CN110406832B - Built-in bottom filling anti-overflow control device for oil tank filling - Google Patents
Built-in bottom filling anti-overflow control device for oil tank filling Download PDFInfo
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- CN110406832B CN110406832B CN201910706712.8A CN201910706712A CN110406832B CN 110406832 B CN110406832 B CN 110406832B CN 201910706712 A CN201910706712 A CN 201910706712A CN 110406832 B CN110406832 B CN 110406832B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
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Abstract
The invention relates to a built-in bottom filling anti-overflow control device for oil tank filling, which comprises: the hydraulic control main valve is arranged in an inlet pipeline oil tank at the bottom of the oil tank, the float guide valve is arranged at the top of the oil tank and is communicated with the hydraulic control main valve through the connecting pipe, the hydraulic control main valve realizes the opening and closing of the valve through the pressure difference between an inlet and an outlet, and when the liquid level is lower than a set height, the float guide valve is opened, and the hydraulic control main valve is automatically opened under the action of the pressure difference; when the liquid level reaches the set height, the float floats to close the float pilot valve, the hydraulic control main valve is automatically closed, namely the hydraulic control main valve realizes pilot control through the float pilot valve, and when the oil in the oil tank reaches the set volume height, the float pilot valve is closed to further control the hydraulic control main valve to be closed, so that oil overflow of the oil tank is prevented.
Description
Technical Field
The invention belongs to the field of oil tank trucks, and particularly relates to the technical field of anti-overflow control of oil tank trucks.
Background
When the oil tank is filled with oil from the bottom, if nobody can observe the rising condition of the liquid level in the tank by opening the small manhole cover when the oil tank is lifted to the top of the tank, the accident of roof fall and oil overflow can easily occur, the operation safety is seriously influenced, and the environment is polluted.
The built-in bottom filling anti-overflow control device is arranged on a tank pipeline at the bottom of the oil tank and the top of the oil tank, and can automatically close a valve and cut off an oil inlet pipeline when the oil tank is full, so that loss and potential safety hazards caused by overflow of oil in the oil tank are prevented.
Disclosure of Invention
The present invention is directed to solving the above problems of the prior art. The built-in bottom filling anti-overflow control device for oil tank filling is capable of preventing loss and potential safety hazards caused by oil material overflow in the oil tank. The technical scheme of the invention is as follows:
a built-in bottom-fill spill control device for tank filling, comprising: the hydraulic control main valve is arranged in an inlet pipeline oil tank at the bottom of the oil tank, the float guide valve is arranged at the top of the oil tank and is communicated with the hydraulic control main valve through the connecting pipe, the hydraulic control main valve is used for controlling opening and closing of an inlet pipeline at the bottom of the oil tank, and the float guide valve is used for controlling opening and closing of the hydraulic control main valve; the pilot-controlled main valve realizes the opening and closing of the valve through the pressure difference of the inlet and the outlet, when the liquid level is lower than the set height, the float pilot valve is opened, and the pilot-controlled main valve is automatically opened under the action of the pressure difference; when the liquid level reaches a set height, the floater floats to close the floater pilot valve, the hydraulic control main valve is automatically closed, namely the hydraulic control main valve realizes pilot control through the floater pilot valve, and when the oil in the oil tank reaches the set volume height, the floater pilot valve is closed to further control the hydraulic control main valve to be closed, so that oil overflow of the oil tank is prevented;
the hydraulic control main valve comprises a main valve body, a first spring, a rectifying cover, a sealing ring, a valve core, a guide cylinder, a pressure taking plug screw, a sealing pressing ring, a main sealing ring, a flange and a pipe joint, wherein the guide cylinder is arranged in an inner cavity of the valve body;
the oil acts on the valve core at the port A of the hydraulic control main valve, the valve core moves leftwards under the action of oil pressure, the oil enters the cavity B through the port A of the hydraulic control main valve, the oil flows out from the port D, meanwhile, the oil enters the cavity C through the pressure taking screw plug throttling hole E, flows out from the pressure taking screw plug throttling hole E through the hole channel G and enters the float guide valve through the connecting pipe; when the oil pressure is low, the float guide valve is in an open state, the oil flow entering and exiting the cavity C is completely flowed out from the pressure taking screw plug orifice E, the oil flow of the cavity C is in a balanced state, and the valve core is opened to feed oil under the action of oil pressure; when the control liquid level is reached, the float guide valve is closed, the closing pressure of the oil outlet of the cavity C is raised to be the same as the oil inlet pressure, and the valve core is closed under the combined action of the oil pressure of the cavity C and the spring force to stop oil inlet.
