CN213801252U

CN213801252U - Device for indirectly measuring liquid level of asphalt storage tank by using anthracene oil

Info

Publication number: CN213801252U
Application number: CN202022300264.2U
Authority: CN
Inventors: 廖志强; 单春华
Original assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Current assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-07-27
Anticipated expiration: 2030-10-15

Abstract

The utility model relates to an utilize indirect device that measures pitch storage tank liquid level of anthracene oil, including connecting pipe, detection diaphragm capsule, capillary, pressure transmitter, trip valve A, discharge valve, blowoff valve, anthracene oil pipe, trip valve B, current-limiting orifice plate, trip valve C and electric tracing band. The beneficial effects are as follows: anthracene oil pipe is connected to nearly detection diaphragm capsule end on the connecting pipe between the pitch level gauge mouth of pitch storage tank and the detection diaphragm capsule, continuously mends anthracene oil to the connecting pipe through anthracene oil pipe, is full of anthracene oil in the connecting pipe before making the detection diaphragm capsule all the time to avoid detecting diaphragm capsule and pitch direct contact, through anthracene oil indirect measurement pitch liquid level, can solve the detection diaphragm capsule and blockked up the problem that coking damage pressure transmitter even by pitch, eliminated the potential safety hazard, reduced equipment failure rate, improved the production operation rate.

Description

Device for indirectly measuring liquid level of asphalt storage tank by using anthracene oil

Technical Field

The utility model relates to a coal tar chemical industry technical field especially relates to an utilize device of anthracene oil indirect measurement pitch storage tank liquid level.

Background

The storage and transportation modes of the medium-temperature asphalt or modified asphalt produced by the tar deep processing enterprises mainly comprise two modes, one mode is to store and transport the solid asphalt generated by asphalt forming, and the other mode is to store and transport the solid asphalt directly through liquid asphalt. When the liquid asphalt is produced, stored and transported, the conventional liquid level meter is difficult to adapt to the severe measuring environment due to the characteristics of high temperature, high viscosity, easy adhesion and easy coking. At present, common liquid level meters used for asphalt measurement, such as a radar liquid level meter, a floating ball liquid level meter, a differential pressure liquid level meter and the like, have frequent faults in use, and bring great inconvenience and potential safety hazards to the production, storage and transportation of asphalt.

The radar liquid level meter is not in direct contact with asphalt liquid, the probability of failure of the liquid level meter is very low, however, asphalt oil gas escaping from the top of the storage tank is condensed and then covers the antenna of the radar liquid level meter, the radar liquid level meter is often distorted, the radar liquid level meter can only be manually disassembled to wipe and clean the antenna, but the method for wiping the antenna is not a permanent cure, and the radar antenna can be quickly covered by the asphalt oil gas.

The floating ball liquid level scores are two types: one is composed of a floating ball, an inserting rod, a meter head and the like, wherein the floating ball is sleeved outside the fixed inserting rod and moves up and down along with the change of the asphalt liquid level, and the floating ball and the inserting rod are easy to coke and are blocked because of being soaked in the asphalt liquid for a long time; the other is that the floating ball is fixed with the floating rod, the floating ball drives the floating rod to move up and down together, the liquid level meter has the problem that the floating rod is shaken and clamped, and asphalt oil gas escaping from the top of the storage tank can be condensed in a gap between a cylinder body of the liquid level meter and the floating rod when asphalt is measured, so that the floating rod is easy to clamp and fails.

The pressure difference liquid level meter adopts the static pressure measuring principle and converts the measured static pressure to obtain the height of the asphalt liquid level. Because the detection diaphragm capsule of pressure transmitter and pitch liquid direct contact, be very easily blockked up by pitch and even coking damage pressure transmitter to cause the trouble frequent occurrence.

SUMMERY OF THE UTILITY MODEL

For overcoming the prior art defect, the utility model provides a technical problem provide an utilize device of anthracene oil indirect measurement pitch storage tank liquid level, nearly detect diaphragm capsule termination income anthracene oil pipe on the pitch level gauge mouth of pitch storage tank and the connecting pipe between the detection diaphragm capsule, continuously mend anthracene oil to the connecting pipe through anthracene oil pipe, it is full of anthracene oil all the time in the connecting pipe before the messenger detects the diaphragm capsule, thereby avoid detecting diaphragm capsule and pitch direct contact, through anthracene oil indirect measurement pitch liquid level, can solve the problem that detects the diaphragm capsule and is blockked up coking damage pressure transmitter even by the pitch, the potential safety hazard has been eliminated, the equipment failure rate has been reduced, the production operation rate has been improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a device for indirectly measuring the liquid level of an asphalt storage tank by using anthracene oil comprises a connecting pipe, a detection diaphragm capsule, a capillary, a pressure transmitter, a stop valve A, an exhaust valve, a blow-down valve, an anthracene oil pipe, a stop valve B, a flow-limiting pore plate, a stop valve C and an electric tracing band, and is characterized in that the connecting pipe is a U-shaped pipe, one end of the connecting pipe is connected with an asphalt liquid level meter port arranged on the asphalt storage tank through the stop valve A, and the other end of the connecting pipe is connected with the detection diaphragm capsule; the two exhaust valves are respectively arranged on the horizontal section of the U-shaped pipe of the connecting pipe; the blowoff valve is arranged at the bottom of the U-shaped pipe of the connecting pipe; the pressure transmitter is connected with the detection diaphragm box through a capillary filled with silicone oil; the anthracene oil pipe is connected with a cut-off valve B and a flow-limiting pore plate in series, and is connected with a cut-off valve C in parallel and then is connected to a connecting pipe in front of the detection diaphragm box; the electric tracing band is arranged on the connecting pipe.

