CN212051254U - Oil storage tank dewatering system - Google Patents

Abstract

The utility model provides an oil storage tank dehydration system, which comprises an oil storage tank and a dehydration tank, wherein the oil storage tank is provided with a first liquid outlet, the dehydration tank is provided with a liquid inlet and a second liquid outlet, the liquid inlet is communicated with the first liquid outlet, and the second liquid outlet is provided with a first valve for opening or closing the second liquid outlet; a control device for controlling the first valve to be opened or closed is arranged in an inner cavity of the dehydration tank, the control device comprises a floating ball assembly and a switch assembly, the floating ball assembly comprises a floating ball, and the floating ball can float upwards under the action of liquid entering from the liquid inlet so as to trigger the switch assembly to open the first valve; the density of the floating ball is greater than that of oil in the oil storage tank and less than that of water; the top of dehydration jar has the blow vent, and the inner chamber of dehydration jar passes through blow vent and outside atmosphere intercommunication to workman working strength is great problem when not only can solving artifical dehydration, can avoid harmful gas to threaten workman's health moreover.

Description

Oil storage tank dewatering system

Technical Field

The utility model relates to a crude oil storage tank water oil separating technical field especially relates to an oil storage tank dewatering system.

Background

The storage tank is an essential device for the storage of crude oil. The crude oil produced at present has a certain water content, which not only affects the quality of the oil, but also corrodes the downstream pipelines, so that the crude oil needs to be dehydrated.

The dehydration mode that commonly uses among the prior art is the settlement dehydration, utilizes the density difference of crude oil and water, through long-time the standing with water oil separating, then open the dehydration valve of oil storage tank bottom and discharge the water in the oil storage tank to reduce the water content of the inside crude oil of storage tank, when specifically realizing, promptly the oil storage tank oil recovery finishes and through the settlement of a period of time after, the manual work is opened the dehydration valve in the scene and is dehydrated, and observe near the dehydration mouthful and take off the thing in order to judge whether to dewater and finish.

However, not only does the labor intensity of the worker increase by manually judging whether the dehydration is finished, but also the dehydrated product usually contains harmful gas, which brings threat to the health of the dehydration worker.

SUMMERY OF THE UTILITY MODEL

The utility model provides an oil storage tank dewatering system, workman working strength is bigger problem when not only can solving artifical dehydration, can avoid harmful gas to threaten workman's health moreover.

The utility model provides an oil storage tank dehydration system, which comprises an oil storage tank and a dehydration tank, wherein the oil storage tank is provided with a first liquid outlet, the dehydration tank is provided with a liquid inlet and a second liquid outlet, the liquid inlet is communicated with the first liquid outlet, and the second liquid outlet is provided with a first valve for opening or closing the second liquid outlet;

a control device for controlling the first valve to be opened or closed is arranged in an inner cavity of the dewatering tank, the control device comprises a floating ball assembly and a switch assembly, the floating ball assembly comprises a floating ball, and the floating ball can float upwards under the action of liquid entering from the liquid inlet so as to trigger the switch assembly to open the first valve; the density of the floating ball is greater than that of oil in the oil storage tank and less than that of water;

the top of the dehydration tank is provided with a vent hole, and the inner cavity of the dehydration tank is communicated with the external atmosphere through the vent hole.

Optionally, the floating ball assembly further comprises a floating ball guide cylinder, and the floating ball guide cylinder is fixed relative to the dewatering tank;

the floating ball is positioned in the floating ball guide cylinder, and the floating ball guide cylinder is provided with a through hole so as to communicate the inner cavity of the floating ball guide cylinder with the inner cavity of the dehydration tank.

The oil storage tank dewatering system as described above, optionally, the floating ball assembly further includes a connecting rod structure;

the connecting rod structure comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the bottom end of the floating ball, the other end of the first connecting rod is rotatably connected with one end of the second connecting rod, a trigger is arranged at the other end of the second connecting rod, the second connecting rod is connected with the dewatering tank through a supporting point, and when the floating ball floats upwards, the second connecting rod can rotate around the supporting point under the driving of the floating ball and the first connecting rod, so that the trigger triggers the switch assembly to open the first valve.