Furthermore, the float pilot valve comprises a float, a pilot valve body, a valve rod, a valve clack, a second spring, a valve seat, a connecting pipe, a connecting flange and a second pipe joint, wherein the float is connected with the valve rod, the pilot valve body is connected with the connecting flange through the connecting pipe, the valve rod is connected with the pilot valve body, the valve clack is connected with the valve rod, the second spring is connected with the valve clack, the valve seat is connected with the pilot valve body, the connecting pipe is connected with the connecting flange, and the second pipe joint is connected with the connecting pipe.
Furthermore, oil flowing out of an F port of the pilot-controlled main valve enters an H port of the float pilot valve through a connecting pipe and flows out of a K port of the float pilot valve, when the oil is at a low liquid level, the float of the float pilot valve is at a low position, the float drives the valve clack to be at an opening position through the valve rod, so that the valve clack is communicated with a channel of the valve seat, the oil enters from the H port of the float pilot valve and flows out of the K port of the float pilot valve, the pilot-controlled main valve is in an opening state, when the control liquid level is reached, the float drives the valve clack to rotate to a closing position through the valve rod, so that the channel of the valve clack and the valve seat is closed, the oil entering the H port of the float pilot valve cannot flow, and the pilot-controlled main valve is closed.
The invention has the following advantages and beneficial effects:
the built-in type bottom filling anti-overflow control device adopts a full mechanical control technology to control the opening and closing of the main valve, and has higher reliability and explosion-proof grade.
The built-in bottom filling anti-overflow control device is arranged inside the oil tank, so that the design of a bottom pipeline is simpler.
The hydraulic control main valve adopts a balanced valve core structure, utilizes differential pressure to control the action of the valve core, has small opening pressure and stable opening and closing action.
The connecting pipe of the float guide valve adopts an adjustable structure, and the liquid level control height can be conveniently set by adjusting the installation position of the float guide valve.
Drawings
FIG. 1 is a schematic diagram of a built-in bottom-fill overfill control device for tank filling according to the preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a pilot operated main valve;
FIG. 3 is a schematic view of a float pilot valve configuration;
Detailed Description
The technical solutions in the embodiments of the present invention will be described in detail and clearly with reference to the accompanying drawings. The described embodiments are only some of the embodiments of the present invention.
The technical scheme for solving the technical problems is as follows:
1. structural composition and working principle
The bottom filling anti-overflow control device consists of a pilot-controlled main valve, a float pilot valve and a connecting pipe, as shown in figure 1. The hydraulic control main valve is arranged in an inlet pipeline oil tank at the bottom of the oil tank, the floater guide valve is arranged at the top of the oil tank, and the floater guide valve is communicated with the hydraulic control main valve through a connecting pipe.
(1) Hydraulic control main valve
The hydraulic control main valve comprises a rectifying cover, a guide cylinder, a main sealing ring, a sealing pressure ring, a pressure tapping screw plug, a valve body, a spring, a valve core, a flange, a sealing ring, a pipe joint and the like. The structure and control principle are shown in fig. 2.
The pilot-controlled main valve 1 comprises a main valve body 11, a first spring 12, a rectifying cover 13, a sealing ring 14, a valve core 15, a guide cylinder 16, a pressure tapping screw plug 17, a sealing pressing ring 18, a main sealing ring 19, a flange 110 and a pipe joint 111, wherein the guide cylinder 16 is arranged in an inner cavity of the valve body 11, the valve core 15 is arranged in the guide cylinder 16, the sealing ring 14 is arranged between the valve body 11 and the guide cylinder 16 and is connected with the valve core 15, the spring 12 is arranged between the inner cavity of the valve body 11 and the valve core 15, the rectifying cover 13 is arranged outside the valve body 11, the pressure tapping screw plug 17 is arranged at the front end of the valve core 15, the sealing pressing ring 18 is arranged in an inner cavity of an opening end of the valve body 11, the main sealing ring 19 is arranged between the sealing pressing ring 18 and the flange 110, the flange 110 is arranged at the opening end of the valve body 11, and the pipe joint 111 is arranged at a pressure tapping port of the flange 110.
