CN208330702U - Liquid nitrogen pump purge gass system - Google Patents
Liquid nitrogen pump purge gass system Download PDFInfo
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- CN208330702U CN208330702U CN201820942753.8U CN201820942753U CN208330702U CN 208330702 U CN208330702 U CN 208330702U CN 201820942753 U CN201820942753 U CN 201820942753U CN 208330702 U CN208330702 U CN 208330702U
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- pipeline
- liquid nitrogen
- pump
- connection sheet
- outlet side
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Abstract
The utility model discloses a kind of liquid nitrogen pump purge gass systems, including purging pipeline, the inlet end of the purging pipeline is connected with the low pressure nitrogen tracheae by liquid nitrogen pump, the outlet side of purging pipeline is then connected with the blow valve port being arranged at the top of liquid nitrogen pump, blow valve port is located at the pump head that liquid nitrogen pump is connect with ice chest, and the outlet side for purging pipeline is equipped with valve.Solve the problem of that liquid nitrogen pump piston rod surface under cold standby state can freeze icing.
Description
Technical field
The utility model relates to liquid nitrogen pump fields, and in particular to a kind of liquid nitrogen pump purge gass system.
Background technique
Usually can all there be liquid nitrogen system in chemical field, provide nitrogen needed for the relevant apparatus and technique for chemical plant, but
Liquid nitrogen pump (horizontal, three cylinders, single-action reciprocating piston pump) for conveying liquid nitrogen is usually intermitten service, in order to guarantee scene
Production needs, and pump is in cold reserve state when shutting down, and the liquid nitrogen cooling capacity in piston cylinder can be slowly transferred to by piston rod
Bearing housing, causes to freeze on piston rod and freezes, if turn on pump at this time, to the axle envelope of pump can accelerated wear test, greatly shorten sealing
Piston rod plucking can be caused piston rod to damage by the service life of part when serious, meanwhile, when operating normally, due to sealing element
Gradually wear out, liquid nitrogen can leak out from axle envelope, threaten long-term, the stable operation of pump.
In chemical system now, there is no propose proper measure to such problem.
Utility model content
The purpose of this utility model is to provide a kind of liquid nitrogen pump purge gass systems, solve liquid nitrogen pump under cold standby state,
Piston rod surface can freeze the problem of icing.
In order to solve the above technical problems, the utility model uses following technical scheme:
A kind of liquid nitrogen pump purge gass system, including purging pipeline, the purging inlet end of pipeline and low by liquid nitrogen pump
Nitrogen tube is pressed to be connected, the outlet side for purging pipeline is then connected with the blow valve port being arranged at the top of liquid nitrogen pump, and blow valve port is located at liquid nitrogen
It pumps at the pump head being connect with ice chest, the outlet side for purging pipeline is equipped with valve.
Provided with purge gass system, nitrogen enters from the inlet end of purging pipeline, then arranges from the outlet side of purging pipeline
Out, to blowing down at the easy icing of liquid nitrogen sucker rod, the moisture near piston rod ice chest end face in air is taken away, to hinder
It only contacts to form frost from the cooling capacity of ice chest face leakage, the valve of scavenging conduit road outlet side is for controlling gas output
's.
As the further preferred of the utility model, the purging pipeline includes sequentially connected from inlet end to outlet side
Nitrogen tube linkage section, middle section and blow valve port linkage section, the middle part of nitrogen tube linkage section, the middle part in middle section and blow valve port linkage section
Middle part is equipped with bellows section.
Purging pipeline includes nitrogen tube linkage section, middle section and blow valve port linkage section, by bellows section can to linkage section,
The length of middle section and blow valve port linkage section is adjusted, and purging pipeline is made to can be suitably used for the liquid nitrogen pump of various models.
As the further preferred of the utility model, the surrounding of the blow valve port is equipped with link slot, connection around blow valve port
The notch of slot is adapted to the pipeline opening of scavenging conduit road outlet side, and the outlet side for purging pipeline is additionally provided with around purging pipeline setting
Connection sheet, the distance between the position of connection sheet setting and the pipeline opening of scavenging conduit road outlet side are equal to the depth of link slot, even
The middle part of contact pin is equipped with connection sheet screw hole, is equipped with pump head screw hole at the pump head of liquid nitrogen pump position corresponding with connection sheet screw hole, blows
It sweeps pipeline and blow valve port and is connected by being plugged in the bolt fastening at connection sheet screw hole and pump head screw hole.
When installation purging pipeline, the outlet side for purging pipeline is inserted into link slot, after insertion, the bottom of connection sheet and liquid
The surface of nitrogen pump contacts and is bonded, and makes connection sheet screw hole and pump head screw hole face, and bolt is then screwed into connection sheet screw hole and pump
Head screw hole, completes the installation of purging pipeline after tightening, be arranged such mounting structure be in order to be more convenient for purge pipeline into
Row installation and replacement, pipeline will be purged using the mode of welding by, which avoiding, is connected on blow valve port, setting link slot be in order to
Make to purge the better tightness between pipeline and blow valve port.
