CN111998071B

CN111998071B - Ultrahigh pressure sealing assembly

Info

Publication number: CN111998071B
Application number: CN202010694216.8A
Authority: CN
Inventors: 卞超群; 徐凯松; 贾义政; 范昊栋; 王亚龙; 刘志超
Original assignee: Wuhu Tianhang Equipment Technology Co ltd
Current assignee: Wuhu Tianhang Equipment Technology Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2022-04-22
Anticipated expiration: 2040-07-17
Also published as: CN111998071A

Abstract

The invention relates to an ultrahigh pressure sealing assembly which comprises a sealing shell with a test chamber, wherein a first sealing hole, a second sealing hole, a third sealing hole and a test hole which are communicated with the test chamber are correspondingly arranged on the sealing shell, a first sealing assembly is arranged in the first sealing hole, a second sealing assembly is arranged in the second sealing hole, an expansion plug assembly is arranged in the third sealing hole, and a third sealing assembly connected with test equipment is arranged in the test hole. Compared with the prior art, the sealing shell is sealed by a special sealing method through the arrangement of the first threaded plug, the sealing groove, the conical sealing plug, the second threaded plug, the expansion spring, the first expansion plug, the second expansion plug, the steel gasket, the first pipe joint, the second pipe joint, the first adapter, the second adapter and the sealing joint, and the bottleneck that a test cannot be smoothly carried out is overcome by adding a special sealing mode.

Description

Ultrahigh pressure sealing assembly

Technical Field

The invention relates to the technical field of airplane bullet chamber sealing pressure tests, in particular to an ultrahigh pressure sealing assembly.

Background

The bullet chamber of a certain type of airplane suspension device has serious corrosion after being used, and a strength test of 180 +/-10 MPa is required after being repaired. Because of there are many through-holes in the bullet room, the casing can't be sealed to conventional sealing method, leads to the experiment to go on smoothly.

Disclosure of Invention

In order to solve the technical problem, the invention provides an ultrahigh pressure sealing assembly.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides an ultrahigh pressure seal assembly, is including the sealed casing that has experimental cavity, correspond on the sealed casing and be equipped with first sealed hole, second sealed hole, third sealed hole and the test hole with experimental cavity intercommunication, wherein, be equipped with a seal assembly in the first sealed hole, be equipped with No. two seal assembly in the second sealed hole, be equipped with the inflation stopper subassembly in the third sealed hole, be equipped with No. three seal assembly who is connected with test equipment in the test hole.

Further, the first sealing assembly comprises a first threaded plug in threaded sealing fit with the first sealing hole.

Further, the second sealing assembly comprises a conical sealing plug which is in sealing fit with the second sealing hole.

Further, the expansion plug component comprises a second threaded plug, an expansion spring, a first expansion plug, a second expansion plug and a steel gasket which are sequentially plugged in a third sealing hole and connected with each other, wherein the second threaded plug is provided with a sealing ring, and the second threaded plug and the steel gasket are respectively plugged at the upper end part and the lower end part of the third sealing hole.

Further, the wedge-shaped surface between first inflation jam and the second inflation jam is connected in the laminating, the wedge-shaped surface cooperation angle between first inflation jam and the second inflation jam is 8.

Further, No. three seal assembly is including a coupling, No. two couplings, an adapter, No. two adapters, the sealing joint who connects gradually, the overhead tip department of just being connected with the test hole of sealing joint is equipped with the combination sealing washer of constituteing by sealed inner circle, sealed outer lane.

Further, the inside axis of an adapter, No. two adapters, sealing joint all is equipped with the same capillary oilhole that is used for test equipment to annotate hydraulic oil in order to carry out the experiment to sealed casing of diameter.

The invention has the beneficial effects that:

compared with the prior art, the sealing shell is sealed by a special sealing method through the arrangement of the first threaded plug, the sealing groove, the conical sealing plug, the second threaded plug, the expansion spring, the first expansion plug, the second expansion plug, the steel gasket, the first pipe joint, the second pipe joint, the first adapter, the second adapter and the sealing joint, and the bottleneck that a test cannot be smoothly carried out is overcome by adding a special sealing mode.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic view of the overall structure of a sealed housing according to the present invention;

FIG. 2 is a rear side schematic view of the seal housing of the present invention;

FIG. 3 is a schematic structural view of a first seal assembly of the present invention;

FIG. 4 is a schematic structural view of a second seal assembly of the present invention;

FIG. 5 is a schematic view of the construction of the expansion plug assembly of the present invention;

FIG. 6 is a schematic structural view of a third seal assembly of the present invention;

fig. 7 is a schematic structural view of the sealing joint of the present invention.