In the oil tank dehydration system as described above, optionally, the switch assembly includes a switch protection box and a contact switch disposed in the switch protection box;

an avoidance hole for the trigger piece to pass through is formed in the switch protection box, and the trigger piece and the wall of the avoidance hole are arranged in a sealing mode;

the contact switch is provided with a valve opening loop, a valve closing loop and a contact shifting piece, the valve opening loop is provided with a first contact, the valve closing loop is provided with a second contact, the trigger piece is used for triggering the contact shifting piece to be communicated with the first contact or the second contact, the first valve is opened when the contact shifting piece is communicated with the first contact, and the first valve is closed when the contact switch is communicated with the second contact.

In the dewatering system for the oil storage tank, optionally, the trigger includes a steel wire rope, and the steel wire rope is inserted into the avoiding hole; the top end of the steel wire rope is connected with the second connecting rod, and the bottom end of the steel wire rope is connected with the contact shifting piece;

and at least the part of the steel wire rope exposed outside the switch protection box is also sleeved with a protective sleeve.

In the oil tank dehydration system, optionally, the first liquid outlet is communicated with the liquid inlet through a dehydration pipe;

the dewatering pipe comprises a first pipe section, a second pipe section and a third pipe section, wherein the inlet of the first pipe section is communicated with the first liquid outlet, the inlet of the second pipe section and the inlet of the third pipe section are respectively communicated with the outlet of the first pipe section, and the outlet of the second pipe section is communicated with the liquid inlet;

the second pipe section is provided with a second valve, and the second valve is used for opening or closing the liquid inlet;

and a third valve is arranged on the third pipe section and used for closing the outlet of the third pipe section or communicating the first liquid outlet with the outlet of the third pipe section.

The oil tank dehydration system as described above, optionally, further comprises a water content detector, wherein the water content detector is configured to detect the water content of the liquid flowing out from the first liquid outlet;

the moisture detector is arranged close to the first liquid outlet.

As above-mentioned oil storage tank dewatering system, optionally, oil storage tank dewatering system still includes the sump oil collecting pit, the second liquid outlet with the sump oil collecting pit intercommunication, the sump oil collecting pit is used for collecting the follow the liquid that the second liquid outlet flows out.

Optionally, the oil storage tank dehydration system further comprises a dirty oil recovery device, the dirty oil recovery device comprises a dirty oil recovery pump and a dirty oil recovery floating ball arranged in the dirty oil collection pool, the dirty oil recovery floating ball is provided with a dirty oil recovery cavity, and the density of the dirty oil recovery floating ball is smaller than that of oil in the liquid collected in the dirty oil collection pool, so that the oil in the liquid enters the dirty oil recovery cavity;

the dirty oil recovery pump is used for pumping the oil in the dirty oil recovery cavity into the inner cavity of the oil storage tank.

According to the oil storage tank dehydration system, optionally, the dirty oil recovery floating ball comprises a first floating ball part, a second floating ball part and a third floating ball part which are sequentially arranged from top to bottom, the first floating ball part is of a solid structure, the second floating ball part and the third floating ball part are of a hollow structure, and an inner cavity of the third floating ball part forms the dirty oil recovery cavity;

and the second floating ball part is provided with an oil hole for oil in the sump oil collecting tank to enter, and the oil hole is communicated with the sump oil recovery cavity.

