a scarce strategic resource, and at present natural gas is the only commercial source of helium. China belongs to a poor helium country, and helium resources are seriously dependent on import. With national defense construction, science and technology and economic development of China, the demand and annual import of helium in the fields of industrial production, scientific research and the like are continuously increased, and the strong contradiction between the increasing demand of helium and the limited helium resource transfers the focus to the helium-rich tail gas which is directly exhausted. The low-concentration helium is recycled and purified, and the improvement of the helium recycling rate becomes a good method for solving the contradiction. The helium gas is recycled, so that the production and scientific research cost can be reduced, the problem that the industrial enterprises cannot expand production due to insufficient helium resource supply is solved, and the method has important strategic significance for saving and protecting the non-renewable helium gas resource. The helium purification technology is mainly classified into a high-pressure low-temperature condensation and adsorption method, a membrane separation method, a pressure swing adsorption method and a low-temperature condensation adsorption method according to different conditions such as working pressure and use of a cold source. The helium high-pressure low-temperature condensation and adsorption method is a classic and reliable purification technology, is mature in process and is widely applied to the purification process of high-purity helium. The technology utilizes the characteristic of low boiling point of helium, and condenses and separates impurities such as nitrogen in mixed gas by using cold sources such as liquid nitrogen, and then removes the impurities contained in the helium for the second time by using an adsorbing material to obtain the high-purity helium.
In the purifier, key parts of an adsorber (containing activated carbon, molecular sieve and other adsorbing materials inside) work in an extreme environment of high pressure (1 MPa-30 MPa), high and low temperature (400K during activation and regeneration and 77K during adsorption) for a long time, the internal adsorbing materials need to be replaced periodically to ensure the adsorption effect of the adsorbing materials.
Referring to fig. 1, the existing adsorbing material injection port and exhaust port structure is that holes are respectively formed in an upper end enclosure and a lower end enclosure of an adsorber, a section of stainless steel pipe is led out, a blind plate is used for blocking an interface, and in order to ensure safety and prevent helium gas from leaking at low temperature, the interface adopts a fully welded structure form with a reliable structure. When the adsorption material is replaced, the adsorber needs to be lifted from the interior of the Dewar, then the injection port and the discharge port of the adsorption material are cut open by using a cutting machine, and after the adsorption material is replaced, the interface is welded again, and the pressurization and leakage detection are carried out. The structure leads to the complex replacement process of the adsorbing material, the workload is huge, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that how simplify the structure of adsorbing material filling opening to improve adsorbing material and change efficiency.
The utility model discloses a following technical means realizes solving above-mentioned technical problem: the utility model provides an adsorbing material injection opening structure for ultra-low temperature purifier for to the adsorber injection adsorption material in the dewar, take over including the adsorbing material injection opening that is used for injecting into and discharges adsorbing material, the adsorber in adsorbing material injection opening takeover one end and the dewar is linked together, the adsorbing material injection opening takeover other end stretches out the dewar and is located its outside room temperature end.
Through merging into an interface with adsorbing material injection port and discharge port, the adsorbing material suction in the adsorber can be carried out to accessible external equipment, and the injection port design of adsorbing material is held the installation at room temperature, and the room temperature end need not consider the material shrinkage problem under the low temperature, only needs to consider withstand voltage problem, can design into detachable construction connection such as flange, brings very big facility for the maintenance of clarifier, has improved the efficiency of changing a design.
As preferred technical scheme, the end fixing that the adsorbing material injection port was taken over has adsorbing material injection port blind plate, and adsorbing material injection port was taken over and is connected with adsorbing material injection port blind plate for dismantling, and through taking over adsorbing material injection port and all designing adsorbing material injection port blind plate and holding at room temperature, need not consider the material shrinkage problem under the low temperature, only need consider withstand voltage problem, can design into detachable construction connection such as flange, brings very big facility for the maintenance of purifier.
As the preferred technical scheme, the adsorbing material injection port connecting pipe is made of stainless steel, liquid nitrogen loss caused by heat leakage generated by solid conduction is reduced, the stainless steel is low temperature resistant, high in strength, easy to weld and small in heat conductivity coefficient, the stainless steel is led to a normal temperature end from liquid nitrogen, and the liquid nitrogen loss caused by heat leakage generated by solid conduction can be ignored.
As a preferred technical scheme, the dewar comprises a dewar body and an upper flange, wherein the dewar body and the upper flange are fixed in a sealing manner and form a closed cavity structure in a surrounding manner.
As the preferred technical scheme, a temperature sensor and a heater are arranged in the Dewar and are fixedly hoisted with the upper flange.
As a preferred technical scheme, a helium gas inlet pipeline, a helium gas outlet pipeline, a liquid nitrogen inlet pipeline and a nitrogen gas discharge pipeline are fixedly connected to the upper flange.
The utility model has the advantages of:
(1) The utility model discloses in, through merging into an interface with adsorbing material filling opening and discharge port, the adsorbing material suction of accessible external equipment in with the adsorber, with the adsorbing material filling opening, the design is held the installation at room temperature, and the room temperature end need not consider the material shrink problem under the low temperature, only needs to consider withstand voltage problem, can design into detachable construction connection such as flange, brings very big facility for the maintenance of clarifier, has improved the efficiency of changing a design.
(2) The utility model discloses in, through all designing adsorbing material filling opening takeover and adsorbing material filling opening blind plate in room temperature end, need not consider the material shrinkage problem under the low temperature, can design into detachable construction connection such as flange, for the maintenance of clarifier brings very big facility, take over the adsorbing material filling opening and set up to stainless steel, reduced the liquid nitrogen loss that causes because of the heat leakage that the solid conduction produced.
