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Low-temperature liquid pump

A low-temperature liquid and low-temperature gas technology, which is applied in the direction of special fluid pumps, liquid fuel engines, pumps, etc., can solve problems such as leakage of cooling capacity, and achieve the effects of reducing leakage, reducing circulation space, and reducing leakage of cooling capacity

Pending Publication Date: 2020-04-10
深圳市开迩文科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a cryogenic liquid pump to solve the technical problem of easy leakage of cooling capacity in the prior art

Method used

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  • Low-temperature liquid pump
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Embodiment Construction

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations...

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Abstract

The invention provides a low-temperature liquid pump for conveying low-temperature liquid. The low-temperature liquid pump comprises a motor and a pump body; the pump body comprises a pump shell, a transmission shaft arranged in the pump shell and connected with an output end of the motor, an impeller connected to the end, deviated from the motor, of the transmission shaft, and a cold shrinkage piece sleeved around the transmission shaft; a radial gap is formed between the cold shrinkage piece and the transmission shaft; and when the low-temperature liquid is volatilized to form low-temperature gas flowing through the radial gap, the cold shrinkage quantity of the cold shrinkage piece is higher than the cold shrinkage quantity of the transmission shaft. The low-temperature liquid pump is provided with the cold shrinkage piece sleeved on the transmission shaft; and when the low-temperature liquid is volatilized, and the generated low-temperature gas is leaked to one end of the motor through the radial gap around the transmission shaft, the cold shrinkage piece can generate cold shrinkage to reduce the radial gap, so that the circulating space of the low-temperature gas is reduced, the leakage quantity of the low-temperature gas is reduced, and the cold leakage is reduced.

Description

technical field [0001] The invention belongs to the technical field of pumps, and more specifically relates to a cryogenic liquid pump. Background technique [0002] Cryogenic liquid pumps for transporting cryogenic liquids such as liquid oxygen, liquid nitrogen or liquefied natural gas are indispensable equipment for realizing cryogenic system circulation or cryogenic liquid transportation. , Laboratory liquid nitrogen system, etc. have a wide range of applications. The working temperature of the cryogenic liquid pump is generally from -162°C to -196°C. During its working process, the problem of cooling capacity leakage due to the heat absorption and volatilization of the cryogenic liquid often occurs. Contents of the invention [0003] The object of the present invention is to provide a cryogenic liquid pump to solve the technical problem in the prior art that cold leakage is easy to occur. [0004] In order to achieve the above object, the technical solution adopted b...

Claims

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Application Information

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IPC IPC(8): F04D7/00F04D13/06F04D29/58F04D29/04F04D29/00
CPCF04D7/00F04D13/06F04D29/007F04D29/04F04D29/5893
Inventor 王亮朱钰吉张峰徐浩
Owner 深圳市开迩文科技有限公司
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