As the further preferred of the utility model, the two sides of the connection trench bottom are equipped with sealing ladder, seal ladder
The direction climbed from the bottom up is the cell wall of link slot of crawling toward from the center of link slot, the bottom of the pipeline opening of scavenging conduit road outlet side
Portion is equipped with the pipeline opening ladder agreed with sealing ladder.
In connection trench bottom setting sealing ladder, and it is arranged and seals in the bottom of the pipeline opening of scavenging conduit road outlet side
The pipeline opening ladder that ladder agrees with, after being purged in pipeline insertion link slot in this way, pipeline opening ladder is closely pasted with sealing ladder
It closes, so that the leakproofness of purging pipeline further increases, reduces the loss of helium leak.
As the further preferred of the utility model, the bottom of the connection sheet is in dentation, the pump head of liquid nitrogen pump and connection
The position of piece contact and the bottom of connection sheet are agreed with.
The leakproofness that the structure is connect also for raising purging pipeline with liquid nitrogen pump.
As the further preferred of the utility model, the valve is needle valve.
Pump head institute air demand is controlled to adjust by needle valve, oozes out gas slightly from piston rod.
Compared with prior art, the utility model can at least reach one in following beneficial effect:
1. solving liquid nitrogen pump under cold standby state, the problem of piston rod surface can freeze icing, shaft packing is extended
Service life, extended to from 360 hours 8000 hours or more in practice；Reduce the unplanned stop frequency of pump.
2. the length of each section of pipeline of purging can be adjusted, the applicability for purging pipeline is more preferable.
3. purging pipeline and liquid nitrogen pump junction good airproof performance.
4. due to being connected by screw bolts purging pipeline and liquid nitrogen pump, convenient for being installed, being dismantled to purging pipeline.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram that the utility model purges pipeline.
Fig. 3 is that the utility model purging pipeline connects the longitudinal section in blow valve port.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Specific embodiment 1:
Fig. 1, Fig. 2, Fig. 3 show a kind of liquid nitrogen pump purge gass system, including purging pipeline 1, the purging pipeline 1 into
Gas end is connected with the low pressure nitrogen tracheae by liquid nitrogen pump, purge the outlet side of pipeline 1 then with the blow valve port 2 that is arranged at the top of liquid nitrogen pump
It is connected, blow valve port 2 is located at the pump head that liquid nitrogen pump is connect with ice chest, and the outlet side of purging pipeline 1 is equipped with valve 3.
Provided with purge gass system, nitrogen enters from the inlet end of purging pipeline, then arranges from the outlet side of purging pipeline
Out, to blowing down at the easy icing of liquid nitrogen sucker rod, the moisture near piston rod ice chest end face in air is taken away, to hinder
It only contacts to form frost from the cooling capacity of ice chest face leakage, the valve of scavenging conduit road outlet side is for controlling gas output
's.
Specific embodiment 2:
The present embodiment is to have carried out further instruction, the purging to purging pipeline 1 on the basis of specific embodiment 1
Pipeline 1 includes sequentially connected nitrogen tube linkage section 11, middle section 12 and blow valve port linkage section 13, nitrogen from inlet end to outlet side
The middle part at the middle part of pipe linkage section 11, the middle part in middle section 12 and blow valve port linkage section 13 is equipped with bellows section 14.
Purging pipeline includes nitrogen tube linkage section, middle section and blow valve port linkage section, by bellows section can to linkage section,
The length of middle section and blow valve port linkage section is adjusted, and purging pipeline is made to can be suitably used for the liquid nitrogen pump of various models.
Specific embodiment 3:
The present embodiment be on the basis of specific embodiment 1 to blow valve port 2 and purging pipeline 1 connection type carried out into
The surrounding of the explanation of one step, the blow valve port 2 is equipped with link slot 4 around blow valve port, and notch and the purging pipeline 1 of link slot 4 go out
The pipeline opening at gas end is adapted to, and the outlet side of purging pipeline 1 is additionally provided with the connection sheet 5 around purging pipeline setting, and connection sheet 5 is arranged
Position and the distance between the pipeline opening of purging 1 outlet side of pipeline be equal to the depth of link slot 4, the middle part of connection sheet 5 is equipped with
Connection sheet screw hole is equipped with pump head screw hole at the pump head of liquid nitrogen pump position corresponding with connection sheet screw hole, purges pipeline 1 and blow valve port
2 are fastenedly connected by being plugged in the bolt 6 at connection sheet screw hole and pump head screw hole.
When installation purging pipeline, the outlet side for purging pipeline is inserted into link slot, after insertion, the bottom of connection sheet and liquid
The surface of nitrogen pump contacts and is bonded, and makes connection sheet screw hole and pump head screw hole face, and bolt is then screwed into connection sheet screw hole and pump
Head screw hole, completes the installation of purging pipeline after tightening, be arranged such mounting structure be in order to be more convenient for purge pipeline into
Row installation and replacement, pipeline will be purged using the mode of welding by, which avoiding, is connected on blow valve port, setting link slot be in order to
Make to purge the better tightness between pipeline and blow valve port.