The oil storage tank dehydration system comprises the oil storage tank and the dehydration tank, wherein the first liquid outlet is arranged on the oil storage tank, the liquid inlet and the second liquid outlet are arranged on the dehydration tank, and the liquid inlet is communicated with the first liquid outlet, so that the liquid in the oil storage tank can enter the inner cavity of the dehydration tank; meanwhile, a first valve for opening or closing the second liquid outlet is arranged on the second liquid outlet, and a control device for controlling the first valve to be opened or closed is arranged in the inner cavity of the dewatering tank, so that the first valve can be controlled to open the second liquid outlet to discharge liquid in the inner cavity of the dewatering tank, or the second liquid outlet is closed to stop the discharge of the liquid in the inner cavity of the dewatering tank; specifically, the control device comprises a floating ball component and a switch component, the floating ball component comprises a floating ball, the density of the floating ball is greater than that of oil liquid in the oil storage tank and less than that of water, so that when the liquid entering from the liquid inlet is water, the floating ball can float up under the action of the water, the switch component is triggered to open the first valve, the water in the inner cavity of the dehydration tank can be discharged from the second liquid outlet, the floating ball gradually sinks along with the discharge of the water in the inner cavity of the dehydration tank, the switch component is triggered to close the first valve, the dehydration is stopped, the time for stopping the dehydration can be well controlled, a worker does not need to closely observe the second liquid outlet, the labor intensity of the worker is relieved, and the situation that harmful gas threatens the health of the worker is avoided; in addition, through setting up the blow vent at the top of dewatering tank, make the inner chamber of dewatering tank pass through blow vent and outside atmosphere intercommunication to can keep the pressure stability in the dewatering tank when the liquid in the inner chamber of dewatering tank increases or reduces, improve the security of use moreover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a dehydration system of an oil storage tank according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a dewatering system of an oil storage tank according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a protective sleeve of a dewatering system of an oil storage tank according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a contact switch of a dehydration system of an oil storage tank according to an embodiment of the present invention;

fig. 5 is a schematic structural view of the dirty oil recovery floating ball of the oil storage tank dewatering system according to an embodiment of the present invention.

Description of reference numerals:

1-an oil storage tank; 11-a first liquid outlet;

2-a dehydration tank; 21-liquid inlet;

22-a second liquid outlet; 221-a first valve;

23-a vent; 31-a floating ball;

32-a floating ball guide cylinder; 321-a through hole;

33-a first link; 34-a second link;

35-support points; 36-a steel cord;

37-a protective sheath; 41-switch protection box;

42-contact switch; 421-a first contact;

422-a second contact; 423-contact pick;

51-a first tube section; 52-a second tube section;

521-a second valve; 53-a third tube section;

531-third valve; 6-a moisture detector;

71-a sump oil collecting tank; 72-dirty oil recovery pump;

73-dirty oil recovery floating ball; 731-first float;

732-a second floating ball portion; 7321-oil holes;

733 — third floating ball portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of a dehydration system of an oil storage tank according to an embodiment of the present invention. Fig. 2 is a schematic structural diagram of a dewatering system of an oil storage tank according to an embodiment of the present invention. Fig. 3 is a schematic structural diagram of a protective sleeve of a dewatering system of an oil storage tank according to an embodiment of the present invention. Fig. 4 is a schematic structural diagram of a contact switch of the oil tank dehydration system according to an embodiment of the present invention. Fig. 5 is a schematic structural view of the dirty oil recovery floating ball of the oil storage tank dewatering system according to an embodiment of the present invention. The present embodiments provide an oil tank dehydration system.

This oil storage tank dewatering system includes oil storage tank 1 and dewatering tank 2, and oil storage tank 1 has first liquid outlet 11, and dewatering tank 2 has inlet 21 and second liquid outlet 22, inlet 21 and 11 intercommunications of first liquid outlet to make the liquid in the oil storage tank 1 can flow first liquid outlet 11 and follow inlet 21 and flow into in the dewatering tank 2.

The second liquid outlet 22 is provided with a first valve 221 for opening or closing the second liquid outlet 22, and the inner cavity of the dewatering tank 2 is provided with a control device for controlling the first valve 221 to open or close, specifically, the control device comprises a floating ball assembly and a switch assembly, wherein the floating ball assembly comprises a floating ball 31, the density of the floating ball 31 is greater than that of oil in the oil storage tank 1 and is less than that of water, so that the floating ball 31 floats upwards under the action of liquid entering from the liquid inlet 21 to trigger the switch assembly to open the first valve 221.

The top of the dewatering tank 2 is provided with a vent 23, the inner cavity of the dewatering tank 2 is communicated with the external atmosphere through the vent 23, and when the liquid in the inner cavity of the dewatering tank 2 increases, the gas at the upper part of the inner cavity of the dewatering tank 2 can be discharged from the vent 23, so that the pressure in the inner cavity of the dewatering tank 2 is kept stable; when the liquid in the inner chamber of the dewatering tank 2 is reduced, the external atmosphere can enter from the vent 23 into the inner chamber of the dewatering tank 2 to keep the pressure in the inner chamber of the dewatering tank 2 stable.

