Anti-pressure-relief plugging device for shale oil storage tank

Abstract

The utility model relates to the technical field of shale oil production and preparation, in particular to an anti-pressure-relief plugging device for a shale oil storage tank, and aims to solve the problems that in the shale oil production and preparation process at present, as an emptying pipeline of the shale oil storage tank lacks a special plugging adjusting mechanism, the oil storage tank is prone to pressure relief in the emptying state, and the oil storage tank cannot be blocked. And finally, the problems of pressure disorder of the whole oil pumping and storage system, flooding and oil spilling of the oil storage tank and poor production safety are caused. The device mainly comprises a semicircular flange, a connecting screw rod, a sealing gasket, a locking flange and the like, the detachable connecting flange and the sealing gasket are additionally arranged at an outlet of an oil storage tank emptying pipeline, and the locking flange is used for reinforcing and locking, so that the pressure stability of the oil storage tank in an emptying state is effectively ensured, and the leakage of the oil storage tank is avoided; and the risk that the safety production is influenced by flooding liquid overflow of the oil storage tank and disorder of the destructive distillation system caused by pressure distortion of the shale oil pumping system and the oil storage system is obviously eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of shale oil production and preparation, and in particular to an anti-pressure relief plugging device for a shale oil storage tank. Background Art

[0002] The existing shale oil storage tank has a DN200 exhaust pipe on the top, and a breathing valve is installed on the manhole on the top of the shale oil storage tank. Since there is no valve to adjust the DN200 exhaust pipe, it is very easy to cause the oil tank to release pressure when it is in the emptying state, resulting in unbalanced pressure in the tank and the failure of the breathing valve to operate normally, which will lead to the failure of VOCs to meet the emission standards in the later stage. It also causes pressure disorder of the entire oil pumping and storage system and inaccurate pressure of the oil tank. It cannot correctly display the pressure and real liquid level data of the oil tank in the safe state, resulting in the inability to judge the real safe working pressure of the oil tank during the pumping operation. At the same time, the oil tank also has the risk of flooding and overflowing oil, resulting in the overall pressure of the shale oil storage tank not being realistic, and it is very easy to cause disorder of the entire distillation operation system, which ultimately affects the overall production efficiency and safety of shale oil production and preparation to a large extent. Utility Model Content

[0003] The utility model provides a pressure relief anti-blocking device for a shale oil storage tank to solve the problems existing in the above background.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A pressure relief plugging device for shale oil storage tanks comprises a first semicircular flange and a second semicircular flange which are symmetrically and detachably mounted on the outlet side of a drain pipe, a sealing gasket is mounted on the side of the first semicircular flange and the second semicircular flange away from the outlet of the drain pipe, and a locking flange is also mounted on the side of the sealing gasket.

[0006] Furthermore, connecting plates are symmetrically fixed on the sides of the first semicircular flange and the second semicircular flange, a first connecting screw is passed between the connecting plates, and the first semicircular flange and the second semicircular flange are detachably connected via the first connecting screw.

[0007] Furthermore, a plurality of second connecting screws are evenly distributed on the locking flange, and the locking flange, the sealing gasket, the first semicircular flange and the second semicircular flange are all detachably connected through the second connecting screws.

[0008] The utility model has the following beneficial effects:

[0009] The utility model provides an anti-pressure relief sealing device for shale oil storage tanks, which is mainly composed of components such as a semicircular flange, a connecting screw, a sealing gasket and a locking flange. By adding a detachable connecting flange and a sealing gasket at the outlet of the oil storage tank emptying pipe, and strengthening the locking with the locking flange, the pressure stability of the oil storage tank when it is in an emptying state is effectively ensured, and leakage is avoided. The risk of oil tank flooding and overflowing and distillation system disorder caused by pressure distortion of the shale oil pumping system and the oil storage system, which affects safe production, is significantly eliminated. The utility model solves the problem that in the current shale oil production and preparation process, the shale oil storage tank emptying pipe lacks a special sealing and regulating mechanism, which usually easily leads to oil tank pressure relief in the emptying state, and finally causes pressure disorder of the entire oil pumping and storage system, oil tank flooding and overflow, and poor production safety.

[0010] The separate installation of the first semicircular flange 2 and the second semicircular flange 3 in the utility model effectively avoids hot-fire welding and cutting operations on the upper part of the shale oil storage tank, thereby greatly ensuring the operational safety of the shale oil storage tank and improving the overall convenience of the installation of the plugging device.

