CN204330229U - Pressure test pipeline transfer tube - Google Patents
Pressure test pipeline transfer tube Download PDFInfo
- Publication number
- CN204330229U CN204330229U CN201520006013.XU CN201520006013U CN204330229U CN 204330229 U CN204330229 U CN 204330229U CN 201520006013 U CN201520006013 U CN 201520006013U CN 204330229 U CN204330229 U CN 204330229U
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- air path
- path elements
- cap nut
- pressure inlet
- joint
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Abstract
Pressure test pipeline transfer tube, belongs to pipe joint, and the billiard table solving existing pipeline adapter contacts with taper surface, on finished product pressure inlet, easily leaves impression, causes the problem of air path elements pressure inlet sealing face damage.The utility model is made up of joint, cap nut and O-ring seals, and joint is tubular rotary body, and being connected as a single entity by upper cylinder, annular boss and lower cylinder successively is from top to bottom formed, and lower cylindrical sleeve has O-ring seals; During use, the internal thread of cap nut and the external thread of air path elements pressure inlet are threaded connection, and realize sealing by the taper surface being enclosed within the O-ring seals of cylinder under joint and being pressed in air path elements pressure inlet.The taper surface of O-ring seals of the present utility model and air path elements pressure inlet forms nonmetal soft sealing structure, damage can not be caused to air path elements interface during test, and pretightning force is little, rapid operation, is applicable to the sealing of air path elements shaped Nozzles mouth interface in product pressure test.
Description
Technical field
The utility model belongs to pipe joint, is specifically related to a kind of pressure test pipeline transfer tube, for the pressure test of product.
Background technology
Air path elements mainly contains gas cylinder, conduit, various valve (stop valve, throttling valve, safety valve, reduction valve etc.), tensimeter and end function element (cylinder, jet pipe etc.), need to carry out tightness test, various function test after air path elements assembling, during test, employing technique transfer tube, pipeline adapter are connected with air path elements pressure inlet, and the gas being then filled with authorised pressure is tested.
The pressure inlet of some air path elements has cone-shaped inner hole, and the pipeline transfer tube carrying out being connected with it comprises joint 10 and cap nut 20, as shown in Figure 1; As shown in Figure 2, joint is the tubular rotary body with axial central through hole, and being connected as a single entity by upper cylinder 11, annular boss 12, lower cylinder 13 and billiard table 14 successively is from top to bottom formed; As shown in Fig. 3 (A), Fig. 3 (B), cap nut 20 is tubular rotary body, and its end face has center pit 21, and its internal diameter is greater than described upper cylinder 11 external diameter but is less than described annular boss 12 external diameter; Cap nut 20 inwall has internal thread 22, to coordinate with the external thread of air path elements pressure inlet; During use, the upper cylinder 11 of joint 10 passes from cap nut 20 center pit 21, the internal thread 22 of cap nut 20 is threaded connection with the external thread of air path elements pressure inlet, is pressed on the taper surface of air path elements pressure inlet by the billiard table 14 of joint 10, realizes sealing.
Because billiard table contacts as metal hard sealing structure with taper surface, generally impression can be left on finished product pressure inlet after test, and because test transfer tube is Reusability product, the billiard table sealing surface smooth finish of its pipeline adapter center tap is generally poor, airtight for ensureing connection at the trial, operator ensures airtight often through increasing screwing force, so more easily causes air path elements pressure inlet sealing face damage.
Summary of the invention
The utility model provides a kind of pressure test pipeline transfer tube, and the billiard table solving existing pipeline adapter contacts with taper surface, on finished product pressure inlet, easily leaves impression, causes the problem of air path elements pressure inlet sealing face damage.
A kind of pressure test pipeline transfer tube provided by the utility model, is made up of joint, cap nut and O-ring seals, it is characterized in that:
Described joint is the tubular rotary body with axial central through hole, and being connected as a single entity by upper cylinder, annular boss and lower cylinder successively is from top to bottom formed, and described lower cylindrical sleeve has O-ring seals;
Described cap nut is tubular rotary body, and its end face has center pit, and its internal diameter is greater than described upper outside diameter of cylinder but is less than described annular boss external diameter; Cap nut inwall has internal thread, to coordinate with the external thread of air path elements pressure inlet; Cap nut surface has six terrace with edges, uses to coordinate spanner;
During use, the upper cylinder of described joint passes from cap nut center pit, the internal thread of cap nut and the external thread of air path elements pressure inlet are threaded connection, and being pressed on the taper surface of air path elements pressure inlet, realizing sealing by being enclosed within the O-ring seals of cylinder under joint.
The taper surface of O-ring seals of the present utility model and air path elements pressure inlet forms nonmetal soft sealing structure, O-ring seals material hardness is low, good springiness, damage can not be caused to air path elements interface during test, and pretightning force is little, rapid operation, little to the damage of air path elements interface thread, be applicable to the sealing of air path elements shaped Nozzles mouth interface.