In other embodiments, a vent pipe may be connected to the vent 23, and a valve may be disposed on the vent pipe to control the on/off of the vent pipe.

In concrete implementation, water deposited at the bottom of the oil storage tank 1 flows out from the first liquid outlet 11 and flows into the inner cavity of the dewatering tank 2 through the liquid inlet 21, the floating ball 31 in the inner cavity of the dewatering tank 2 can float upwards under the action of the water and trigger the switch assembly to open the first valve 221, namely, the second liquid outlet 22 of the dewatering tank 2 is opened, so that the water entering the inner cavity of the dewatering tank 2 can be discharged from the second liquid outlet 22, along with the progress of dewatering, less and less water enters the inner cavity of the dewatering tank 2 from the oil storage tank 1, more and more oil is obtained, the floating ball 31 in the inner cavity of the dewatering tank 2 gradually sinks and finally triggers the switch assembly to close the first valve 221, namely, the second liquid outlet 22 is closed to stop dewatering, so that the timing of stopping dewatering can be well controlled, and the condition of liquid discharged from the second liquid outlet 22 does not need to be observed in a close distance manually, thereby reducing the labor intensity of workers and avoiding the harm of harmful gas to the health of the workers.

The oil storage tank dehydration system of the embodiment comprises an oil storage tank 1 and a dehydration tank 2, wherein a first liquid outlet 11 is arranged on the oil storage tank 1, a liquid inlet 21 and a second liquid outlet 22 are arranged on the dehydration tank 2, and the liquid inlet 21 is communicated with the first liquid outlet 11, so that liquid in the oil storage tank 1 can enter an inner cavity of the dehydration tank 2; meanwhile, by arranging the first valve 221 for opening or closing the second liquid outlet 22 on the second liquid outlet 22 and arranging the control device for controlling the first valve 221 to open or close in the inner cavity of the dewatering tank 2, the first valve 221 can be controlled to open the second liquid outlet 22 to discharge the liquid in the inner cavity of the dewatering tank 2 or close the second liquid outlet 22 to stop the discharge of the liquid in the inner cavity of the dewatering tank 2; specifically, by arranging the control device to comprise a floating ball assembly and a switch assembly, wherein the floating ball assembly comprises a floating ball 31, and the density of the floating ball 31 is greater than that of oil liquid in the oil storage tank 1 and less than that of water, so that when the liquid entering from the liquid inlet 21 is water, the floating ball 31 can float upwards under the action of the water and trigger the switch assembly to open the first valve 221, so that the water in the inner cavity of the dehydration tank 2 can be discharged from the second liquid outlet 22, and along with the discharge of the water in the inner cavity of the dehydration tank 2, the floating ball 31 gradually sinks and triggers the switch assembly to close the first valve 221 to stop dehydration, thereby well controlling the time for stopping dehydration, avoiding workers from closely observing the second liquid outlet 22, further reducing the labor intensity of the workers and avoiding harmful gas from threatening the health of the workers; in addition, through set up vent 23 at the top of dewatering tank 2, make the inner chamber of dewatering tank 2 pass through vent 23 and outside atmosphere intercommunication to can keep the pressure stability in the inner chamber of dewatering tank 2 when the liquid in the inner chamber of dewatering tank 2 increases or reduces, improve the security of use moreover.

In order to keep the floating and sinking of the floating ball 31 stable and to facilitate better triggering of the switch assembly, a floating ball guide cylinder 32 can be added to the floating ball assembly, and the floating ball guide cylinder 32 is fixed relative to the dewatering tank 2, specifically, the floating ball guide cylinder 32 can be fixedly connected to the inner wall of the dewatering tank 2 through a connecting piece or directly fixedly connected to the inner wall of the dewatering tank 2.