The main valve body 11 is used for connecting and supporting various parts, the first spring 12 is used for resetting the valve core 15, the rectifying cover 13 is used for reducing the impact of fluid flowing out of the opening of the valve body 11D, the sealing ring 14 is used for radially sealing the valve core 15, the valve core 15 is used for opening and closing the main valve, the guide cylinder 16 is used for supporting the valve core 15, the pressure tapping screw plug 17 is used for adjusting the size of the pressure tapping opening E, the sealing press ring 18 is used for fixing the main sealing ring 19, the main sealing ring 19 is used for forming main valve sealing with the valve core 15, the flange 110 is used for installing and fixing the main valve, and the pipe joint 111 is used for connecting the float guide valve 2 through the connecting pipe 3.
The oil acts on the valve core 5 at the port A of the hydraulic control main valve, under the action of oil pressure, the valve core 5 moves leftwards, the oil enters the cavity B through the port A of the hydraulic control main valve, and the oil flows out from the port D. Meanwhile, oil enters the cavity C through the throttling hole E of the pressure taking screw plug, flows out of the connector E through the hole channel G and enters the float guide valve through the connecting pipe. When the liquid level is low, the float guide valve is in an opening state, the oil flow entering and exiting the cavity C flows out from the interface E, the oil flow of the cavity C is in a balanced state, and the valve core 5 is opened to enter oil under the action of oil pressure; when the control liquid level is reached, the float guide valve is closed, the closing pressure of the oil outlet of the C cavity is raised to be the same as the oil inlet pressure, and the valve core is closed under the combined action of the oil pressure of the C cavity and the spring force to stop oil inlet.
2 float pilot valve
The float pilot valve comprises a valve body, a valve seat, a valve clack, a valve rod, a spring, a float, a connecting pipe, a connecting flange, a pipe joint and the like, and the structure is shown in figure 3. The hydraulic control main valve is controlled to control an oil way mainly according to the set liquid level.
Further, the float pilot valve 2 comprises a float 21, a pilot valve body 22, a valve rod 23, a valve clack 24, a second spring 25, a valve seat 26, a connecting pipe 27, a connecting flange 28 and a second pipe joint 29, wherein the float 21 is connected with the valve rod 23, the pilot valve body 22 is connected with the connecting flange 28 through the connecting pipe 27, the valve rod 23 is connected with the pilot valve body 22, the valve clack 24 is connected with the valve rod 23, the second spring 25 is connected with the valve clack 24, the valve seat 26 is connected with the pilot valve body 22, the connecting pipe 27 is connected with the connecting flange 28, and the second pipe joint 29 is connected with the connecting pipe 27.
The float 21 is used for driving the valve clack 24 to rotate through the valve rod 23, the pilot valve body 22 is connected with and supports various parts, the valve rod 23 is used for connecting the float 21 and the valve clack 24, the valve clack 24 is used for being matched with the valve seat 6 to control the opening and closing of the float pilot valve, the second spring 25 is used for pressing the valve clack 24 against the valve seat 26, the valve seat 26 is used for being matched with the valve clack 24 to control the opening and closing of the float pilot valve, the connecting pipe 27 is used for connecting the second pipe joint 29 with the valve body, the connecting flange 28 is used for installing and fixing the float pilot valve, and the second pipe joint 29 is used for being connected with the pilot-controlled main valve 1 through the connecting pipe 3.
The oil flowing out of the port F of the pilot-controlled main valve enters the port H of the float pilot valve through the connecting pipe and flows out of the port K of the float pilot valve. When the liquid level is low, the float 1 of the float pilot valve is at a low level, the float 1 drives the valve clack 4 to be at an opening position through the valve rod 3, so that the valve clack 4 is communicated with the channel of the valve seat 6, oil enters from the opening H of the float pilot valve and flows out from the opening K of the float pilot valve, and the pilot main valve is in an opening state. When the control liquid level is reached, the float 1 drives the valve clack 4 to rotate to the closing position through the valve rod 3, so that the passage of the valve clack 4 and the valve seat 6 is closed, oil entering the float pilot valve H cannot flow, and the pilot main valve is closed.