Specific embodiment 4:
The present embodiment is to have carried out further instruction, the link slot to link slot 4 on the basis of specific embodiment 3
The two sides of 4 bottoms are equipped with sealing ladder 7, and the direction that sealing ladder 7 climbs from the bottom up is the connection that crawls toward from the center of link slot 4
The cell wall of slot 4, the bottom for purging the pipeline opening of 1 outlet side of pipeline are equipped with the pipeline opening ladder agreed with sealing ladder 7.
In connection trench bottom setting sealing ladder, and it is arranged and seals in the bottom of the pipeline opening of scavenging conduit road outlet side
The pipeline opening ladder that ladder agrees with, after being purged in pipeline insertion link slot in this way, pipeline opening ladder is closely pasted with sealing ladder
It closes, so that the leakproofness of purging pipeline further increases, reduces the loss of helium leak.
Specific embodiment 5:
The present embodiment is to have carried out further instruction, the connection sheet to connection sheet 5 on the basis of specific embodiment 3
5 bottom is in dentation, and the bottom at position and connection sheet that the pump head of liquid nitrogen pump is contacted with connection sheet 5 is agreed with.
The leakproofness that the structure is connect also for raising purging pipeline with liquid nitrogen pump.
Specific embodiment 6:
The present embodiment is to have carried out further instruction to valve 3 on the basis of specific embodiment 1, and the valve 3 is
Needle valve.
Pump head institute air demand is controlled to adjust by needle valve, oozes out gas slightly from piston rod.
Although reference be made herein to the utility model is described in multiple explanatory embodiments of the utility model, still,
It should be understood that those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations
It will fall within scope and spirit disclosed in the present application.More specifically, it discloses in the application, drawings and claims
In range, can building block to theme combination layout and/or layout carry out a variety of variations and modifications.In addition to building block
And/or outside the modification and improvement of layout progress, to those skilled in the art, other purposes also be will be apparent.
Claims (6)
1. a kind of liquid nitrogen pump purge gass system, including purging pipeline (1), it is characterised in that: the inlet end of purging pipeline (1)
Be connected with the low pressure nitrogen tracheae by liquid nitrogen pump, purge the outlet side of pipeline (1) then with the blow valve port (2) that is arranged at the top of liquid nitrogen pump
It is connected, blow valve port (2) is located at the pump head that liquid nitrogen pump is connect with ice chest, and the outlet side of purging pipeline (1) is equipped with valve (3).
2. liquid nitrogen pump purge gass system according to claim 1, it is characterised in that: the purging pipeline (1) is from inlet end
It include sequentially connected nitrogen tube linkage section (11), middle section (12) and blow valve port linkage section (13), nitrogen tube connection to outlet side
Bellows section (14) are equipped in the middle part of the middle part of section (11), the middle part of middle section (12) and blow valve port linkage section (13).
3. liquid nitrogen pump purge gass system according to claim 1, it is characterised in that: the surrounding of the blow valve port (2) is surround
Blow valve port is equipped with link slot (4), and the notch of link slot (4) is adapted to the pipeline opening of purging pipeline (1) outlet side, purges pipeline
(1) outlet side is additionally provided with the connection sheet (5) around purging pipeline setting, the position of connection sheet (5) setting and purging pipeline (1)
The distance between pipeline opening of outlet side is equal to the depth of link slot (4), and the middle part of connection sheet (5) is equipped with connection sheet screw hole, liquid
Pump head screw hole is equipped at the pump head position corresponding with connection sheet screw hole of nitrogen pump, purging pipeline (1) is with blow valve port (2) by plugging
Bolt (6) at connection sheet screw hole and pump head screw hole is fastenedly connected.
4. liquid nitrogen pump purge gass system according to claim 3, it is characterised in that: the two sides of link slot (4) bottom
Equipped with sealing ladder (7), the direction that sealing ladder (7) is climbed from the bottom up is to crawl toward link slot (4) from the center of link slot (4)
Cell wall, the bottom for purging the pipeline opening of pipeline (1) outlet side is equipped with and sealing ladder (7) the pipeline opening ladder that agrees with.
5. liquid nitrogen pump purge gass system according to claim 3, it is characterised in that: the bottom of the connection sheet (5) is in tooth
Agree with the bottom of shape, position and connection sheet that the pump head of liquid nitrogen pump is contacted with connection sheet (5).
6. liquid nitrogen pump purge gass system according to claim 1, it is characterised in that: the valve (3) is needle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820942753.8U CN208330702U (en) | 2018-06-19 | 2018-06-19 | Liquid nitrogen pump purge gass system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820942753.8U CN208330702U (en) | 2018-06-19 | 2018-06-19 | Liquid nitrogen pump purge gass system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208330702U true CN208330702U (en) | 2019-01-04 |
Family
ID=64771860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820942753.8U Active CN208330702U (en) | 2018-06-19 | 2018-06-19 | Liquid nitrogen pump purge gass system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208330702U (en) |
-
2018
- 2018-06-19 CN CN201820942753.8U patent/CN208330702U/en active Active
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