CN115638310A - Thruster throat plugging device - Google Patents
Thruster throat plugging device Download PDFInfo
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- CN115638310A CN115638310A CN202211258315.7A CN202211258315A CN115638310A CN 115638310 A CN115638310 A CN 115638310A CN 202211258315 A CN202211258315 A CN 202211258315A CN 115638310 A CN115638310 A CN 115638310A
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- plug
- sealing
- push rod
- throat
- thruster
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Abstract
The invention discloses a thrustor throat plugging device, wherein one end of a push rod is connected with a handle, the other end of the push rod is connected with a plug seat, a sealing plug for plugging is arranged on the plug seat, and the sealing plug is contacted with a throat of a spray pipe to form a sealing strip. The invention has the advantages that: the thruster throat plugging device can realize one-time clamping of the product nozzle, ensures the sealing quality of the product in the inner hole of the nozzle and simplifies the test preparation flow. Compared with the mode of using the end face to press and seal, the clamping process is convenient, the installation skill is reduced, and the one-time qualification rate of products is greatly improved. The installation method is simple to operate and easy to realize, and the test efficiency is improved. The sealing test device provides great convenience for the sealing test of the thin-wall product of the thruster, and lays a foundation for the subsequent clamping test of the product.
Description
Technical Field
The invention relates to a sealing device, in particular to a plugging device for sealing the throat of a thruster.
Background
The thrust device nozzle is in a conical curved surface structure due to functional factors, the inner cavity of the nozzle is provided with an inner diameter, so that compression energy can be sprayed out from the inner diameter to realize a boosting function, and the product needs to reduce weight, so that the design structure is in a thin-wall form. How shutoff thin wall structure becomes a difficult problem in carrying out the performance test in-process, need carry out the leakproofness inspection to connection structure after the assembly is accomplished, need block up the spray tube this moment, owing to its structural feature, hardly realize, how carry out the dress card of product spray tube, both guarantee product spray tube sealing quality, will not harm the quick effectual dismantlement of realization under the product condition again, through dress card mode and anchor clamps design improvement product test reliability.
Application number is 2021218034493, the utility model discloses a sealed leak hunting device of rocket engine thrust room body portion and spray tube flange joint, non-engine self is sealed, it is sealed also to be not suitable for the thrust ware spray tube throat, use the device to carry out the gas tightness detection to the thrust ware throat and can lead to the throat to take place deformation, even because the lightweight of throat causes the thrust ware throat to damage, consequently need provide a sealing device to the thrust ware throat.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a thruster throat part plugging device, provides a sealing plug aiming at the inner diameter of a jet pipe, solves the problems encountered in the tightness inspection of the jet pipe of a thruster, realizes one-time clamping, does not need to be connected with other parts, and conveniently and quickly finishes the test.
According to the thrustor throat plugging device, one end of a push rod is connected with a handle, the other end of the push rod is connected with a plug base, a sealing plug for plugging is arranged on the plug base, and the sealing plug is in contact with the throat neck of a spray pipe to form a sealing strip.
Further optimize, the spray tube entry end set up the end cap connecting piece, the frame mounting is in the end cap connecting piece, the push rod passes through the locating part and is connected with the frame.
Further preferably, a shoulder is arranged on the sealing plug.
Further optimizing, the sealing plug is installed on the plug seat through the plug installation hole, and the sealing plugs with different diameters are installed on the throats with different sizes.
Further optimize, in order to cooperate the handle when rotatory push rod along with rotate, the push rod pass the push rod connecting hole and pass through threaded connection with the handle, push rod and handle adopt the nut fastening, the nut chucking is in the push rod connecting hole.
Further optimization, a blank cutter ball head structure is designed between the plug seat and the push rod.
Further preferably, the sealing plug is a rubber plug.
Further optimized, the push rod connecting hole is of a square structure.
The invention has the advantages that: the thruster throat plugging device can realize one-time clamping of the product nozzle, ensures the sealing quality of the product in the inner hole of the nozzle and simplifies the test preparation flow. Compared with the mode of using the end face to press and seal, the clamping process is convenient, the installation skill is reduced, and the one-time qualification rate of products is greatly improved. The installation method is simple to operate and easy to realize, and the test efficiency is improved. The method provides great convenience for the sealing test of the thin-wall product of the thruster, and lays a foundation for the subsequent product clamping test.
Drawings
Fig. 1 is a schematic structural diagram of a thrust device nozzle.
Fig. 2 is a schematic structural diagram of a thruster throat blocking device.
FIG. 3 is a schematic view of the mounting structure of the throat plugging device of the thruster.
Fig. 4 is an enlarged structural schematic view of a sealing plug of the thruster throat plugging device.
Fig. 5 is a schematic view of the handle structure.
Fig. 6 is a schematic view illustrating the connection between the push rod and the plug seat.
The labels in the figure are: 1-sealing plug, 2-plug seat, 3-push rod, 4-handle, 5-sealing tape, 6-nut, 7-limiting piece, 8-spray pipe, 9-throat, 10-spray pipe inlet end, 11-blank cutter ball head structure, 12-plug mounting hole, 13-frame and 14-push rod connecting hole.
Detailed Description
The throat plugging device of the thruster is further explained with reference to the attached drawings.
The thrust device nozzle structure is shown in fig. 1, one end of the nozzle 8 is a nozzle inlet end 10, the nozzle 8 has a variable diameter, the narrowest part is a throat 9 of the nozzle 8, and the outer wall of the nozzle 8 is very thin. The throat blocking device of the thruster is shown in figure 2: the plug comprises a sealing plug 1, a plug seat 2, a limiting nut 6, a push rod 3, a nut 6, a handle 4 and the like. One end of the push rod 3 is connected with the handle 4, the other end is connected with the plug seat 2, the sealing plug 1 for plugging is arranged on the plug seat 2, and the sealing plug 1 is contacted with the throat 9 of the spray pipe 8 to form a sealing strip 5.
In order to install the thruster plugging device, a plug connecting piece is arranged at the inlet end 10 of the spray pipe, a frame 13 is installed on the plug connecting piece, and the push rod 3 is connected with the frame 13 through a limiting piece 7. When the sealing plug is used, according to the installation shown in figure 3, the frame 13 is connected with the jet pipe of the thruster, the sealing plug 1 is connected with the plug seat 2, the sealing plug 1 is supported through the push rod 3, the limiting part 7 is installed according to the installation shown in figure 3, the plug seat 2 and the plug are enabled to sequentially extend forwards under the action of the push rod 3 through the screwing handle 4, the plug is provided with a shoulder which can effectively clamp the throat diameter part, the rubber sealing plug 1 is attached to the 8 throats of the jet pipe, and then the sealing effect is achieved, and sealing is achieved.
The sealing plugs 1 are arranged on the plug seat 2 through plug mounting holes 12, and the sealing plugs 1 with different diameters are arranged on the throats 9 with different sizes. In order to match the rotation of the handle 4, the push rod 3 rotates along with the rotation of the handle, the push rod 3 penetrates through the push rod connecting hole 14 to be in threaded connection with the handle 4, the push rod 3 and the handle 4 are fastened by the nut 6, the nut 6 is tightly clamped in the push rod connecting hole 14, the push rod connecting hole 14 is of a square structure, the handle 4 can be effectively installed, and the nut 6 can be screwed and fixed, as shown in fig. 5. An empty tool ball head structure 11 is designed between the plug head seat 2 and the push rod 3.
The thruster throat blocking device meets the following design requirements:
(1) The sealing feasibility of the spray pipe is ensured. The sealing plug 1 is matched with the plug seat 2, the functions of extending in and withdrawing out are achieved under the action of the push rod 3, the conical structure is adopted when the sealing plug 1 is designed, the sealing plug can be suitable for sealing different inner diameters of the spray pipes 8, as shown in fig. 4, the spray pipes 8 are in different positions in a sealing mode, different sealing strips 5 can be formed on the surface of the plug, and sealing is achieved. The tool ensures the sealing of the product through the screwing of the handle 4 and is not influenced by the personal technical level.
(2) The labor productivity is improved. Compared with the traditional whole machine press-fitting sealing mode, the design only clamps the sealing plug 1 through the rotary connection of the handle 4, so that the clamping is more convenient and quicker, the influence of the shell machining tolerance on the clamping precision is not required to be considered, the preparation time can be shortened, and the labor productivity is improved.
(3) Has good structural manufacturability so as to facilitate the manufacture, assembly, inspection and maintenance of the clamp.
