CN203849113U - Simple low-pressure single tube pressure test tool - Google Patents
Simple low-pressure single tube pressure test tool Download PDFInfo
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- CN203849113U CN203849113U CN201420272826.9U CN201420272826U CN203849113U CN 203849113 U CN203849113 U CN 203849113U CN 201420272826 U CN201420272826 U CN 201420272826U CN 203849113 U CN203849113 U CN 203849113U
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- tubular body
- inside recess
- stepped hole
- apical grafting
- test tube
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Abstract
The utility model discloses a simple low-pressure single tube pressure test tool which comprises a water pump and a pressure gage, and is characterized in that two sealing pairs consisting of inside recesses and top sleeves are arranged; each inside recess is in a combined shape formed by connecting a stepped shaft sleeve and a flange plate; a taper angle of 20 degrees is formed at the circular ring bottom of an inner circle stepped hole; each top sleeve is formed by connecting a middle outer circle of a tubular body and a flange plate; the outer diameter of the tubular body is smaller than the inner diameter of a large-diameter hole of the stepped hole of the inside recess; the inner diameter of the tubular body is larger than the outer diameter of a tube to be tested; a lead angle of 20 degrees is formed in one hole of the tubular body; a tubular body of the right top sleeve is connected with the water pump; the pressure gage is fixed on the tubular body of the right top sleeve; a tubular body of the left top sleeve is connected with a drainage valve; O-shaped sealing rings are respectively mounted on the stepped hole circular ring bottoms of the right inside recess and the left inside recess, and then the right inside recess and the left inside recess sleeve two ends of the tube to be tested in opposite directions, the two top sleeves respectively sleeve the two ends of the tube to be tested by tightly attaching to the sealing rings, and the flange plates of the sealing pairs are fixedly screwed. The pressure test tool is simple, convenient and low in cost.
Description
technical field:
The utility model relates to pressure measurement equipment, particularly a kind of plain type low pressure single tube structure for pressure test.
background technology:
In Ammonia Production device, there are a lot of tubulation heat transmission equipments, are mainly distributed in operation after desulfurization process, decarbonization process, compression section, synthesis procedure, methyl alcohol operation, urea.I am home-built equipment by company's one, two class pressure vessels, and the working pressure of home-built equipment is generally not more than 3MPa.The specification of heat exchanger tube is generally DN15-DN45, and material is divided into carbon steel and stainless steel according to dielectric corrosion degree.
My company's decarbonization process reboiler heat interchanging area is 457m
2, heat exchanger tube specification is 25 × 2.5, material is No. 20 steel, and equipment uses to be found to leak after half a year serious, confirms on inspection, and between its upper side liquid phase, be with tubulation to have macro-corrosion perforation, all the other positions are intact.Trace it to its cause, water flowing in this vertical array tubular heat exchanger tube, circulation decarbonizing liquid in the case shell outside tubulation, owing to being dissolved with CO in decarbonizing liquid
2gas, the CO in case
2gas evolution bubbling, and in tubulation outer wall top, so tubulation epimere seriously corroded.
As again made whole equipment, need with the high stainless steel heat exchange tube of expense; As heat exchanger tube adopts two kinds of materials, wherein between liquid phase, more than band adopting stainless steel, liquid phase band adopts carbon steel pipe, avoids corrosion area, and two sections of unlike material pipe docking welding, change corrosion pipe, and expense is low.Butt tube must be verified the welding quality of single pipe, because my company is amateur device fabrication unit, without the special pressure testing device of single pipe.
summary of the invention:
The purpose of this utility model is to overcome above-mentioned defect, and a kind of plain type low pressure single tube structure for pressure test is provided.
Scheme of the present utility model is: comprise water pump, tensimeter, it is characterized in that: be provided with two pairs and overlap by inside recess, apical grafting the sealing pair forming, inside recess is a step axle sleeve and a ring flange connected combination shape, at the bottom of its inner circle stepped hole annulus, be provided with 20 degree cone angles, the diameter holes internal diameter of stepped hole is greater than treats test tube external diameter; Apical grafting cover is ring flange of a tubular body middle part cylindrical disjunctor, and tubular body external diameter is less than hole, the large footpath of inside recess stepped hole internal diameter, and tubular body internal diameter is greater than treats test tube external diameter, and tubular body one port is provided with 20 degree lead angles; A connecting pipe of tubular body right output port welding of right apical grafting cover, connecting pipe another port external thread screws up in the internal thread of water pump osculum, on the tubular body of right apical grafting cover, also fix a tensimeter, the tubular body left port of left apical grafting cover is fixed by socket a draining valve; On at the bottom of the stepped hole annulus of right inside dimple, left inside dimple, lay respectively after an O-ring seals, oppositely be inserted in each other respectively and treat test tube two terminations again, make ring flange outer face and treat that test tube outer face is concordant, again two apical grafting covers are inserted in respectively after test tube two crowns are attached to inside recess stepped hole inner seal ring with the end of chamfering, two ring flanges of each sealing pair are tightened fixing with bolt and nut.