The hydraulic control main valve is arranged at the inlet of the oil tank, the floater guide valve is arranged at the top of the oil tank, and the floater guide valve is communicated with the hydraulic control main valve through a connecting pipe. The pilot-controlled main valve realizes the opening and closing of the valve through the pressure difference between the inlet and the outlet. When the liquid level is lower than the set height, the float pilot valve is opened, and the hydraulic control main valve is automatically opened under the action of differential pressure; when the liquid level reaches the set height, the float floats to close the float pilot valve, and the pilot valve is automatically closed. The pilot control main valve realizes pilot control through the float pilot valve, and when the oil in the oil tank reaches a set volume height, the float pilot valve is closed to control the pilot control main valve to be closed, so that oil spilling of the oil tank is prevented.
2. Technical innovation
The technical innovation of the invention mainly comprises:
(1) the built-in bottom filling anti-overflow control device adopts a full-mechanical control technology to control the opening and closing of the main valve, and has higher reliability and explosion-proof grade.
(2) The built-in bottom filling anti-overflow control device is arranged inside the oil tank, so that the design of a bottom pipeline is simpler.
(3) The hydraulic control main valve adopts a balanced valve core structure, utilizes differential pressure to control the action of the valve core, has small opening pressure and stable opening and closing action.
(4) The connecting pipe of the float guide valve adopts an adjustable structure, and the liquid level control height can be conveniently set by adjusting the installation position of the float guide valve.
The above examples are to be construed as merely illustrative and not limitative of the remainder of the disclosure. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.
Claims (3)
1. A built-in bottom-fill spill-proof control device for tank filling, comprising: the oil tank comprises a hydraulic control main valve (1), a floater pilot valve (2) and a connecting pipe (3), wherein the hydraulic control main valve (1) is arranged in an inlet pipeline oil tank at the bottom of the oil tank, the floater pilot valve (2) is arranged at the top of the oil tank, the floater pilot valve (2) is communicated with the hydraulic control main valve (1) through the connecting pipe (3), the hydraulic control main valve (1) is used for controlling the opening and closing of an inlet pipeline at the bottom of the oil tank, and the floater pilot valve (2) is used for controlling the opening and closing of the hydraulic control main valve (1); the pilot-controlled main valve (1) realizes the opening and closing of the valve through the pressure difference of an inlet and an outlet, when the liquid level is lower than the set height, the float pilot valve (2) is opened, and the pilot-controlled main valve (1) is automatically opened under the action of the pressure difference; when the liquid level reaches a set height, the floater floats to close the floater pilot valve (2), the hydraulic control main valve (1) is automatically closed, namely the hydraulic control main valve (1) realizes pilot control through the floater pilot valve (2), and when the oil in the oil tank reaches the set volume height, the floater pilot valve (2) is closed to further control the hydraulic control main valve (1) to be closed, so that oil overflow of the oil tank is prevented;
the hydraulic control main valve (1) comprises a main valve body (11), a first spring (12), a rectifying cover (13), a sealing ring (14), a valve core (15), a guide cylinder (16), a pressure taking screw plug (17), a sealing press ring (18), a main sealing ring (19), a flange (110) and a pipe joint (111), wherein the guide cylinder (16) is arranged in an inner cavity of the valve body (11), the valve core (15) is arranged in the guide cylinder (16), the sealing ring (14) is arranged between the valve body (11) and the guide cylinder (16) and is connected with the valve core (15), the spring (12) is arranged between the inner cavity of the valve body (11) and the valve core (15) and is used for resetting the valve core (15), the rectifying cover (13) is arranged outside the valve body (11) and is used for reducing the impact of fluid flowing out from a D port of the valve body (11), the pressure taking screw plug (17) is arranged at the front end of the valve core (15), and the sealing press ring (18) is arranged in an inner cavity of an opening end of the valve body (11), the main sealing ring (19) is arranged between the sealing compression ring (18) and the flange (110), the flange (110) is arranged at the opening end of the valve body (11), and the pipe joint (111) is arranged at a pressure taking port of the flange (110);
oil acts on a valve core (15) at an opening A of a hydraulic control main valve (1), under the action of oil pressure, the valve core (15) moves leftwards, the oil enters a cavity B through the opening A of the hydraulic control main valve (1), the oil flows out from an opening D, meanwhile, the oil enters a cavity C through a pressure taking screw plug throttling hole (E), flows out from the pressure taking screw plug throttling hole (E) through a hole G, and enters a float guide valve (2) through a connecting pipe; when the oil pressure is low, the float guide valve (2) is in an open state, the oil flow entering and exiting the C cavity is totally discharged from the throttling hole (E) of the pressure tapping screw plug, the oil flow of the C cavity is in a balanced state, and the valve core (15) is opened to feed oil under the action of oil pressure; when the control liquid level is reached, the float guide valve is closed, the closing pressure of the oil outlet of the C cavity is raised to be the same as the oil inlet pressure, the valve core is closed under the combined action of the oil pressure and the spring force of the C cavity, and the oil inlet is stopped.
