Immersed pump system in low-temperature tank

A technology of submersible pump and low temperature tank, applied in the field of submersible pump system in low temperature tank, can solve problems such as submersible pump damage, and achieve the effects of convenient maintenance, convenient installation and disassembly, and reduced waste.

Inactive Publication Date: 2020-07-14
ZIBO BOSHAN LVYUAN GAS EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the liquid level of the storage tank is sufficient, if the valve is misoperated (opening is not enough) or the liquid in the p

Method used

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  • Immersed pump system in low-temperature tank
  • Immersed pump system in low-temperature tank
  • Immersed pump system in low-temperature tank

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with accompanying drawing.

[0042] Such as Figure 1-3 As shown, a submersible pump system in a low-temperature tank according to the present invention includes a low-temperature tank 1, and also includes:

[0043] A pump well 2 arranged in the cryogenic tank 1 for isolating the cryogenic tank 1 and the submersible pump 3;

[0044] Located on the upper part of the pump well 2, it is used to install the pump well mounting seat 5 of the pump well 2;

[0045] The top plate 11 provided on the mounting base 5 on the pump well;

[0046] The lower part of the pump well 2 is provided with a valve body 6, and the lower part of the valve body 6 is connected to the valve plate 7 through an elastic assembly;

[0047] The upper part of the cryogenic tank 1 is provided with a gas phase pipeline 4, and the gas phase pipeline 4 is provided with a gas phase valve 12, and the gas phase pipeline 4 passes through the ...

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Abstract

The invention relates to an immersed pump system in a low-temperature tank and belongs to the technical field of low-temperature liquid conveying. The problems that an existing immersed pump is not convenient to install and poor in use effect are solved. The immersed pump system comprises the low-temperature tank and an immersed pump and further comprises a pump well which is arranged in the low-temperature tank and is used for isolating the low-temperature tank and the immersed pump, a pump well upper installation seat which is arranged at the upper portion of the pump well and used for installing the pump well, and a top plate arranged on the pump well upper installation seat. A valve body is arranged at the lower portion of the pump well, and the lower portion of the valve body is connected with a valve plate through an elastic assembly. A gas phase pipeline is arranged at the upper portion of the low-temperature tank. A gas phase valve is arranged on the gas phase pipeline. The gasphase pipeline passes through the gas phase valve, then penetrates the pump well upper installation seat and then communicates with the pump well. An air inlet pipeline at the upper portion of the gas phase pipeline is provided with a nitrogen valve.

Description

technical field [0001] The invention relates to a submersible pump system in a low-temperature tank, which belongs to the technical field of low-temperature gasification liquid transportation. Background technique [0002] Cryogenic liquids such as liquefied natural gas have the characteristics of low temperature (atmospheric pressure, liquefied natural gas is -172°C), danger, and easy gasification. The liquid pump pumps the pool, and then uses the submersible pump to pressurize and transport. In order to avoid the gasification of the liquid in the pump, the submersible pump needs a certain level of backfill liquid during operation; due to the resistance loss and certain cold loss in the pipeline between the storage tank and the submersible pump, there must be a higher liquid level in the storage tank In order to ensure the normal operation of the submersible pump. Even if the liquid level of the storage tank is sufficient, in case of misoperation of the valve (insufficien...

Claims

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Application Information

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IPC IPC(8): F04D13/08F04D29/18F04D7/00F04D29/00F04D29/66F04D29/60
CPCF04D7/00F04D13/08F04D29/007F04D29/185F04D29/605F04D29/669
Inventor 翟鲁涛岳军霍岗宗秀山
Owner ZIBO BOSHAN LVYUAN GAS EQUIP CO LTD
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