In the figure: 1. sealing the housing; 2. a first seal bore; 3. a second sealing aperture; 4. a third sealing aperture; 5. a test well; 6. a capillary oil hole; 7. a first thread plug; 71. a sealing groove; 8. a conical sealing plug; 9. a second thread plug; 10. an expansion spring; 11. a first dilation plug; 12. a second dilation plug; 13. a steel pad; 14. a first pipe joint; 15. a second pipe joint; 16. a first adapter; 17. a second adapter; 18. sealing the joint; 19. sealing the inner ring; 20. and sealing the outer ring.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained in the following with the accompanying drawings and the embodiments.

As shown in fig. 1 to 7, an ultrahigh pressure seal assembly includes a seal housing 1 with a test chamber, the seal housing 1 is correspondingly provided with a first seal hole 2, a second seal hole 3, a third seal hole 4 and a test hole 5 which are communicated with the test chamber, wherein the first seal hole 2 is provided with a first seal assembly, the second seal hole 3 is provided with a second seal assembly, the third seal hole 4 is provided with an expansion plug assembly, and the test hole 5 is provided with a third seal assembly connected with a test device.

As a further improvement of the invention, the sealing shell 1 is of a T-shaped structure, and the first sealing holes 2 are vertically distributed at the upper end part of the sealing shell 1 and close to the intersection of the transverse direction and the longitudinal direction. The second sealing hole 3 is formed in a side wall of the rear side of the sealing case 1. The third sealing holes 4 are provided with two T-shaped ends which are symmetrically and vertically distributed on the sealing shell 1 and extend outwards. The test holes 5 are provided in the side wall of the front side of the sealed housing 1.

As a further improvement of the present invention, the first sealing assembly includes a first threaded plug 7 in threaded sealing fit with the first sealing hole 2, a sealing groove 71 is disposed between a threaded portion and a cap portion of the first threaded plug 7, and when in use, a sealing ring is installed in the sealing groove 71 to further enhance the sealing effect of the first sealing assembly on the first sealing hole 2.

As a further improvement of the invention, the second sealing assembly comprises a conical sealing plug 8 which is in sealing fit with the second sealing hole 3, the conical sealing plug 8 is made of nylon, and when in use, the conical sealing plug 8 is tightly sealed and abutted in the second sealing hole 3 through an external cylindrical abutting piece.

As a further improvement of the invention, the expansion plug assembly comprises a second threaded plug 9 with a sealing ring, an expansion spring 10, a first expansion plug 11, a second expansion plug 12 and a steel gasket 13 which are sequentially plugged in the third sealing hole 4 and connected with each other, wherein the second threaded plug 9 and the steel gasket 13 are respectively plugged at the upper end part and the lower end part of the third sealing hole 4 in a sealing manner.

The second threaded plug 9 and the first threaded plug 7 are identical in structure, a sealing groove is also formed between the threaded portion and the plug cover portion, and a sealing ring is also arranged in the sealing groove. First inflation is blockked up 11 and is blockked up 12 between wedge face laminating connection, wherein, first inflation is blockked up 11 and is the wedge convex surface, second inflation is blockked up 12 and is the wedge concave surface, through a large amount of pressure test, obtains the conclusion, works as first inflation is blockked up 11 and second inflation and is blockked up when 12 between wedge face cooperation angle is 8, first inflation is blockked up that the cooperation effect is better and sealed effect is better between 11 and the second inflation is blockked up 12. The first expansion plug 11 is made of 45# steel, and the second expansion plug 12 is made of nylon.

After the expansion plug assembly is inserted into the third sealing hole 4, the second threaded plug 9 seals the upper end of the third sealing hole 4 and applies downward pressure to the expansion spring 10, the expansion spring 10 applies pressure to the first expansion plug 11 and the second expansion plug 12, and the first expansion plug 11 and the second expansion plug 12 expand to seal the lower end of the third sealing hole 4.