2. The built-in bottom-fill overfill prevention control device for tank filling of claim 1, it is characterized in that the float pilot valve (2) comprises a float (21), a pilot valve body (22), a valve rod (23), a valve clack (24), a second spring (25), a valve seat (26), a connecting pipe (27), a connecting flange (28) and a second pipe joint (29), the float (21) is connected with the valve rod (23), the pilot valve body (22) is connected with the connecting flange (28) through the connecting pipe (27), the valve rod (23) is connected with the pilot valve body (22), the valve clack (24) is connected with the valve rod (23), the second spring (25) is connected with the valve clack (24), the valve seat (26) is connected with the pilot valve body (22), the connecting pipe (27) is connected with the connecting flange (28), and the second pipe joint (29) is connected with the connecting pipe (27).
3. The built-in bottom filling anti-overflow control device for the tank filling according to claim 2, characterized in that the oil flowing out from the F port of the pilot-controlled main valve (1) enters the H port of the float pilot valve (2) through the connecting pipe and flows out from the K port of the float pilot valve (2), when the oil is in low level, the float (21) of the float pilot valve (2) is in low level, the float (21) drives the valve flap (24) to be in open position through the valve rod (23), so that the valve flap (24) is communicated with the channel of the valve seat (26), the oil enters from the H port of the float pilot valve and flows out from the K port of the float pilot valve (2), the pilot-controlled main valve (1) is in open state, when the pilot level is reached, the float (21) drives the valve flap (24) to be in closed position through the valve rod (23), so that the channel of the valve flap (24) and the valve seat (26) is closed, the oil entering the H port of the float pilot valve (2) can not flow, the pilot-controlled main valve (1) is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910706712.8A CN110406832B (en) | 2019-08-01 | 2019-08-01 | Built-in bottom filling anti-overflow control device for oil tank filling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910706712.8A CN110406832B (en) | 2019-08-01 | 2019-08-01 | Built-in bottom filling anti-overflow control device for oil tank filling |
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| Publication Number | Publication Date |
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| CN110406832A CN110406832A (en) | 2019-11-05 |
| CN110406832B true CN110406832B (en) | 2021-08-17 |
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| CN201910706712.8A Active CN110406832B (en) | 2019-08-01 | 2019-08-01 | Built-in bottom filling anti-overflow control device for oil tank filling |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112303248B (en) * | 2020-10-29 | 2023-03-21 | 四川科宏石油天然气工程有限公司 | Float pilot-operated drain valve |
| CN115231728B (en) * | 2022-06-13 | 2022-12-23 | 福建省龙德新能源有限公司 | Be used for phosphorus pentafluoride preparation waste liquid to retrieve device of recycling |
| CN115199808B (en) * | 2022-07-07 | 2024-06-11 | 重庆川庆科技发展有限公司 | Pressure flow automatic control valve with high liquid level control function |
| CN115557570A (en) * | 2022-09-27 | 2023-01-03 | 重庆川庆科技发展有限公司 | Float type oil-water separator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2209346Y (en) * | 1994-11-17 | 1995-10-04 | 贺明 | Overflow-proof self-sealing system |
| CN201507029U (en) * | 2009-07-21 | 2010-06-16 | 中国石化集团胜利石油管理局滨南社区管理中心 | Fecal suction truck anti-overflow tank device |
| CN202193359U (en) * | 2011-06-03 | 2012-04-18 | 向天华 | Manhole cover of vehicular petroleum tank with breather valve |
| US20140124068A1 (en) * | 2012-11-02 | 2014-05-08 | Fluor Technologies Corporation | Tank overflow pipe system |
| US9163973B2 (en) * | 2012-12-21 | 2015-10-20 | Rosemount Tank Radar Ab | Identifying undesired conditions in the function of a floating roof of a tank |
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