CN201647483U

CN201647483U - Manhole cover mounted at top part of oil tank truck

Info

Publication number: CN201647483U
Application number: CN2010201725388U
Authority: CN
Inventors: 吴益方; 陈国方; 吴鹏; 吕煌杰
Original assignee: CHANGZHOU KAIPENG LIQUID FLOW EQUIPMENT Co Ltd
Current assignee: CHANGZHOU KAIPENG LIQUID FLOW EQUIPMENT Co Ltd
Priority date: 2010-04-28
Filing date: 2010-04-28
Publication date: 2010-11-24
Anticipated expiration: 2020-04-28

Abstract

The utility model relates to a manhole cover mounted at the top part of an oil tank truck, which comprises a big cover, a small cover and a breather valve, as well as an upper pressure plate and a lower pressure plate which are respectively hinged with the big cover, wherein the upper pressure plate is positioned above the right half part of the small cover, the lower pressure plate is positioned above the left half part of the small cover, the position of the upper pressure plate is higher than that of the lower pressure plate, a seal ring is arranged at the junction of the small cover and the big cover, a lock is mounted between the upper pressure plate and the small cover, and a lock tongue of the lock is matched with a link stopper fixed at the bottom part of the upper pressure plate; and a locking device is further mounted on the upper pressure plate, the locking device consists of a lock hook shaft, a lock hook, a long sleeve, a torsion spring and a lock pressure shaft, the long sleeve is sheathed on the lock pressure shaft, the long sleeve and the lock hook are rotatably supported on the big cover, the torsion spring is mounted on the lock pressure shaft, one end of the torsion spring is pushed against the lock hook, the lock hook is matched with the lock hook shaft, and the two ends of the lock hook shaft are fixedly connected with the upper pressure plate. The utility model provides the manhole cover mounted at the top part of the oil tank truck, which can improve the safety performance of transportation of the oil tank truck and prevent explosion accidents of the oil tank truck.

Description

Be installed in the manhole cover at truck tanker top

Technical field

The utility model relates to the truck tanker field, specifically, relates to a kind of manhole cover that is installed in the truck tanker top.Be applicable to the truck tanker of light fuels such as gasoline, kerosene, diesel oil.

Background technology

Along with the continuous development of industry, oil product class demand increases day by day, and the safety of petroleum transported tank car and the requirement of environmental-protecting performance are also constantly improved.The present domestic manhole cover that mainly contains two kinds of forms, a kind of be dash the dress lid built-in a breathing valve, there is the problem of respiratory capacity deficiency in it, and directly has influence on the speed of emptying, the oil tank that its only is fit to less volume uses.Another kind be on manhole plate external one ventilate and topple over safety valve.The structure of this external causes the damage of oil tank in storage and transport process easily, is unfavorable for safe operation.Traditional ventilation and topple over the effect of safety valve to no pressurize in the oil tank, promptly oil tank inside can be brought oil product to volatilize like this and waste energy and environmental pollution problems by being toppled over safety valve and ventilative back-fire relief cap communicates with atmosphere.

Summary of the invention

The purpose of this utility model provides a kind of safety performance that improves the transportation of energy truck tanker, prevents that the manhole cover that is installed in the truck tanker top of explosion accident from appearring in truck tanker.

The technical scheme that realizes above-mentioned purpose is: a kind of manhole cover that is installed in the truck tanker top, comprise big lid, tegillum, breathing valve and respectively with big lid pivotally attached top board and lower platen, top board is positioned at the top of tegillum right-hand part, lower platen is positioned at the top of the left side of tegillum, and the position of top board is higher than the position of lower platen, tegillum is provided with seal ring with the junction of big lid, breathing valve is positioned at the below of tegillum, between top board and the tegillum lock is installed, the dead bolt of this lock cooperates with the collision block that is fixed on the top board bottom; Latching device also is installed on the top board, this latching device is made up of lock hook axle, lock hook, long sleeve pipe, torsion spring and lock last item, long casing pipe sleeve is on the lock last item, long sleeve pipe and lock hook all can be rotated to support on greatly and cover, torsion spring is installed on the lock last item, and an end of torsion spring is against on the lock hook, and lock hook cooperates with the lock hook axle, captives joint with top board in the two ends of lock hook axle.

Further, cover greatly and have three standby holes, wherein two is aperture, and one is macropore, and little blind flange is installed on the aperture, and big blind flange is installed on the macropore.

After adopting technique scheme, when truck tanker meets accident or container is among the raging fire, at high temperature be badly in need of gas in the toilet-cleaning jar, the tegillum of manhole cover has the dump function, and pressure is emergency opening when 21～35KPa, and its maximum free air capacity is at 7000m ³More than/the h, can effectively prevent the explosion accident of truck tanker, thereby improve the transportation safety performance of truck tanker.

