CN221099536U - Sealed dampproof device with air pressure balance function - Google Patents
Sealed dampproof device with air pressure balance function Download PDFInfo
- Publication number
- CN221099536U CN221099536U CN202323263883.9U CN202323263883U CN221099536U CN 221099536 U CN221099536 U CN 221099536U CN 202323263883 U CN202323263883 U CN 202323263883U CN 221099536 U CN221099536 U CN 221099536U
- Authority
- CN
- China
- Prior art keywords
- plug
- dampproof
- moistureproof
- exhaust valve
- air pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 239000003292 glue Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 25
- 239000000463 material Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model belongs to the technical field of ammunition, and provides a sealing moistureproof device with an air pressure balancing function. The device comprises a steel dampproof plug, a dampproof gasket, a one-way exhaust valve and an O-shaped sealing ring, wherein the O-shaped sealing ring is sleeved on the threaded heel part of the one-way exhaust valve, the dampproof gasket is embedded into a groove of the steel dampproof plug, the one-way exhaust valve with the O-shaped sealing ring is screwed into the dampproof plug and is screwed down, and finally the device is screwed into the bullet mouth part to play the roles of sealing and dampproof and regulating the balance of air pressure in the bullet. The utility model combines the unidirectional exhaust valve with the moistureproof plug, so that the moistureproof plug has better sealing performance and air pressure balance function, and corresponding preset pressure relief values can be selected according to the bullets of different fillers. The utility model is mainly used for conventional ammunition of pyrotechnic compositions loaded in the ammunition, and can release slow release gas generated in the storage process, thereby preventing the adverse effect on the loader caused by the increase of the air pressure in the ammunition. Improving the storage performance of the projectile.
Description
Technical Field
The utility model belongs to the technical field of ammunition, and particularly relates to a sealing moistureproof device with an air pressure balancing function.
Background
The ammunition storage life is generally 10-15 years, in order to ensure that the projectile is sealed and dampproof, the projectile opening is sealed by adopting a dampproof plug, the conventional dampproof plug is made of polyethylene plastic materials and is matched with a dampproof gasket for use, and the dampproof gasket is extruded through the dampproof plug and the projectile opening to play a sealing effect, as shown in figure 1.
The conventional pyrotechnic composition can slowly release gas (namely slow release gas) in the long-term storage process, and when the reserved space in the bullet is smaller and the pyrotechnic composition generates slow release gas, the internal pressure of the bullet is increased, so that certain hidden trouble can be brought to the long-term storage and use of the full bullet. Firstly, when the internal pressure of the elastomer is increased and the elastomer cannot be released in time, the powder surface of the pyrotechnic composition is extruded, the strength of the powder surface is reduced due to long-term extrusion, the powder surface is loose, the strength is reduced, the overload resistance is weakened, and hidden danger exists in the launching safety; secondly, as the slow release gas increases, the pressure born by the moistureproof plug increases, and when the pressure continuously increases, the screw thread of the moistureproof plug can be slightly deformed, so that the compression amount of the moistureproof gasket is reduced, a gap is generated to facilitate the slow release gas discharge, the tightness of the moistureproof plug is difficult to ensure due to the gap generated by the screw thread deformation, and the storage performance of a product is adversely affected; thirdly, as the storage life increases, the slow-release gas amount increases, the pressure continuously increases, the moistureproof plug is in a fatigue state for a long time, and meanwhile, the moistureproof plug material is gradually aged, so that the moistureproof plug is likely to crack (the moistureproof plug cracking phenomenon occurs in the storage process of a certain product of the army), and the storage reliability of the projectile is greatly reduced.
In summary, when the conventional moisture-proof plug is applied to pyrotechnic ammunition, hidden hazards exist in sealing performance, safety and storage reliability.
Disclosure of Invention
(1) Object of the invention
The utility model aims to design a sealing moistureproof device with an air pressure balancing function, which is used for solving the technical problem that the storage performance is influenced by slow release air in a bullet, and the stability of the air pressure in the bullet is ensured by changing moistureproof plug materials and adding a one-way exhaust valve, so that the storage reliability of the bullet is improved.
(2) Technical proposal
In order to achieve the above purpose and solve the technical problem, the technical scheme provided by the utility model is as follows:
The sealing moistureproof device with the air pressure balancing function is shown in figure 2, and comprises a steel moistureproof plug 1, a moistureproof gasket 2, a one-way exhaust valve 3 and an O-shaped sealing ring group 4;
The steel dampproof plug 1 is used for bearing the pressure of slow release gas and cannot be deformed and damaged, and the steel dampproof plug 1 is provided with a groove for embedding the dampproof gasket 2 and is used for compression sealing;
The one-way exhaust valve 3 is used for releasing slow release gas in the bomb body from the one-way exhaust valve when the pressure difference between the inside and the outside of the bomb body reaches a preset value, so that the pressure in the bomb body is relieved, and meanwhile, external air cannot enter the bomb body, so that the inside of the bomb body is sealed and dampproof;
The O-shaped sealing ring group 4 is used for being sleeved on the threaded heel part of the one-way exhaust valve 3 and used for guaranteeing sealing after two threads are connected, and the one-way exhaust valve with the O-shaped sealing ring is screwed into the moistureproof plug 1 after being smeared with sealing glue.