The floating ball 31 is positioned in the floating ball guide cylinder 32, so that the floating ball guide cylinder 32 can play a role in guiding in the floating and sinking processes of the floating ball 31, and a control device comprising a floating ball assembly and a switch assembly can be more reliable; meanwhile, the floating ball guide cylinder 32 is provided with a through hole 321, so that the inner cavity of the floating ball guide cylinder 32 is communicated with the inner cavity of the dewatering tank 2, wherein the size and the number of the through holes 321 can be set according to actual needs, and the details are not repeated here.

Furthermore, the floating ball assembly also comprises a connecting rod structure; the connecting rod structure comprises a first connecting rod 33 and a second connecting rod 34, one end of the first connecting rod 33 is connected to the bottom end of the floating ball 31, the other end of the first connecting rod 33 is rotatably connected with one end of the second connecting rod 34, for example, the first connecting rod can be hinged to the second connecting rod, a trigger is arranged at the other end of the second connecting rod 34, the second connecting rod 34 is connected with the dewatering tank 2 through a supporting point 35, and when the floating ball 31 floats upwards, the second connecting rod 34 can rotate around the supporting point 35 under the driving of the floating ball 31 and the first connecting rod 33, so that the trigger switch assembly of the trigger switch assembly opens the first valve 221.

In concrete implementation, when the amount of water entering the inner cavity of the dewatering tank 2 increases, the floating ball 31 floats upwards and drives the first connecting rod 33, and the first connecting rod 33 drives the second connecting rod 34 to rotate around the supporting point 35, so that the trigger switch assembly on the second connecting rod 34 can open the first valve 221, and the water entering the inner cavity of the dewatering tank 2 is discharged from the second liquid outlet 22; after the water in the inner cavity of the dewatering tank 2 is gradually discharged, the floating ball 31 sinks and drives the first connecting rod 33, and the first connecting rod 33 drives the second connecting rod 34 to rotate around the supporting point 35, so that the trigger component on the second connecting rod 34 triggers the switch component to close the first valve 221, and the second liquid outlet 22 of the dewatering tank 2 is closed and the dewatering is stopped.

The switch assembly may include a switch protection case 41 and a contact switch 42 disposed within the switch protection case 41; wherein, switch protection box 41 can prevent that contact switch 42 from contacting the liquid in the drain sump 2 and corrosion damage, offers the hole of dodging that can supply the trigger piece to pass on the switch protection box 41, triggers the piece and dodges and sets up between the pore wall in hole sealedly to can guarantee switch protection box 41's leakproofness under the condition that does not influence the trigger piece normal play effect, and then improve switch assembly's reliability.

The contact switch 42 includes a valve opening circuit having a first contact 421, a valve closing circuit having a second contact 422, and a contact switch 423, wherein the trigger is used to trigger the contact switch 423 to communicate with the first contact 421 or with the second contact 422, the first valve 221 is opened when the contact switch 423 communicates with the first contact 421, and the first valve 221 is closed when the contact switch 423 communicates with the second contact 422.

In specific implementation, when the floating ball 31 floats upwards to drive the first connecting rod 33 and the second connecting rod 34, the trigger piece trigger contact shifting piece 423 arranged on the second connecting rod 34 is communicated with the first contact 421, at this time, the first valve 221 is opened, and liquid in the dewatering tank 2 can be discharged through the second liquid outlet 22; when the floating ball 31 sinks to drive the first connecting rod 33 and the second connecting rod 34, the trigger piece arranged on the second connecting rod 34 triggers the contact shifting piece 423 to be communicated with the second contact 422, at this time, the first valve 221 is closed, and the liquid in the dewatering tank 2 stops being discharged.

The trigger may include a steel wire rope 36, and the steel wire rope 36 is inserted into the avoiding hole of the switch protection box 41; the top end of the steel wire rope 36 is connected with the second connecting rod 34, and the bottom end of the steel wire rope 36 is connected with the contact shifting piece 423, so that when the floating ball 31 drives the first connecting rod 33 and the second connecting rod 34 to move, the steel wire rope 36 can drive the contact shifting piece 423 to control the opening and closing of the first valve 221, and further control the dewatering to be carried out and stopped.