After adopting further technical scheme, three standby holes that cover greatly can be used for installing oil gas recovery valve, anti-overflow probe and gauge hatch.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the birds-eye view of Fig. 1;

Fig. 3 is that the H of Fig. 1 is to postrotational structural representation;

Fig. 4 is the A-A cross-sectional schematic of Fig. 1;

Fig. 5 is the B-B cross-sectional schematic of Fig. 1;

Fig. 6 is the C-C cross-sectional schematic of Fig. 1;

Fig. 7 is the D-D cross-sectional schematic of Fig. 1.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

Shown in Fig. 1～7, a kind of manhole cover that is installed in the truck tanker top, comprise big lid 2, tegillum 1, breathing valve and respectively with big lid 2 pivotally attached top boards 3 and lower platen 4, top board 3 is positioned at the top of tegillum 1 right-hand part, lower platen 4 is positioned at the top of the left side of tegillum 1, and the position of top board 3 is higher than the position of lower platen 4, tegillum 1 is provided with seal ring 15 with the junction of big lid 2, breathing valve 26 is positioned at the below of tegillum 1, lock 17 is installed between top board 3 and the tegillum 1, and the dead bolt 17-1 of this lock 17 cooperates with the collision block 16 that is fixed on top board 3 bottoms by screw 18 and the 3rd packing ring 19; Latching device also is installed on the top board 3, this latching device is made up of lock hook axle 25, lock hook 20, long sleeve pipe 22, torsion spring 21 and lock last item 24, long sleeve pipe 22 is enclosed within on the lock last item 24, long sleeve pipe 24 and lock hook 20 all can be rotated to support on the big lid 2, torsion spring 21 is installed on the lock last item 24, and an end of torsion spring 21 is against on the lock hook 20, and lock hook 20 cooperates with lock hook axle 25, captives joint with top board 3 in the two ends of lock hook axle 25.

As Fig. 1,5 and shown in Figure 6, big lid 2 has three standby holes, wherein two is aperture, one is macropore, be installed with two little blind flanges 7 and second rubber cushion 12 be installed by second bolt 13 and second packing ring 14 on the aperture, on the macropore between the two little blind flanges 7 on the big lid 2, be installed with a big blind flange 8 and first rubber cushion 9 be installed in the cooperation place of big lid 2 and big blind flange 8 by first bolt 10 and first packing ring 11 in the cooperation place of big lid 2 and little blind flange 7.Three standby holes on the big lid 2 can be used for installing oil gas recovery valve, anti-overflow probe and gauge hatch.

Principle of work of the present utility model is as follows:

After manhole cover is installed at the truck tanker top, when truck tanker meets accident or container is among the raging fire, at high temperature be badly in need of gas in the toilet-cleaning jar, the tegillum 1 of manhole cover has the dump function, and pressure is emergency opening when 21～35KPa, and its maximum free air capacity is at 7000m ³More than/the h, simultaneously the anti-overflow valve of toppling in the breathing valve of installing below tegillum 1 begins action, and the automatic seal passage effectively prevents to leak or flame enters the explosion accident that causes truck tanker in the jar because of oil plant, thereby improves the transportation safety performance of truck tanker.

Claims

1. manhole cover that is installed in the truck tanker top, comprise big lid (2), tegillum (1), breathing valve (26) and respectively with big lid (2) pivotally attached top board (3) and lower platen (4), top board (3) is positioned at the top of tegillum (1) right-hand part, lower platen (4) is positioned at the top of the left side of tegillum (1), and the position of top board (3) is higher than the position of lower platen (4), tegillum (1) is provided with seal ring (15) with the junction of big lid (2), breathing valve (26) is positioned at the below of tegillum (1), it is characterized in that: between top board (3) and the tegillum (1) lock (17) is installed, the dead bolt (17-1) of this lock (17) cooperates with the collision block (16) that is fixed on top board (3) bottom; Top board also is equipped with latching device on (3), this latching device is made up of lock hook axle (25), lock hook (20), long sleeve pipe (22), torsion spring (21) and lock last item (24), long sleeve pipe (22) is enclosed within on the lock last item (24), long sleeve pipe (24) and lock hook (20) all can be rotated to support on the big lid (2), torsion spring (21) is installed on the lock last item (24), and an end of torsion spring (21) is against on the lock hook (20), lock hook (20) cooperates with lock hook axle (25), captives joint with top board (3) in the two ends of lock hook axle (25).

2. the manhole cover that is installed in the truck tanker top according to claim 1 is characterized in that: have three standby holes on the big lid (2), wherein two is aperture, and one is macropore, and little blind flange (7) is installed on the aperture, and big blind flange (8) is installed on the macropore.