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Low-temperature pump tank for LNG (liquefied natural gas) vehicle fueling station

A technology of gas filling station and cryogenic pump, which is applied to the method of container discharge, gas/liquid distribution and storage, container filling method, etc., and can solve the problems of flange cover icing and flange cover frosting, etc.

Inactive Publication Date: 2013-10-09
TIANJIN QIANGANG GAS EQUIP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used cryogenic pump pool will freeze when the cryogenic liquid flows out through the air return port, and sometimes the position of the flange cover will freeze.
In addition, when the cryogenic liquid in the cryopump pool is pumped out by the cryopump, frosting will also occur on the flange cover

Method used

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  • Low-temperature pump tank for LNG (liquefied natural gas) vehicle fueling station
  • Low-temperature pump tank for LNG (liquefied natural gas) vehicle fueling station

Examples

Experimental program
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Embodiment

[0017] Such as figure 2 Shown is the low temperature pump pool involved in the present invention, including a pump pool 1, the upper opening of the pump pool 1 is sealed with a flange cover 2, the middle of the flange cover 2 is provided with a liquid outlet pipe 3, and the side of the pump pool 1 also has Liquid inlet 5;

[0018] Such as figure 1 Shown is the low temperature pump pool in the prior art, the end of the outlet pipe 3 is flush with the flange cover 2; as figure 2 As shown, the length of the end of the outlet pipe 3 extending into the pump pool 1 is one-fifth to one-third of the height of the pump pool. The liquid outlet pipe is extended to the inside of the cryopump pool, so that when the cryogenic liquid is pumped out through the cryopump, the flange cover of the pump pool will not be frosted.

[0019] Such as figure 1 As shown, in the prior art, the air return port 4 is located below the flange cover 2, and the distance between the two is very short. Suc...

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PUM

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Abstract

The invention discloses a low-temperature pump tank for an LNG (liquefied natural gas) vehicle fueling station. The low-temperature pump tank comprises a pump tank body, wherein a blind flange is sealed on an upper opening of the pump tank body; a drain pipe is arranged in the middle of the blind flange; and the length of the end part of the drain pipe extending inside the pump tank body is 1 / 5 to 1 / 3 of height of the pump tank body. By adopting the low-temperature pump tank, the drain pipe extends inside the low-temperature pump tank, so that the blind flange of the pump tank does not generate the frosting phenomenon when the low-temperature liquid is pumped out through a low-temperature pump.

Description

technical field [0001] The invention relates to the technical field, in particular to a low-temperature pump pool for an LNG vehicle filling station. Background technique [0002] In the LNG vehicle filling station, LNG is usually stored in a cryogenic pump pool for refueling. LNG refers to liquefied natural gas, and BOG refers to the gas formed after gasification of liquefied natural gas. [0003] In the currently commonly used cryogenic pump pool, when the cryogenic liquid flows out through the air return port, sometimes the position of the flange cover will freeze. In addition, when the cryogenic liquid in the cryopump pool is pumped out by the cryopump, frosting will also occur on the flange cover. Contents of the invention [0004] The object of the present invention is to aim at the technical defects existing in the prior art, and provide a low-temperature pump pool for LNG vehicle gas filling stations without icing at the gas return port and without frosting at the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C13/06F17C13/00
Inventor 辛宝岐
Owner TIANJIN QIANGANG GAS EQUIP TECH
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