In addition, in order to prevent the portion of the steel wire rope 36 exposed in the inner cavity of the oil storage tank 1 from being corroded and damaged by the liquid in the oil storage tank 1, a protective sleeve 37 may be sleeved on at least the portion of the steel wire rope 36 exposed outside the switch protection box 41, specifically, the protective sleeve 37 may be sleeved on the whole steel wire rope 36, or the protective sleeve 37 may be sleeved only on the portion of the steel wire rope 36 exposed outside the switch protection box 41; when the protective cover 37 is sleeved on the part of the wire rope 36 exposed outside the switch protection box 41, the part of the wire rope 36 exposed outside the switch protection box 41 can extend or shorten along with the floating and sinking of the floating ball 31, so that the protective cover 37 can be provided with wrinkles, so that the part of the wire rope exposed outside the switch protection box 41 can flexibly extend and shorten.

In other embodiments, the triggering member may also include other objects that can be used to trigger the switch assembly, and will not be described herein.

Specifically, the first liquid outlet 11 and the liquid inlet 21 may be communicated through a dewatering pipe, the dewatering pipe may include a first pipe section 51, a second pipe section 52 and a third pipe section 53, an inlet of the first pipe section 51 is communicated with the first liquid outlet 11, an inlet of the second pipe section 52 and an inlet of the third pipe section 53 are respectively communicated with an outlet of the first pipe section 51, and an outlet of the second pipe section 52 is communicated with the liquid inlet 21.

The second pipe section 52 is provided with a second valve 521, and the second valve 521 is used for opening or closing the liquid inlet 21; the third pipe section 53 is provided with a third valve 531, and the third valve 531 is used for closing the outlet of the third pipe section 53 or communicating the first liquid outlet 11 with the outlet of the third pipe section 53.

The preferred implementation is as follows: by closing the third valve 531 and opening the second valve 521, the liquid in the storage tank 1 flows into the inner cavity of the dewatering tank 2 through the first pipe section 51 and the second pipe section 52, so that the dewatering can be completed in the dewatering tank 2.

Other possible implementations are: by closing the second valve 521 and opening the third valve 531, the liquid in the storage tank 1 will be discharged from the outlet of the third pipe section 53 through the first pipe section 51 and the third pipe section 53, and the dehydrating worker can determine the timing of closing the third valve 531 by observing the liquid discharged from the outlet of the third pipe section 53, thereby also achieving manual dehydration.

In other embodiments, a fourth valve may be provided on the first pipe section 51 to facilitate more reliable control of the opening and closing of the dewatering pipe in the dewatering system of the storage tank.

Further, the oil tank dehydration system of this embodiment may further include a water content detector 6, where the water content detector 6 is configured to detect a water content of the liquid flowing out from the first liquid outlet 11, and the water content detector 6 may be disposed on the dehydration pipe close to the first liquid outlet 11.

One possible implementation manner is to add a main control board to the oil storage tank dehydration system of this embodiment, and report the water content detected by the water content detector 6 to the main control board, and then control the opening and closing of the third valve 531 (the second valve 521 is always in a closed state) by the main control board, for example: when the moisture content detected by the moisture content detector 6 is greater than 30%, the main control board controls the third valve 531 to open, so that the liquid in the storage tank 1 passes through the first pipe section 51 and the third pipe section 53 and is discharged from the outlet of the third pipe section 53; when the water content detected by the water content detector 6 is less than 10%, the main control board controls the third valve 531 to close to stop dehydration, so that dehydration can be realized, and misjudgment during manual dehydration and threat of harmful gas to human bodies are avoided.

Another possible implementation manner is that a main control board may be added to the oil tank dehydration system in this embodiment, and the water content detected by the water content detector 6 is reported to the main control board, and then the main control board controls the opening and closing of the second valve 521 (the third valve 531 is always in a closed state), for example: when the water content detected by the water content detector 6 is more than 30%, the main control board controls the second valve 521 to open so that the liquid in the oil storage tank 1 passes through the first pipe section 51 and the second pipe section 52 and enters the inner cavity of the dewatering tank 2; when the water content that moisture detector 6 detected is less than 10%, main control board control second valve 521 closes to make the liquid in the oil storage tank 1 can not reentry to the inner chamber of dewatering tank 2 in, thereby when utilizing dewatering tank 2 to dewater the fluid in the oil storage tank 1, moisture detector 6 can play auxiliary control's effect to going on and stopping of dewatering.