The U-shaped pipe of the connecting pipe is vertically arranged downwards, and the height of the horizontal sections at the two ends is the same.

The device for indirectly measuring the liquid level of the asphalt storage tank by using anthracene oil comprises the following steps:

1) before use, closing a cut-off valve A at the opening of the asphalt liquid level meter, and controlling the temperature of the connecting pipe to be 80-100 ℃ through heat preservation of an electric tracing band;

2) opening an exhaust valve on the connecting pipe, opening a cut-off valve C on the anthracene oil pipe, injecting anthracene oil into the connecting pipe, and closing the exhaust valve and the cut-off valve C after the connecting pipe is filled with anthracene oil;

3) opening a cut-off valve B on the anthracene oil pipe, opening a cut-off valve A at the opening of the asphalt liquid level meter, continuously supplementing anthracene oil into a connecting pipe through a flow-limiting pore plate, and controlling the feed amount of the anthracene oil to be 5-10L/h;

4) anthracene oil is continuously supplemented into the connecting pipe, flows slowly from top to bottom and then from bottom to top, and enters the asphalt storage tank through the cut-off valve A and the opening of the asphalt liquid level meter;

5) because the heights of the horizontal sections at the front end and the rear end of the U-shaped connecting pipe are the same, and the flowing speed of anthracene oil in the connecting pipe is extremely slow, the pressure drop loss is almost zero, namely the pressures of the horizontal sections at the front end and the rear end of the U-shaped connecting pipe are the same, so that the pressure of the anthracene oil at the horizontal section at the rear end of the connecting pipe is measured, namely the pressure of the horizontal section at the front end is indirectly measured, and then the liquid level height of the asphalt storage tank can be calculated by a formula H-P/rho g, wherein H is the liquid level height of the asphalt storage tank, P is the pressure at the detection diaphragm box, rho is the asphalt density, g is the gravity acceleration.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the U-shaped connecting pipe is arranged between the opening of the asphalt liquid level meter and the detection diaphragm capsule, anthracene oil is continuously replenished into the connecting pipe, flows from top to bottom and then slowly flows from bottom to top, and then enters the asphalt storage tank through the opening of the asphalt liquid level meter, so that the connecting pipe is filled with anthracene oil all the time, the asphalt is prevented from being directly contacted with the detection diaphragm capsule, and even if a small amount of asphalt enters the horizontal pipe at the front end close to the opening of the asphalt liquid level meter, the anthracene oil continuously replenished into the horizontal pipe can be diluted and is brought back to the asphalt storage tank;

2) the electric tracing band is adopted for heat preservation, the temperature of the connecting pipe is controlled to be 80-100 ℃, anthracene oil has good fluidity at the temperature and is not easy to coke, and the detection diaphragm capsule can be ensured to be normally used for a long time;

3) as the anthracene oil is one of the components in the asphalt, even a small amount of anthracene oil enters the asphalt storage tank, the quality of the asphalt product is not influenced;

4) the problem that the pressure transmitter is damaged by the blockage of the detection diaphragm capsule by asphalt and even coking is solved, the potential safety hazard is eliminated, the equipment failure rate is reduced, and the production operation rate is improved.

Drawings

Fig. 1 is a schematic view of the structural principle of the present invention.