[0011] The utility model has a simple process and a short process cycle, effectively prevents the shale oil storage tank from displaying a non-real safe working pressure during pressure relief, better guarantees the normal operation of the breathing valve on the top of the shale oil storage tank, ensures that the VOCs system in the later stage is discharged normally and meets the standard, solves the problem of pressure disorder of the whole pumping and storage system caused by the distortion of the safe working pressure of the oil storage tank, ensures that the pressure of the oil storage tank is real and accurate, correctly displays the safe operating pressure of the oil storage tank and accurately displays the shale oil level, and eliminates the risk of flooding and overflowing of the oil storage tank caused by the inability to provide the real safe working pressure of the oil storage tank during the pumping operation, and eliminates the hidden dangers of disorder of the whole distillation operation system and affecting safe production which are very easy to appear due to the overall pressure distortion of the shale oil storage tank, thereby greatly ensuring the safe and stable operation of the pumping, oil storage and distillation systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a forward schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a side schematic diagram of the overall structure of the utility model.

[0014] The meanings of the reference numerals are as follows:

[0015] 1. Drain pipe; 2. First semicircular flange; 3. Second semicircular flange; 4. Connecting plate; 5. First connecting screw; 6. Sealing gasket; 7. Locking flange; 8. Second connecting screw. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] like Figure 1-2 As shown, a pressure relief blocking device for shale oil storage tanks includes a first semicircular flange 2 and a second semicircular flange 3 which are symmetrically and detachably mounted on the outlet side of a drain pipe 1, a sealing gasket 6 is mounted on the side of the first semicircular flange 2 and the second semicircular flange 3 away from the outlet of the drain pipe 1, and a locking flange 7 is also mounted on the side of the sealing gasket 6.

[0018] Connecting plates 4 are symmetrically fixed to the sides of the first semicircular flange 2 and the second semicircular flange 3 , a first connecting screw 5 is passed through the connecting plates 4 , and the first semicircular flange 2 and the second semicircular flange 3 are detachably connected via the first connecting screw 5 .

[0019] A plurality of second connecting screws 8 are evenly distributed on the locking flange 7 , and the locking flange 7 , the sealing gasket 6 , the first semicircular flange 2 and the second semicircular flange 3 are all detachably connected through the second connecting screws 8 .

[0020] When the utility model is used in a specific application, while keeping other process flows and other facilities on the top of the shale oil storage tank unchanged, since the upper part of the shale oil storage tank cannot be welded or cut with hot fire, two first semicircular flanges 2 and second semicircular flanges 3 with specifications of DN200 are symmetrically installed at the upper outlet of the original DN200 drain pipe 1, and then the first semicircular flange 2 and the second semicircular flange 3 are fastened by a first connecting screw 5 through a connecting plate 4 pre-welded to the sides of the first semicircular flange 2 and the second semicircular flange 3, and then a sealing gasket 6 is installed at the discharge pipe opening of the drain pipe 1 to seal the discharge pipe opening, and then a complete DN200 specification The locking flange 7 presses the sealing gasket 6 against the discharge pipe mouth of the exhaust pipe 1, and finally the first semicircular flange 2, the second semicircular flange 3, the sealing gasket 6 and the locking flange 7 clamped at the pipe mouth are connected and fixed by the second connecting screw 8, thereby completing the installation of the sealing device. The anti-pressure relief sealing of the shale oil storage tank by the sealing device effectively prevents the phenomenon that the VOCs cannot be discharged up to the standard due to the pressure relief of the discharge port and the inability of the breathing valve on the top of the oil storage tank to operate normally, thereby eliminating the risk of oil overflow in the oil storage tank caused by the distortion of the safe working pressure of the oil pumping and oil storage system, and further improving the stability and safety of the operation of the whole distillation system. Therefore, the device has good practicality.

Claims

1. A pressure relief plugging device for a shale oil storage tank, characterized in that: The invention comprises a first semicircular flange (2) and a second semicircular flange (3) which are symmetrically and detachably clamped on the outlet side of an exhaust pipe (1); a sealing gasket (6) is clamped on the side of the first semicircular flange (2) and the second semicircular flange (3) away from the outlet of the exhaust pipe (1); and a locking flange (7) is also provided on the side of the sealing gasket (6).

2. The anti-pressure relief plugging device for shale oil storage tanks according to claim 1 is characterized in that: Connecting plates (4) are symmetrically fixedly provided on the sides of the first semicircular flange (2) and the second semicircular flange (3), a first connecting screw (5) is passed through the connecting plates (4), and the first semicircular flange (2) and the second semicircular flange (3) are detachably connected via the first connecting screw (5).

3. The anti-pressure relief plugging device for shale oil storage tanks according to claim 1 is characterized in that: A plurality of second connecting screws (8) are evenly distributed on the locking flange (7), and the locking flange (7), the sealing gasket (6), the first semicircular flange (2) and the second semicircular flange (3) are all detachably connected through the second connecting screws (8).

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