In order to prevent the direct discharge of the liquid removed by the oil storage tank dehydration system from polluting the environment, a sump oil collecting tank 71 can be additionally arranged in the oil storage tank dehydration system, the second liquid outlet 22 is communicated with the sump oil collecting tank 71, and the sump oil collecting tank 71 is used for collecting the liquid flowing out from the second liquid outlet 22, so that the liquid in the sump oil collecting tank 71 can be treated and then discharged, and the direct discharge can be prevented from polluting the environment.

In other embodiments, the outlets of the second liquid outlet 22 and the third pipe section 53 may be both communicated with the sump 71, so that the liquid discharged from the outlets of the second liquid outlet 22 and the third pipe section 53 flows into the sump 71.

Because the liquid collected in the dirty oil collecting pool 71 also contains a certain amount of oil, a dirty oil recovery device can be additionally arranged in a dehydration system of the oil storage tank, the dirty oil recovery device comprises a dirty oil recovery pump 72 and a dirty oil recovery floating ball 73 arranged in the dirty oil collecting pool 71, wherein the dirty oil recovery floating ball 73 is provided with a dirty oil recovery cavity, and the density of the dirty oil recovery floating ball 73 is smaller than that of the oil in the liquid collected in the dirty oil collecting pool 71, so that the oil in the liquid enters the dirty oil recovery cavity; the dirty oil recovering pump 72 is used for pumping the oil in the dirty oil recovering cavity into the inner cavity of the oil storage tank 1.

During the concrete realization, put into sump oil collecting pit 71 with sump oil recovery floater 73, sump oil recovery floater 73 can float in the fluid of sump oil collecting pit 71, fluid in sump oil collecting pit 71 can enter into the sump oil recovery chamber of sump oil recovery floater 73, sump oil recovery chamber can pass through the entry intercommunication of hose and sump oil recovery pump 72, from not influencing the showy state of sump oil recovery floater 73, simultaneously with the export and the oil storage tank 1 intercommunication of sump oil recovery pump 72, so that sump oil recovery pump 72 can pump the fluid in the sump oil recovery chamber into in the oil storage tank 1.

Specifically, the dirty oil recovery float ball 73 may include a first float part 731, a second float part 732 and a third float part 733 which are sequentially arranged from top to bottom, the first float part 731 is of a solid structure, the second float part 732 and the third float part 733 are of a hollow structure, an inner cavity of the third float part 733 is formed into a dirty oil recovery chamber, an oil hole 7321 which can supply oil in the dirty oil collection tank 71 to enter is formed in the second float part 732, and the oil hole 7321 is communicated with the dirty oil recovery chamber.

The first floating ball portion 731 can remain floating on the liquid surface of the oil, and the second floating ball portion 732 and the third floating ball portion 733 can be submerged into the oil, so that the oil in the dirty oil collecting tank 71 can enter the dirty oil recovery chamber of the third floating ball portion 733 through the oil hole 7321 of the second floating ball portion 732.

In the description of the present invention, it is to be understood that the terms "top," "bottom," "upper," "lower" (if present), and the like, are used in the orientation or positional relationship shown in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The terms "first" and "second" in the description and claims of the present application and the description of the above-described figures are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The oil storage tank dehydration system is characterized by comprising an oil storage tank and a dehydration tank, wherein the oil storage tank is provided with a first liquid outlet, the dehydration tank is provided with a liquid inlet and a second liquid outlet, the liquid inlet is communicated with the first liquid outlet, and the second liquid outlet is provided with a first valve for opening or closing the second liquid outlet;

a control device for controlling the first valve to be opened or closed is arranged in an inner cavity of the dewatering tank, the control device comprises a floating ball assembly and a switch assembly, the floating ball assembly comprises a floating ball, and the floating ball can float upwards under the action of liquid entering from the liquid inlet so as to trigger the switch assembly to open the first valve; the density of the floating ball is greater than that of oil in the oil storage tank and less than that of water;

the top of the dehydration tank is provided with a vent hole, and the inner cavity of the dehydration tank is communicated with the external atmosphere through the vent hole.