In the figure: 1-connecting pipe 2-detection diaphragm capsule 3-capillary 4-pressure transmitter 5-cut-off valve A6-exhaust valve 7-blowoff valve 8-anthracene oil pipe 9-cut-off valve B10-flow-limiting orifice plate 11-cut-off valve C12-electric tracing band

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

the utility model relates to a device for indirectly measuring the liquid level of an asphalt storage tank by using anthracene oil, which comprises a connecting pipe 1, a detection diaphragm capsule 2, a capillary 3, a pressure transmitter 4, a stop valve A5, an exhaust valve 6, a blow-off valve 7, an anthracene oil pipe 8, a stop valve B9, a flow-limiting pore plate 10, a stop valve C11 and an electric tracing band 12, wherein the connecting pipe 1 is a U-shaped pipe, one end of the connecting pipe is connected with an asphalt liquid level meter port arranged on the asphalt storage tank by the stop valve A5, and the other end of the connecting pipe is connected with the detection diaphragm capsule 2; the two exhaust valves 6 are respectively arranged on the horizontal section of the U-shaped pipe of the connecting pipe 1; the blowoff valve 7 is arranged at the bottom of the U-shaped pipe of the connecting pipe 1; the pressure transmitter 4 is connected with the detection diaphragm capsule 2 through a capillary 3 filled with silicone oil; the anthracene oil pipe 8 is connected with a cut-off valve B9 and a flow-limiting pore plate 10 (used for controlling the feeding amount of anthracene oil) in series, and is connected with a cut-off valve C11 in parallel and then is connected to a connecting pipe 1 in front of the detection diaphragm capsule 2; the electric tracing band 12 is provided on the connection pipe 1 to automatically control the temperature of the connection pipe 1.

The U-shaped pipe of the connecting pipe 1 is vertically arranged downwards, and the height of the horizontal sections at the two ends is the same.

1) before use, a cut-off valve A5 at the opening of the asphalt liquid level meter is closed, and the temperature of the connecting pipe 1 is kept at 80-100 ℃ by the electric tracing band 12;

2) opening the exhaust valve 6 on the connecting pipe 1, opening the cut-off valve C11 on the anthracene oil pipe 8, injecting anthracene oil into the connecting pipe 1, and closing the exhaust valve 6 and the cut-off valve C11 after the connecting pipe 1 is filled with anthracene oil;

3) opening a cut-off valve B9 on the anthracene oil pipe 8, then opening a cut-off valve A5 at the opening of the asphalt liquid level meter, continuously supplementing anthracene oil into the connecting pipe 1 through the flow-limiting pore plate 10, and controlling the feeding amount of the anthracene oil to be 5-10L/h;

4) anthracene oil is continuously supplemented into the connecting pipe 1, flows slowly from top to bottom and then from bottom to top, and enters an asphalt storage tank through an opening of an asphalt liquid level meter through a cut-off valve A5;

5) because the heights of the horizontal sections at the front end and the rear end of the U-shaped connecting pipe 1 are the same, and the flowing speed of anthracene oil in the connecting pipe 1 is extremely slow, the pressure drop loss is almost zero, namely the pressures of the horizontal sections at the front end and the rear end of the U-shaped connecting pipe 1 are the same, so that the liquid level height of the asphalt storage tank can be calculated by only measuring the pressure of the anthracene oil at the horizontal section at the rear end (close to the detection diaphragm box 2) of the connecting pipe 1, namely indirectly measuring the pressure of the horizontal section at the front end (close to the asphalt storage tank) and then calculating the liquid level height of the asphalt storage tank by a formula H (P/rho g), wherein H (liquid level height of the asphalt storage tank), P (pressure at the detection diaphragm box), rho (asphalt density, g (gravity acceleration).

Therefore, this patent is through the indirect measurement pitch liquid level of anthracene oil, has avoided the not enough of the easy coking of conventional level gauge when measuring the pitch liquid level, has guaranteed that the pressure differential level gauge can long-term normal use.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A device for indirectly measuring the liquid level of an asphalt storage tank by using anthracene oil comprises a connecting pipe, a detection diaphragm capsule, a capillary, a pressure transmitter, a stop valve A, an exhaust valve, a blow-down valve, an anthracene oil pipe, a stop valve B, a flow-limiting pore plate, a stop valve C and an electric tracing band, and is characterized in that the connecting pipe is a U-shaped pipe, one end of the connecting pipe is connected with an asphalt liquid level meter port arranged on the asphalt storage tank through the stop valve A, and the other end of the connecting pipe is connected with the detection diaphragm capsule; the two exhaust valves are respectively arranged on the horizontal section of the U-shaped pipe of the connecting pipe; the blowoff valve is arranged at the bottom of the U-shaped pipe of the connecting pipe; the pressure transmitter is connected with the detection diaphragm box through a capillary filled with silicone oil; the anthracene oil pipe is connected with a cut-off valve B and a flow-limiting pore plate in series, and is connected with a cut-off valve C in parallel and then is connected to a connecting pipe in front of the detection diaphragm box; the electric tracing band is arranged on the connecting pipe.

2. The device for indirectly measuring the liquid level of the asphalt storage tank by using anthracene oil as claimed in claim 1, wherein the U-shaped pipe of the connecting pipe is vertically arranged downwards, and the height of the horizontal sections at the two ends is the same.