The utility model has the advantage of: treat that test tube is used the pressure testing of this frock, simple and convenient, cost is low.
brief description of the drawings:
Accompanying drawing is the utility model structural representation.
embodiment:
The utility model comprises water pump, tensimeter 7, it is characterized in that: be provided with two pairs and overlap by inside recess, apical grafting the sealing pair forming, inside recess is a step axle sleeve and a ring flange connected combination shape, at the bottom of its inner circle stepped hole annulus, be provided with 20 degree cone angles, the diameter holes internal diameter of stepped hole is greater than treats test tube 4 external diameters; Apical grafting cover is ring flange of a tubular body middle part cylindrical disjunctor, and tubular body external diameter is less than hole, the large footpath of inside recess stepped hole internal diameter, and tubular body internal diameter is greater than treats test tube 4 external diameters, and tubular body one port is provided with 20 degree lead angles; A connecting pipe 8 of tubular body right output port welding of right apical grafting cover 6, connecting pipe 8 another port external threads screw up in the internal thread of water pump osculum, on the tubular body of right apical grafting cover 6, also fix a tensimeter, the tubular body left port of left apical grafting cover 2 is fixed by socket a draining valve 1; On at the bottom of the stepped hole annulus of right inside dimple 5, left inside dimple 3, lay respectively after an O-ring seals, oppositely be inserted in each other respectively and treat test tube 4 two terminations again, make ring flange outer face and treat that test tube 4 outer faces are concordant, again two apical grafting covers are inserted in respectively after test tube 4 two crowns are attached to inside recess stepped hole inner seal ring with the end of chamfering, two ring flanges of each sealing pair are tightened fixing with bolt and nut.
After test tube 4 two ends socket sealing pairs, by the seal of tube to be measured, the water filling that switches on the pump pressurization can demonstrate pressure size from tensimeter.Owing to being mainly that test tube is treated in low pressure detection, whether the butt-weld of two kinds of material pipes can reach low pressure request, so frock is simple and convenient, loads and unloads also quick.
Claims (1)
1. a plain type low pressure single tube structure for pressure test, comprise water pump, tensimeter (7), it is characterized in that: be provided with two pairs and overlap by inside recess, apical grafting the sealing pair forming, inside recess is a step axle sleeve and a ring flange connected combination shape, at the bottom of its inner circle stepped hole annulus, be provided with 20 degree cone angles, the diameter holes internal diameter of stepped hole is greater than treats test tube (4) external diameter; Apical grafting cover is ring flange of a tubular body middle part cylindrical disjunctor, and tubular body external diameter is less than hole, the large footpath of inside recess stepped hole internal diameter, and tubular body internal diameter is greater than treats test tube (4) external diameter, and tubular body one port is provided with 20 degree lead angles; A tubular body right output port connecting pipe of welding (8) of right apical grafting cover (6), connecting pipe (8) another port external thread screws up in the internal thread of water pump osculum, on the tubular body of right apical grafting cover (6), also fix a tensimeter, the tubular body left port of left apical grafting cover (2) is fixed by socket a draining valve (1); On at the bottom of the stepped hole annulus of right inside dimple (5), left inside dimple (3), lay respectively after an O-ring seals, oppositely be inserted in each other respectively again and treat test tube (4) two terminations, make ring flange outer face and treat that test tube (4) outer face is concordant, again two apical grafting covers are inserted in respectively until test tube (4) two crowns and are attached to after inside recess stepped hole inner seal ring with the end of chamfering, two ring flanges of each sealing pair are tightened fixing with bolt and nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272826.9U CN203849113U (en) | 2014-05-24 | 2014-05-24 | Simple low-pressure single tube pressure test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272826.9U CN203849113U (en) | 2014-05-24 | 2014-05-24 | Simple low-pressure single tube pressure test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203849113U true CN203849113U (en) | 2014-09-24 |
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ID=51562116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420272826.9U Active CN203849113U (en) | 2014-05-24 | 2014-05-24 | Simple low-pressure single tube pressure test tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN203849113U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593447A (en) * | 2018-04-20 | 2018-09-28 | 中国石油集团渤海石油装备制造有限公司 | Internal lining pipe water test unit and test method |
-
2014
- 2014-05-24 CN CN201420272826.9U patent/CN203849113U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593447A (en) * | 2018-04-20 | 2018-09-28 | 中国石油集团渤海石油装备制造有限公司 | Internal lining pipe water test unit and test method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |