A kind of plane air inflation sealing device for tank car tank mouth
[technical field]
The utility model relates to a kind of sealing arrangement, is specifically related to a kind of plane air inflation sealing device for tank car tank mouth.
[background technology]
Known, loading and unloading benzene in transportation tank car, fuel oil, organic steam and hydrogen sulphide, during the gas of the media such as soda acid, load and unload as adopted the extensive style of outdoor high altitude discharge, poisonous oil gas can be produced, harmful gas, also fire and explosion accident can be caused time serious, very large impact is caused on safety in production and personal safety and environmental protection, in order to solve the problem, oil filling riser is inserted the tank mouth of tank car by those skilled in the art usually, then face seal upper cover is set in the upper end of oil filling riser, then between on sealing upper cover and tank mouth, packing seal is set, reach the object of Leakage Gas in advance, but this structure is when reality uses, if tank mouth is out of shape, sealing upper cover sealing surface just can not with tank mouth tight seal, the leakage etc. of gas cannot be prevented, but head it off is again instant, a kind of sealing arrangement being suitable for tank car tank mouth so how is provided just to have become the long-term technology demand of those skilled in the art.
[summary of the invention]
For overcoming the deficiency existed in background technology; the utility model provides a kind of plane air inflation sealing device for tank car tank mouth; the utility model by arranging planar air bag below sealing upper cover; realize the excellent sealing of oil filling riser and tank mouth; actv. protection planar air bag is not damaged; the features such as it is simple that the utility model has structure, good sealing effect, easy to operate.
For realizing goal of the invention as above, the utility model adopts technical scheme as described below:
A kind of plane air inflation sealing device for tank car tank mouth, comprise oil filling riser, planar air bag, sealing upper cover and Guan Kou, sealing upper cover is provided with above described filling mouth, planar air bag is provided with between described sealing upper cover and filling mouth, described planar air bag connection is arranged on the inflation inlet that sealing covers, and is provided with the oil filling riser extending to tank car inside forms the described plane air inflation sealing device for tank car tank mouth at the middle part of sealing upper cover.
The described plane air inflation sealing device for tank car tank mouth, described planar air bag is fixed on below sealing upper cover by air bag bolt of rear end plate.
The described plane air inflation sealing device for tank car tank mouth, the outer edge surface of described sealing upper cover is provided with the air bag limit dais to downward-extension.
The described plane air inflation sealing device for tank car tank mouth, the top of described oil filling riser is provided with oil filling riser flange, and described oil filling riser flange is fixedly installed on the middle part of sealing upper cover.
The described plane air inflation sealing device for tank car tank mouth, described oil filling riser flange is fixed by screws in the middle part of sealing upper cover.
The described plane air inflation sealing device for tank car tank mouth, is provided with seal ring between described sealing upper cover and oil filling riser flange.
The described plane air inflation sealing device for tank car tank mouth, described sealing covers and is provided with compression indicator, and described compression indicator is communicated with planar air bag.
The described plane air inflation sealing device for tank car tank mouth, described oil filling riser flange is respectively equipped with the through petroleum vapor recovery hole to tank car inside and liquid level detector mounting hole, and described petroleum vapor recovery hole connects device for recovering oil and gas.
Adopt technical scheme as above, the utility model has preceence as described below:
A kind of plane air inflation sealing device for tank car tank mouth described in the utility model; the utility model by arranging planar air bag below sealing upper cover; at the middle part of sealing upper cover, oil filling riser is set; realize the excellent sealing of oil filling riser and tank mouth; actv. protection planar air bag is not damaged, and it is simple that the utility model has structure, good sealing effect; the feature such as easy to operate, is applicable to large-scale promotion and application.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present utility model.
In the drawings: 1, oil filling riser; 2, seal ring; 3, inflation inlet; 4, air bag bolt of rear end plate; 5, planar air bag; 6, oil filling riser flange; 7, screw; 8, upper cover is sealed; 9, air bag limit dais; 10, Guan Kou; 11, petroleum vapor recovery hole; 12, liquid level detector mounting hole.
[detailed description of the invention]
Can explain the utility model in more detail by the following examples, the utility model is not limited to the following examples;
A kind of plane air inflation sealing device for tank car tank mouth by reference to the accompanying drawings described in 1, comprise oil filling riser 1, planar air bag 5, sealing upper cover 8 and fill with mouth 10, above described filling mouth 10, be provided with sealing upper cover 8, the outer edge surface of described sealing upper cover 8 is provided with the air bag limit dais 9 to downward-extension for limiting planar air bag position, between described sealing upper cover 8 and filling mouth 10, be provided with planar air bag 5, described planar air bag 5 is fixed on below sealing upper cover 8 by air bag bolt of rear end plate 4, and below planar air bag 5, mouth 10 is filled with in sealing, described planar air bag 5 is communicated with the inflation inlet 3 be arranged on sealing upper cover 8, described inflation inlet 3 connects source of the gas, the oil filling riser 1 extending to tank car inside is provided with at the middle part of sealing upper cover 8, further, for the ease of replacing and the maintenance of planar air bag 5, on the top of described oil filling riser 1, oil filling riser flange 6 is set, described oil filling riser flange 6 is fixedly installed on the middle part of sealing upper cover 8, wherein oil filling riser flange 6 is fixed on the middle part of sealing upper cover 8 by screw 7, namely screw-threaded counterbore is set on sealing upper cover 8, oil filling riser flange 6 arranges the unthreaded hole corresponding with screw, then connect to coordinate by screw and the silk of screw 7 and oil filling riser flange 6 and sealing upper cover 8 are fixed together, further, in order to ensure the leak tightness between oil filling riser flange 6 and sealing upper cover 8, seal ring 2 is set between described sealing upper cover 8 and oil filling riser flange 6, further again, sealing upper cover 8 arranges compression indicator, described compression indicator is communicated with planar air bag 5, described oil filling riser flange 6 is respectively equipped with the through petroleum vapor recovery hole 11 to tank car inside and liquid level detector mounting hole 12, described petroleum vapor recovery hole 11 connects device for recovering oil and gas, and liquid level detector mounting hole 12 connecting fluid bit detector forms the described plane air inflation sealing device for tank car tank mouth.
The utility model is when reality uses, and when oil filling riser 1 drops to bottom tank car, the inlet open of source of the gas, inflated in planar air bag 5 by inflation inlet 3, planar air bag 5 expands downwards, is adjacent to tank car tank mouth 10, sealing effectiveness good when reaching oil filling riser 1 entrucking.
It is about 15mm with the rear expansion height of inflation that the utility model midplane air bag 5 is inflated front; It is various vehicles between 550 ~ 600 that planar air bag 5 sealing meets tank mouth 10 external diameter; The inflation pressure of planar air bag 5 is determined according to the actual needs of seal ring, being as the criterion by effective sealing; Planar air bag 5 is withstand voltage between 0.1 ~ 0.2Mpa; Planar air bag 5 material is fluorine glue or oil proof rubber, and wherein fluorine glue planar air bag 5 contact medium, is adapted to the gas of benzene, acid-base material, and oil proof rubber planar air bag 5 contact medium, is adapted to the gas of the fuel oil materials such as gasoline, diesel oil, kerosene; Wherein sealing part works temperature is-20 DEG C ~+50 DEG C; Planar air bag 5 has certain crash-worthiness, and planar air bag 5 is not fragile after downthrust.
The non-detailed portion of the utility model is prior art.
The embodiment selected in this article in order to open the purpose of this utility model, currently thinks to be suitable for, but it is to be understood that the utility model is intended to comprise all changes belonging to the embodiment in this design and invention scope and improvement.