(4) The sealing surface contacting the throat of the product adopts a rubber mode, so that the surface quality of the throat of the product is effectively protected.
In the aspect of material selection, the sealing plug 1 is required to extend into the throat of the spray pipe 8 to realize contact sealing, and a silicon rubber material with soft texture and good processing performance is selected to ensure the product quality; the plug seat 2, the push rod 3 and the handle 4 should have certain rigidity, 45# steel in a solid solution state is selected as a main body for cost saving, flange treatment is carried out, and the push rod 3 and the handle 4 are tempered and have the rigidity of 35-40 HRC in order to ensure certain rigidity.
In the design of the sealing plug 1 of the thruster throat plugging device, in order to meet the requirements of different inner diameters of thrusters, the sealing plug 1 smoothly extends into the spray pipe 8 and is smaller than the diameter of an inner hole of the spray pipe 8, and the inner hole of the spray pipe 8 has certain compression strength when in contact, therefore, rubber is adopted for processing, the size of the part is selected as the key point of the design, according to the specific size of the product spray pipe 8, the sealing plug 1 is designed to be 50-100mm in length, the diameter of a shoulder is phi 30-50mm, and the size of the plug seat 2 is phi 20-50mm, so that the optimal sealing effect is achieved.
According to the plugging device for the throat of the thruster, an empty cutter ball head structure 11 is designed between the plug seat 2 and the push rod 3, as shown in fig. 6, the situation that after the plug is contacted with the inner wall of the thrust chamber, the plug does not move circumferentially along with the rotation of the push rod 3, axial pressure is only applied to the plug seat 2 through the ball head, the plug does not rotate, abrasion can be reduced, and product sealing is effectively guaranteed. And a mounting hole is formed between the plug seat 2 and the plug, so that the rubber plug and the push rod 3 are separated from the spray pipe 8 together when the rubber plug is decomposed after the air tightness is finished.
The foregoing shows and describes the general principles, general structure, and advantages of the present invention. It will be understood by those skilled in the art that variations and modifications in size and orientation may be made without departing from the spirit and scope of the invention, which is intended to be protected by the following claims.
Claims (8)
1. Thruster throat plugging device, its characterized in that: one end of the push rod is connected with the handle, the other end of the push rod is connected with the plug seat, the sealing plug for plugging is arranged on the plug seat, and the sealing plug is in contact with the throat neck of the spray pipe to form a sealing strip.
2. The thruster throat blocking device according to claim 1, wherein: the inlet end of the spray pipe is provided with a plug connecting piece, the frame is arranged on the plug connecting piece, and the push rod is connected with the frame through a limiting piece.
3. The thruster throat blocking device of claim 1, wherein: and a shoulder is arranged on the sealing plug.
4. The thruster throat blocking device according to claim 1, wherein: the sealing plug is arranged on the plug seat through the plug mounting hole.
5. The thruster throat blocking device according to claim 1, wherein: the push rod penetrates through the push rod connecting hole to be in threaded connection with the handle, the push rod and the handle are fastened through nuts, and the nuts are clamped in the push rod connecting hole.
6. The thruster throat blocking device according to claim 1, wherein: and a blank cutter ball head structure is designed between the plug seat and the push rod.
7. The thruster throat blocking device according to claim 1, 3 or 4, wherein: the sealing plug is a rubber plug.
8. The thruster throat blocking device of claim 5, wherein: the push rod connecting hole is of a square structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211258315.7A CN115638310A (en) | 2022-10-14 | 2022-10-14 | Thruster throat plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211258315.7A CN115638310A (en) | 2022-10-14 | 2022-10-14 | Thruster throat plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115638310A true CN115638310A (en) | 2023-01-24 |
Family
ID=84945060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211258315.7A Pending CN115638310A (en) | 2022-10-14 | 2022-10-14 | Thruster throat plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115638310A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115950596A (en) * | 2023-03-13 | 2023-04-11 | 成立航空技术(成都)有限公司 | Aeroengine nozzle gas tightness detection device |
-
2022
- 2022-10-14 CN CN202211258315.7A patent/CN115638310A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115950596A (en) * | 2023-03-13 | 2023-04-11 | 成立航空技术(成都)有限公司 | Aeroengine nozzle gas tightness detection device |
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