As a further improvement of the invention, the third sealing assembly comprises a first pipe joint 14, a second pipe joint 15, a first adapter 16, a second adapter 17 and a sealing joint 18 which are sequentially connected, and a combined sealing ring consisting of a sealing inner ring 19 and a sealing outer ring 20 is arranged on the end part of the sealing joint 18 connected with the test hole 5.

And the first pipe joint 14, the second pipe joint 15, the first adapter 16, the second adapter 17 and the sealing joint 18 are in threaded connection. The inside axis of a adapter 16, No. two adapters 17, sealing joint 18 all is equipped with the same capillary oilhole 6 that is used for the test equipment to annotate hydraulic oil in order to test to seal housing 1 diameter. The capillary oil hole 6 is used for protecting the test precision of the test equipment and preventing the impact of liquid vibration on the test equipment when ultrahigh pressure is lost pressure instantly possibly in the test process.

During the use, seal the sealed hole on the sealed casing 1 according to the order in proper order, wherein, first sealed hole 2: firstly, the sealing ring is sleeved in the sealing groove 71, and then the first threaded plug 7 is screwed into the first sealing hole 2 to complete the sealing of the first sealing hole 2.

Second seal hole 3: and the conical sealing plug 8 is plugged into the second sealing hole 3 and is abutted by a cylindrical pin, and during testing, a threaded abutting head for abutting against the cylindrical pin is arranged on the testing equipment.

Third seal hole 4: the steel gasket 13, the matched first expansion plug 11, the matched second expansion plug 12 and the expansion spring 10 are sequentially arranged in the two third sealing holes 4, then the second threaded plug 9 is screwed into the third sealing holes 4 in a manner of sealing the first sealing hole 2, and the upper end part and the lower end part of each third sealing hole 4 are sealed through the expansion spring 10.

Test well 5: and screwing one end of the sealing joint 18 with the combined sealing ring into the test hole 5 to complete the sealing of the test hole 5.

Then, the sealed housing 1 sealed by the sealing assembly can be placed into a testing device for pressure sealing test.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An ultra-high pressure seal assembly characterized by: the device comprises a sealing shell (1) with a test chamber, wherein a first sealing hole (2), a second sealing hole (3), a third sealing hole (4) and a test hole (5) which are communicated with the test chamber are correspondingly arranged on the sealing shell (1), a first sealing assembly is arranged in the first sealing hole (2), a second sealing assembly is arranged in the second sealing hole (3), an expansion plug assembly is arranged in the third sealing hole (4), and a third sealing assembly connected with test equipment is arranged in the test hole (5);

the expansion plug assembly comprises a second threaded plug (9) with a sealing ring, an expansion spring (10), a first expansion plug (11), a second expansion plug (12) and a steel gasket (13), which are sequentially plugged in a third sealing hole (4) and connected with each other, wherein the second threaded plug (9) and the steel gasket (13) are respectively plugged at the upper end part and the lower end part of the third sealing hole (4) in a sealing manner;

the wedge-shaped surface between first inflation jam (11) and second inflation jam (12) is connected in the laminating, wedge-shaped surface cooperation angle between first inflation jam (11) and second inflation jam (12) is 8.

2. An ultra-high pressure seal assembly according to claim 1, wherein: the first sealing assembly comprises a first threaded plug (7) in threaded sealing fit with the first sealing hole (2).

3. An ultra-high pressure seal assembly according to claim 1, wherein: the second sealing assembly comprises a conical sealing plug (8) which is in sealing fit with the second sealing hole (3).

4. An ultra-high pressure seal assembly according to claim 1, wherein: no. three seal assembly is including a coupling (14), No. two couplings (15), adapter (16), No. two adapters (17), sealing joint (18) that connect gradually, the tip department that just is connected with test hole (5) on sealing joint (18) is equipped with the combination sealing washer of constituteing by sealed inner circle (19), sealed outer lane (20).

5. An ultra-high pressure seal assembly according to claim 4, wherein: the inside axis of a adapter (16), No. two adapters (17), sealing joint (18) all is equipped with the same capillary oilhole (21) that is used for the test equipment of diameter to annotate hydraulic oil in order to test sealed housing (1).