Drawings
Fig. 1 is a schematic structural diagram of an adsorbing material injection port structure for an ultra-low temperature purifier in the background art of the present invention;
fig. 2 is a schematic structural diagram of an adsorbing material injection port structure for an ultra-low temperature purifier according to an embodiment of the present invention;
reference numerals: 1. a Dewar; 2. an adsorber; 3. an adsorbing material injection port connecting pipe; 4. an adsorbing material injection port blind plate; 5. and an upper flange.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 2, an adsorbing material injection port structure for an ultra-low temperature purifier is used for injecting adsorbing materials into an adsorber 2 in a dewar 1, and comprises an adsorbing material injection port connecting pipe 3 and an adsorbing material injection port blind plate 4, wherein the adsorbing material injection port connecting pipe 3 is used for injecting and discharging the adsorbing materials, one end of the adsorbing material injection port connecting pipe 3 is communicated with the adsorber 2 in the dewar 1, the other end of the adsorbing material injection port connecting pipe 3 extends out of the dewar 1 and is positioned at a room temperature end outside the dewar 1, the end part of the adsorbing material injection port connecting pipe 3 is fixedly connected with the adsorbing material injection port blind plate 4, the adsorbing material injection port connecting pipe 3 is detachably connected with the adsorbing material injection port blind plate 4, and the adsorbing material injection port connecting pipe 3 and the adsorbing material injection port blind plate 4 are both positioned at the room temperature end;
the injection port and the discharge port of the adsorbing material are combined into an interface, so that the adsorbing material in the adsorber 2 can be sucked out through external equipment (such as a dust collector), the adsorbing material injection port connecting pipe 3 and the adsorbing material injection port blind plate 4 are designed to be installed at a room temperature end, the problem of material shrinkage at low temperature is not considered at the room temperature end, and only the problem of pressure resistance is considered, so that the adsorbing material injection port connecting pipe can be designed to be connected with a flange and other detachable structures, great convenience is brought to the maintenance of a purifier, and the sample changing efficiency is improved;
it should be noted that, in this embodiment, the adsorbing material injection inlet connecting pipe 3 is made of stainless steel, the stainless steel is low temperature resistant, high in strength, easy to weld and small in heat conductivity coefficient, liquid nitrogen is led to the normal temperature end, and liquid nitrogen loss caused by heat leakage due to solid conduction is negligible, so that liquid nitrogen loss caused by heat leakage due to solid conduction is reduced.
Referring to fig. 2, dewar 1 includes dewar body and upper flange 5, dewar body and upper flange 5 are sealed fixed, and enclose and close and form a inclosed cavity structures, be equipped with temperature sensor in dewar 1, the heater, and it is all fixed with upper flange 5 hoist and mount, fixedly connected with helium admission line on the upper flange 5, helium gas outlet pipe, liquid nitrogen inlet pipe, nitrogen gas exhaust pipe, in the past need break off peripheral pipeline (cutting or swing joint demolish) and need wholly lift up whole upper flange subassembly when changing the adsorption material, this embodiment can be under the condition of not changing peripheral pipe connection, not lifting up the flange subassembly, accomplish the adsorption material and change, efficiency is greatly improved, and cost is saved.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. The utility model provides an adsorbing material filling opening structure for ultra-low temperature purifier for adsorb ware (2) injection adsorbing material in to dewar (1), its characterized in that, including adsorbing material filling opening takeover (3) that is used for injecting into and discharge adsorbing material, adsorbing material filling opening takeover (3) one end is linked together with adsorber (2) in dewar (1), adsorbing material filling opening takeover (3) other end stretches out dewar (1) and is located its outside room temperature end.
2. The structure of an injection port of an adsorption material for an ultra-low temperature purifier as claimed in claim 1, wherein the adapter tube (3) of the injection port of the adsorption material is fixed with a blind plate (4) of the injection port of the adsorption material, and the adapter tube (3) of the injection port of the adsorption material is detachably connected with the blind plate (4) of the injection port of the adsorption material.
3. The structure of an injection port of an adsorbing material for an ultra-low temperature purifier as claimed in claim 1, wherein the connection tube (3) of the adsorbing material is made of stainless steel.
4. The structure of claim 1, wherein the dewar (1) comprises a dewar body and an upper flange (5), the dewar body and the upper flange (5) are sealed and fixed, and form a closed cavity structure.
5. The adsorbing material injection port structure for the ultra-low temperature purifier as claimed in claim 4, wherein a temperature sensor and a heater are arranged in the Dewar (1), and the Dewar and the upper flange (5) are fixed in a hoisting manner.
6. The structure of the injection port of the adsorbing material for an ultra-low temperature purifier as claimed in claim 4, wherein the upper flange (5) is fixedly connected with a helium gas inlet pipeline, a helium gas outlet pipeline, a liquid nitrogen inlet pipeline and a nitrogen gas outlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222765834.4U CN218840479U (en) | 2022-10-18 | 2022-10-18 | A adsorbing material filling opening structure for ultra-low temperature purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222765834.4U CN218840479U (en) | 2022-10-18 | 2022-10-18 | A adsorbing material filling opening structure for ultra-low temperature purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218840479U true CN218840479U (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222765834.4U Active CN218840479U (en) | 2022-10-18 | 2022-10-18 | A adsorbing material filling opening structure for ultra-low temperature purifier |
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| CN (1) | CN218840479U (en) |
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2022
- 2022-10-18 CN CN202222765834.4U patent/CN218840479U/en active Active
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