Service condition of the present utility model:
A. nominal pressure: be not more than 30MPa;
B. medium temperature :-45 DEG C ~+100 DEG C;
C. actuating medium: air, HY-8, YH-10.
Accompanying drawing explanation
Fig. 1 is existing pipeline transfer tube schematic diagram;
Fig. 2 is existing joint schematic diagram;
Fig. 3 (A) is cap nut schematic diagram;
The vertical view that Fig. 3 (B) is Fig. 3 (A);
Fig. 4 is the utility model structural representation;
Fig. 5 is the joint schematic diagram of utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 4, the utility model is made up of joint 10, cap nut 20 and O-ring seals 30;
As shown in Figure 5, described joint 10, for having the tubular rotary body of axial central through hole, is connected as a single entity by upper cylinder 11, annular boss 12 and lower cylinder 13 successively from top to bottom and forms, and described lower cylinder 13 cover has O-ring seals 30;
As shown in Fig. 3 (A), Fig. 3 (B), described cap nut 20 is tubular rotary body, and its end face has center pit 21, and its internal diameter is greater than described upper cylinder 11 external diameter but is less than described annular boss 12 external diameter; Cap nut 20 inwall has internal thread 22, to coordinate with the external thread of air path elements pressure inlet; Cap nut 20 surface has six terrace with edges 23, uses to coordinate spanner;
During use, the upper cylinder 11 of described joint 10 passes from cap nut 20 center pit 21, the internal thread 22 of cap nut 20 is threaded connection with the external thread of air path elements pressure inlet, the O-ring seals 30 being enclosed within joint 10 times cylinders 13 is pressed on the taper surface of air path elements pressure inlet, realizes sealing.
In embodiment of the present utility model, joint and cap nut adopt 1Cr18Ni9Ti steel to do, and are quenched to austenite; Also aluminium alloy can be adopted to make.O-ring seals is rubber ring, meets GB GB/T3452.1-1992 requirement.
Claims (1)
1. a pressure test pipeline transfer tube, is made up of joint (10), cap nut (20) and O-ring seals (30), it is characterized in that:
Described joint (10) is for having the tubular rotary body of axial central through hole, be connected as a single entity by upper cylinder (11), annular boss (12) and lower cylinder (13) successively from top to bottom and form, described lower cylinder (13) cover has O-ring seals (30);
Described cap nut (20) is tubular rotary body, and its end face has center pit (21), and its internal diameter is greater than described upper cylinder (11) external diameter but is less than described annular boss (12) external diameter; Cap nut (20) inwall has internal thread (22), to coordinate with the external thread of air path elements pressure inlet; Cap nut (20) surface has six terrace with edges (23), uses to coordinate spanner;
During use, the upper cylinder (11) of described joint (10) passes from cap nut (20) center pit (21), the internal thread (22) of cap nut (20) and the external thread of air path elements pressure inlet are threaded connection, being pressed on the taper surface of air path elements pressure inlet by being enclosed within the O-ring seals (30) of cylinder (13) under joint (10), realizing sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520006013.XU CN204330229U (en) | 2015-01-06 | 2015-01-06 | Pressure test pipeline transfer tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520006013.XU CN204330229U (en) | 2015-01-06 | 2015-01-06 | Pressure test pipeline transfer tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204330229U true CN204330229U (en) | 2015-05-13 |
Family
ID=53166579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520006013.XU Active CN204330229U (en) | 2015-01-06 | 2015-01-06 | Pressure test pipeline transfer tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204330229U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141752A (en) * | 2018-07-04 | 2019-01-04 | 西安航天发动机有限公司 | It is a kind of for protecting surface treatment late gate to connect the air seal test attachment device of mouth |
| CN112730075A (en) * | 2020-12-17 | 2021-04-30 | 中国航空综合技术研究所 | Pressure testing device and method for aviation pipeline connecting piece system |
| CN113252339A (en) * | 2021-06-11 | 2021-08-13 | 四川航天长征装备制造有限公司 | Damping type mechanical simulation steering engine |
-
2015
- 2015-01-06 CN CN201520006013.XU patent/CN204330229U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141752A (en) * | 2018-07-04 | 2019-01-04 | 西安航天发动机有限公司 | It is a kind of for protecting surface treatment late gate to connect the air seal test attachment device of mouth |
| CN112730075A (en) * | 2020-12-17 | 2021-04-30 | 中国航空综合技术研究所 | Pressure testing device and method for aviation pipeline connecting piece system |
| CN113252339A (en) * | 2021-06-11 | 2021-08-13 | 四川航天长征装备制造有限公司 | Damping type mechanical simulation steering engine |
| CN113252339B (en) * | 2021-06-11 | 2021-10-01 | 四川航天长征装备制造有限公司 | Damping type mechanical simulation steering engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |