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Nitrogen sinking type pump head

A pump head and pump body technology, which is applied in pumps, liquid variable displacement machines, machines/engines, etc., can solve the problems of high cost, large vaporization loss of liquid nitrogen extraction equipment, and complex insulation structure, etc., to achieve small vaporization loss, Easy to measure accurately, good heat preservation effect

Inactive Publication Date: 2009-07-08
UNION PLASTIC HANGZHOU MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the shortcomings of the existing liquid nitrogen extraction equipment, such as large vaporization loss, complicated equipment heat preservation structure, and high cost, and provides a liquid nitrogen extraction equipment with simple structure and small liquid nitrogen vaporization loss

Method used

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  • Nitrogen sinking type pump head

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Effect test

Embodiment Construction

[0014] Refer to attached picture

[0015] The nitrogen sinking pump head of the present invention includes a plunger pump, the pump body of the plunger pump passes through the wall of the liquid nitrogen tank 1, and the pump body and the liquid nitrogen tank 1 at the crossing point The walls are insulated and hermetically connected, the liquid inlet 21 of the plunger pump communicates with the inner cavity of the liquid nitrogen tank 1, and the liquid outlet 22 of the plunger pump is located in the liquid nitrogen tank 1. external.

[0016] The wall of the liquid nitrogen tank 1 is provided with an outer welding flange 11 and an inner welding flange 12, and the housing 23 of the plunger pump is connected to the inner welding flange 12, and the plunger The first piston rod 24 of the pump passes through the wall surface of the liquid nitrogen tank 1 through the heat insulating guide sleeve 25; The power cylinder set 27 is installed on the pump cylinder connecting seat 26 , and...

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Abstract

The invention discloses a nitrogen-sink type pump head, which comprises a plunger pump. A pump body of the plunger pump penetrates the wall of a liquid nitrogen tank, and the pump body and the wall of the liquid nitrogen tank are thermally insulated and hermetically connected at the penetrating position. A liquid inlet of the plunger pump is communicated with an inner chamber of the liquid nitrogen tank, while a liquid outlet of the plunger pump is positioned outside the liquid nitrogen tank. The pump head has the advantages that the sealing performance is good, the measurement of liquid exhausting is accurate, and the pressure of liquid exhausting changing along with the pressure change of the oil cylinder can be controlled accurately.

Description

technical field [0001] The invention relates to a device for extracting and transporting liquid nitrogen in a liquid nitrogen tank. technical background [0002] The liquid nitrogen tank is a common way of storing and distributing liquid nitrogen. When using it, a certain amount of liquid nitrogen in the tank needs to be extracted. However, the boiling point of liquid nitrogen is very low (-196 degrees Celsius). After being drawn out from the low-temperature tank, it will vaporize rapidly when it encounters a pipeline at room temperature. Energy waste. [0003] In order to reduce vaporization, it is necessary to take a large number of thermal insulation measures on the extraction equipment, which increases the cost, and the equipment is too complicated and inconvenient to use. Even so, 30% of the liquid nitrogen is still vaporized and lost during the pumping process. Contents of the invention [0004] The invention aims to solve the shortcomings of the existing liquid n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B15/08
Inventor 韩志翔
Owner UNION PLASTIC HANGZHOU MACHINERY
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