2. The dehydration system according to claim 1, wherein said float assembly further comprises a float guide cylinder fixed relative to said dehydration tank;

the floating ball is positioned in the floating ball guide cylinder, and the floating ball guide cylinder is provided with a through hole so as to communicate the inner cavity of the floating ball guide cylinder with the inner cavity of the dehydration tank.

3. The storage tank dewatering system of claim 2, wherein the float ball assembly further comprises a linkage arrangement;

the connecting rod structure comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the bottom end of the floating ball, the other end of the first connecting rod is rotatably connected with one end of the second connecting rod, a trigger is arranged at the other end of the second connecting rod, the second connecting rod is connected with the dewatering tank through a supporting point, and when the floating ball floats upwards, the second connecting rod can rotate around the supporting point under the driving of the floating ball and the first connecting rod, so that the trigger triggers the switch assembly to open the first valve.

4. The storage tank dewatering system of claim 3, wherein the switch assembly includes a switch protection box and a contact switch disposed within the switch protection box;

an avoidance hole for the trigger piece to pass through is formed in the switch protection box, and the trigger piece and the wall of the avoidance hole are arranged in a sealing mode;

the contact switch is provided with a valve opening loop, a valve closing loop and a contact shifting piece, the valve opening loop is provided with a first contact, the valve closing loop is provided with a second contact, the trigger piece is used for triggering the contact shifting piece to be communicated with the first contact or the second contact, the first valve is opened when the contact shifting piece is communicated with the first contact, and the first valve is closed when the contact switch is communicated with the second contact.

5. The storage tank dewatering system of claim 4, wherein the trigger comprises a wire rope threaded through the relief hole; the top end of the steel wire rope is connected with the second connecting rod, and the bottom end of the steel wire rope is connected with the contact shifting piece;

and at least the part of the steel wire rope exposed outside the switch protection box is also sleeved with a protective sleeve.

6. The storage tank dewatering system of claim 1, wherein the first liquid outlet is in communication with the liquid inlet via a dewatering tube;

the dewatering pipe comprises a first pipe section, a second pipe section and a third pipe section, wherein the inlet of the first pipe section is communicated with the first liquid outlet, the inlet of the second pipe section and the inlet of the third pipe section are respectively communicated with the outlet of the first pipe section, and the outlet of the second pipe section is communicated with the liquid inlet;

the second pipe section is provided with a second valve, and the second valve is used for opening or closing the liquid inlet;

and a third valve is arranged on the third pipe section and used for closing the outlet of the third pipe section or communicating the first liquid outlet with the outlet of the third pipe section.

7. The dehydration system according to any one of claims 1 to 6, further comprising a water content detector for detecting the water content of the liquid flowing out from said first liquid outlet;

the moisture detector is arranged close to the first liquid outlet.

8. The oil tank dewatering system according to any one of claims 1 to 6, further comprising a sump oil collection tank, the second liquid outlet communicating with the sump oil collection tank, the sump oil collection tank being configured to collect liquid flowing from the second liquid outlet.

9. The oil tank dewatering system according to claim 8, further comprising a sump oil recovery device comprising a sump oil recovery pump and a sump oil recovery float ball disposed in the sump oil collection basin, the sump oil recovery float ball having a sump oil recovery chamber, the sump oil recovery float ball having a density less than a density of oil in the liquid collected in the sump oil collection basin such that the oil in the liquid enters the sump oil recovery chamber;

the dirty oil recovery pump is used for pumping the oil in the dirty oil recovery cavity into the inner cavity of the oil storage tank.

10. The oil storage tank dewatering system according to claim 9, wherein the dirty oil recovery float comprises a first float part, a second float part and a third float part which are arranged in sequence from top to bottom, the first float part is of a solid structure, the second float part and the third float part are of a hollow structure, and an inner cavity of the third float part is formed into the dirty oil recovery cavity;

and the second floating ball part is provided with an oil hole for oil in the sump oil collecting tank to enter, and the oil hole is communicated with the sump oil recovery cavity.

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