(3) Effective benefit
1. The utility model combines the unidirectional exhaust valve with the moistureproof plug, so that the moistureproof plug has better sealing performance and air pressure balance function, and corresponding preset pressure relief values can be selected according to the bullets of different fillers.
2. The moistureproof plug is connected with the one-way exhaust valve by adopting threads, the one-way exhaust valve with the O-shaped sealing ring is screwed into the moistureproof plug and is screwed down by coating sealing glue and extruding the O-shaped sealing ring sleeve for sealing, and finally the device is screwed into the bullet mouth to extrude the moistureproof gasket to play the roles of sealing moistureproof and regulating the balance of air pressure in the bullet.
3. The utility model has the function of unidirectional exhaust, when the pressure difference between the inside and the outside of the bullet reaches the preset value (the preset value adopted by the product is 0.025 MPa), the slow release gas in the bullet is discharged from the exhaust valve, the pressure in the bullet is relieved, and meanwhile, the outside air can not enter the bullet, so that the bullet is sealed and dampproof; the device is made of metal materials, has strength superior to that of a traditional non-metal material moistureproof plug, can not deform or damage when being subjected to slow release gas pressure, can be reliably sealed, and ensures that the full-elastic-length storage and use are reliable.
4. The utility model is mainly used for conventional ammunition of pyrotechnic compositions loaded in the ammunition, and can release slow release gas generated in the storage process, thereby preventing the adverse effect on the loader caused by the increase of the air pressure in the ammunition. Improving the storage performance of the projectile.
Drawings
FIG. 1 is a schematic view of a conventional moisture barrier seal;
FIG. 2 is a schematic view of a sealed moisture barrier with air pressure balancing;
Wherein: 1-dampproof plug, 2-dampproof gasket, 3-one-way exhaust valve, 4-O-shaped sealing ring and 5-bullet mouth
Detailed Description
Pyrotechnic compositions that slowly release gas (i.e., slow release gas) during long-term storage are inherent characteristics of such ammunition. The traditional sealing mode can bring certain hidden trouble to the storage and use of the full bullet length. Therefore, the sealing moistureproof device with the air pressure balancing function provided by the utility model has the following specific real-time mode: the O-shaped sealing ring is sleeved on the threaded heel of the one-way exhaust valve and used for guaranteeing that two threads are connected and sealed, the moistureproof gasket is embedded into the groove of the steel moistureproof plug, the moistureproof plug is made of metal materials, the strength of the moistureproof plug is superior to that of the moistureproof plug made of traditional nonmetallic materials, deformation and damage cannot be generated when the moistureproof plug is subjected to slow release gas pressure, the O-shaped sealing ring can be reliably sealed, full-elastic-length storage and use reliability are guaranteed, the one-way exhaust valve with the O-shaped sealing ring is screwed into the moistureproof plug and screwed down after the sealing ring is smeared with sealing glue, and finally the device is screwed into the bullet mouth by a torque wrench, so that the moistureproof gasket is compressed and sealed.
In order to verify the action and effect of the utility model, test verification is carried out on a smoke bomb of a certain model, and the specific test scheme is as follows:
an accelerated life test was performed on a certain bullet by reference to GJB736.8-90 "initiating explosive device test method 71 ℃ test method". A long storage 38 day and night test (15 storage state is simulated) at 71 ℃ was performed on 10 fuming bullets, wherein 3 cases are sealed by adopting a traditional plastic moisture-proof plug, 3 cases are sealed by adopting a steel moisture-proof plug, and 4 cases are sealed by adopting the moisture-proof device. The state of the bullet after the test is observed, and the gas composition and the content in the bullet are respectively analyzed, and the test results are shown in table 1.
TABLE 1 Main gas composition and content test results
The components of the gas after the accelerated life test are basically the same, wherein the water molecule content is as follows: plastic moisture-proof plug > steel moisture-proof plug with exhaust valve; the hydrogen in the bomb contains: the steel moisture-proof plug with the exhaust valve is obviously lower than the other two moisture-proof plugs. The invention has the advantages that the moistureproof effect is superior to that of the traditional moistureproof plug, the slow release gas is released, and the measure is effective.
The compressive strength of the stored 10-bullet inner drug charge was measured, and the test results are shown in table 2.
Table 2 accelerated life compressive strength test data
The compressive strength of the filler after the accelerated life test is as follows: the steel dampproof plug with the exhaust valve is plastic dampproof plug. Comprehensive gas component test result analysis shows that the plastic moistureproof plug has the gas leakage phenomenon in the storage process, slow release gas is less, water molecules enter, and the tightness is difficult to meet the use requirement; the steel dampproof plug has no obvious air leakage phenomenon in the storage process, slow release gas is left in the bullet, so that the air pressure is increased, the strength of the stored medicament is obviously reduced, the dampproof plug made of the material has good tightness, but the slow release gas cannot be discharged, and the storage performance of the medicament in the bullet is influenced; the steel dampproof plug with the exhaust valve has small strength reduction amplitude after storage and low moisture content, which indicates that the sealing property is good, the slow release gas is released, the performance change of the stored medicament is small, and the comprehensive performance is superior to that of the other two dampproof plugs. In summary, the invention can effectively seal the pellets and release the slow release gas, thereby obviously improving the storage performance of the pellets.
The foregoing is a further detailed description of the utility model in connection with specific embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (1)
1. The sealing moistureproof device with the air pressure balancing function is characterized by comprising a steel moistureproof plug (1), a moistureproof gasket (2), a one-way exhaust valve (3) and an O-shaped sealing ring (4);
the steel dampproof plug (1) is used for bearing the pressure of slow release gas and cannot deform and be damaged, and the steel dampproof plug (1) is provided with a groove for embedding the dampproof gasket (2) and is used for compression sealing;
The one-way exhaust valve (3) is used for releasing slow release gas in the bomb body from the one-way exhaust valve (3) when the pressure difference between the inside and the outside of the bomb body reaches a preset value, so that the pressure in the bomb body is relieved, and meanwhile, external air cannot enter the bomb body, so that the inside of the bomb body is sealed and dampproof;
The O-shaped sealing ring (4) is used for being sleeved on the threaded heel of the one-way exhaust valve (3) and used for guaranteeing sealing after two threads are connected, and the one-way exhaust valve (3) with the O-shaped sealing ring (4) is screwed into the steel moistureproof plug (1) after being coated with sealing glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323263883.9U CN221099536U (en) | 2023-11-30 | 2023-11-30 | Sealed dampproof device with air pressure balance function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323263883.9U CN221099536U (en) | 2023-11-30 | 2023-11-30 | Sealed dampproof device with air pressure balance function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221099536U true CN221099536U (en) | 2024-06-07 |
Family
ID=91319843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323263883.9U Active CN221099536U (en) | 2023-11-30 | 2023-11-30 | Sealed dampproof device with air pressure balance function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221099536U (en) |
-
2023
- 2023-11-30 CN CN202323263883.9U patent/CN221099536U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS61501411A (en) | pipe fittings | |
| CN221099536U (en) | Sealed dampproof device with air pressure balance function | |
| CA2678604C (en) | A tight threaded joint of oil field pipes | |
| CN113758366A (en) | Be applied to experimental bullet support of using of 105mm smooth bore big gun | |
| CN105422941B (en) | A kind of mining fire electro-explosion valve of high-pressure large-caliber | |
| CN112879566B (en) | Radial sealing device for compensating insufficient elasticity of material by improving resilience capability of structure | |
| CN108798550A (en) | A kind of titanium alloy oil pipe anti-galling air-tight seal screw joint | |
| CN108413088A (en) | Ultracapacitor fluid-tight relief valve | |
| CN105134673B (en) | The super-pressure conical surface is sealed from pretension accumulator firmly | |
| GB2566031A (en) | Improved gasket | |
| CN204493781U (en) | Self-erecting type ultra-low torque fixing ball valve | |
| CN208605663U (en) | A kind of high platform seal ball-valve | |
| CN103672011A (en) | Cryogenic top entry type fireproof ball valve with composite heat dissipation disc valve cover | |
| CN221099533U (en) | Steel dampproof plug for bullet | |
| CN103899859B (en) | Secondary seal pipe joint and cutting ferrule thereof | |
| CN210918913U (en) | High-torsion-resistance air-tight seal oil casing threaded joint | |
| CN207147311U (en) | A kind of protective plug applied to gun muzzle | |
| CN204042047U (en) | Dress formula fire prevention fixing ball valve in one | |
| CN210920184U (en) | Hard sealing structure of wedge-shaped graphite packing | |
| CN218821942U (en) | Test projectile with adjustable medicine chamber volume and mass center and small-caliber test grenade | |
| CN207588602U (en) | A kind of motor and threaded connector | |
| CN208620045U (en) | A kind of grease pouring valve | |
| CN206972964U (en) | Ball valve | |
| CN204720314U (en) | The power capacitor apparatus of internal pressure can be discharged | |
| CN209294583U (en) | A kind of engineering machinery rubber hose |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |