CN214106393U

CN214106393U - Liquid outlet structure of medium-pressure absorption tower in urea production

Info

Publication number: CN214106393U
Application number: CN202022765286.6U
Authority: CN
Inventors: 李彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-09-03
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to a urea production middling pressure absorption tower liquid outlet structure, comprising a tower body, the liquid outlet body is installed to the bottom of tower body, and is connected with a collection liquid positioning mechanism between liquid outlet body and the tower body. The utility model discloses in, the inside of this middling pressure absorption tower is provided with liquid level gauge and liquid level detector, when the inside carbamate liquid level of middling pressure absorption tower was too high or cross when low, it gives controlgear to make liquid level gauge and liquid level detector send detection information, thereby controlgear's inside treater carries out information processing, then put through driving motor through the treater, thereby make driving motor rotate, it opens or closes for a short time to make the governing valve, carry out liquid level processing to the middling pressure absorption tower, avoid middling pressure absorption tower liquid level too high to lead to high-pressure carbamate pump hypervirrotational speed to rotate the jump car like this, the liquid level crosses lowly and leads to high-pressure carbamate pump to manage to find time the vapour and tie up the condition of jumping the car, and the liquid level fluctuation leads to the middling pressure absorption tower CO2 trace to exceed standard and causes phenomenons such as tray crystallization jam pipeline.

Description

Liquid outlet structure of medium-pressure absorption tower in urea production

Technical Field

The utility model relates to a urea production middling pressure absorption tower liquid outlet structure belongs to urea production technical field.

Background

Urea is an organic compound consisting of carbon, nitrogen, oxygen and hydrogen, is a white crystal, is one of the simplest organic compounds, is a main nitrogen-containing end product of protein metabolic decomposition in mammals and certain fishes, is also a nitrogen fertilizer with the highest nitrogen content at present, is used as a neutral fertilizer, and is suitable for various soils and plants.

When using, although can discharge the inside carbamate liquid of middling pressure absorption tower, all discharge through artificial mode during the emission, but when putting into production, lead to discharging untimely condition easily, thereby when the liquid level is too high or low lead to high-pressure carbamate pump to skip car, and the liquid level fluctuation leads to middling pressure absorption tower CO2 trace to exceed standard and cause the tray crystallization, block up the problem of phenomenons such as pipeline during serious, to this we design a middling pressure absorption tower liquid outlet structure in urea production.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve current urea production middling pressure absorption tower liquid outlet when using, though can discharge the inside carbamate liquid of middling pressure absorption tower, all discharge through artificial mode when nevertheless discharging, but when producing, lead to discharging untimely condition easily to lead to the problem of high-pressure carbamate pump trip.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a urea production middling pressure absorption tower liquid outlet structure, includes the tower body, the liquid outlet body is installed to the bottom of tower body, and is connected with a collection liquid positioning mechanism between liquid outlet body and the tower body, the left end surface mounting of tower body has controlgear, and controlgear's top is provided with liquid level gauge, the internally mounted of liquid outlet body has automatic tapping mechanism, and the outside of liquid outlet body is provided with external counterpoint mechanism, the inside of automatic tapping mechanism is including the position fixing plate, and the right-hand member surface connection of position fixing plate has driving motor, driving motor's left end surface mounting has the transmission shaft, and the outside of transmission shaft is provided with the maintenance bearing, the left end surface mounting of transmission shaft has the governing valve.

Furthermore, the transmission shaft and the retention plate form a rotating structure through the retention bearing, and a transverse axis of the transmission shaft coincides with a transverse axis of the retention bearing.

Further, the inside interface that is included of collection liquid positioning mechanism, and install a collection liquid funnel to the outside of interface, the external connection of collection liquid funnel has the installation piece, and the internal thread connection of installation piece has the maintenance bolt.

Furthermore, the liquid collection funnel and the tower body form a fixed structure through the mounting block and the retention bolt, and the mounting block is symmetrical relative to the central axis of the liquid collection funnel.

Further, the external aligning mechanism is internally provided with an external connecting pipe, a first flange plate is installed at the top end of the external connecting pipe, a second flange plate is arranged at the top of the first flange plate, the internal thread of the first flange plate is connected with a positioning bolt, and the external thread of the positioning bolt is connected with a positioning nut.

Furthermore, the first flange plate and the second flange plate form a fixed structure through the positioning bolts and the positioning nuts, and the cross-sectional area of the second flange plate is the same as that of the first flange plate.

The utility model discloses a technological effect and advantage:

1. in the utility model, a liquid level gauge and a liquid level detector are arranged inside the medium-pressure absorption tower, when the liquid level of the inner methylamine of the medium-pressure absorption tower is too high or the hydraulic pressure is too low, the liquid level gauge and the liquid level detector are enabled to transmit detection information to the control equipment, the internal processor of the control equipment is enabled to process information, then the driving motor is switched on through the processor, so that the driving motor rotates, the regulating valve is enabled to be opened, the medium-pressure absorption tower is subjected to liquid discharge processing, the conditions that the high-pressure methylamine pump rotates and jumps due to the overhigh liquid level of the medium-pressure absorption tower, the high-pressure methylamine pump evacuates steam and ties up the jumpers due to the overlow liquid level are avoided, and the phenomena that the trace of the medium-pressure absorption tower CO2 exceeds the standard to cause tower tray crystallization due to liquid level fluctuation of the liquid level, pipelines are blocked seriously, thereby the liquid outlet is discharged in real time, the phenomenon that manual liquid discharge is not timely is avoided, thereby effectively improving the use safety of the medium-pressure absorption tower.

2. The utility model discloses in, install a collection liquid funnel between this middling pressure absorption tower and the liquid outlet, thereby wherein then make the methylamine liquid that the middling pressure absorption tower flows can effectually collect convenient unified emission through a collection liquid funnel, avoided the circumstances that the tapping dispersion leads to omitting, wherein collect the liquid funnel and connect fixedly through multiunit installation piece to guaranteed the fastness that a collection liquid funnel connects, then the effectual stability in use who improves the liquid outlet.

3. The utility model discloses in, this middling pressure absorption tower liquid outlet department installs the second ring flange, wherein carries out quick counterpoint through the first ring flange of second ring flange and outside external tapping and is connected to make things convenient for staff's operation, improved the portability of the follow-up operation of this liquid outlet, wherein the sealing washer is installed to second ring flange, first ring flange junction, thereby has guaranteed the leakproofness of junction, thereby avoids the phenomenon of inside liquid outflow, has then guaranteed the practicality of this middling pressure absorption tower liquid outlet.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a front view of the present invention;

FIG. 2 is a schematic view of the liquid collecting and positioning mechanism of the present invention;

fig. 3 is a schematic view of the external alignment mechanism of the present invention.

Reference numbers in the figures: 1. a tower body; 2. a liquid outlet body; 3. a control device; 4. a liquid level pressure gauge; 5. an automatic tapping mechanism; 501. a position-retaining plate; 502. a drive motor; 503. a drive shaft; 504. a retention bearing; 505. Adjusting a valve; 6. a liquid collecting and positioning mechanism; 601. a butt joint port; 602. a liquid collecting funnel; 603. mounting blocks; 604. A retention bolt; 7. an external alignment mechanism; 701. an external connection pipe; 702. a first flange plate; 703. a second flange plate; 704. positioning the bolt; 705. and positioning the nut.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1-3, a liquid outlet structure of a medium pressure absorption tower for urea production comprises a tower body 1, a liquid outlet body 2, a control device 3, a liquid level pressure gauge 4, an automatic liquid discharging mechanism 5, a retaining plate 501, a driving motor 502, a transmission shaft 503, a retaining bearing 504, a regulating valve 505, a liquid collecting and positioning mechanism 6, a butt joint 601, a liquid collecting funnel 602, a mounting block 603, a retaining bolt 604, an external alignment mechanism 7, an external pipe 701, a first flange 702, a second flange 703, a positioning bolt 704 and a positioning nut 705, wherein the liquid outlet body 2 is mounted at the bottom of the tower body 1, the liquid collecting and positioning mechanism 6 is connected between the liquid outlet body 2 and the tower body 1, the control device 3 is mounted on the left end surface of the tower body 1, the liquid level pressure gauge 4 is arranged at the top of the control device 3, the automatic liquid discharging mechanism 5 is mounted inside the liquid outlet body 2, and the external alignment mechanism 7 is arranged outside the liquid outlet body 2, automatic tapping mechanism 5's inside is including position plate 501, and position plate 501's right-hand member surface connection has driving motor 502, driving motor 502's left end surface mounting has transmission shaft 503, and the outside of transmission shaft 503 is provided with maintenance bearing 504, transmission shaft 503's left end surface mounting has governing valve 505, wherein the inside of this middling pressure absorption tower is provided with liquid level gauge 4 and liquid level detector, when the inside carbamate liquid level of middling pressure absorption tower was too high or the hydraulic pressure was low, make liquid level gauge 4 and liquid level detector send control device 3 with detection information, thereby control device 3's inside treater carries out information processing, then switch on driving motor 502 through the treater, thereby make driving motor 502 rotate, make governing valve 505 open, carry out tapping processing to the middling pressure absorption tower.

As shown in fig. 1, the transmission shaft 503 of the present embodiment forms a rotation structure with the retention plate 501 through the retention bearing 504, and the transverse axis of the transmission shaft 503 coincides with the transverse axis of the retention bearing 504, wherein the drive motor 502 is enabled to be effectively retained by the retention plate 501.

As shown in fig. 2, the liquid collecting and positioning mechanism 6 of the present embodiment includes a butt joint 601 inside, and a liquid collecting funnel 602 is installed outside the butt joint 601, the external connection of the liquid collecting funnel 602 has an installation block 603, and the internal thread of the installation block 603 is connected with a retaining bolt 604, wherein the liquid collecting funnel 602 enables the ammonium carbamate liquid flowing out of the medium-pressure absorption tower to be collected effectively, so that uniform discharge is facilitated, and the situation that liquid discharging dispersion leads to omission is avoided.

As shown in fig. 2, the liquid collecting funnel 602 of the present embodiment forms a fixed structure with the tower body 1 through the mounting block 603 and the retention bolt 604, and the mounting block 603 is symmetrical about the central axis of the liquid collecting funnel 602, wherein the liquid collecting funnel 602 is connected and fixed through a plurality of sets of mounting blocks 603, thereby ensuring the connection firmness of the liquid collecting funnel 602, and effectively improving the use stability of the liquid outlet.

As shown in fig. 3, the external alignment mechanism 7 of this embodiment includes an external pipe 701, a first flange plate 702 is installed on the top end of the external pipe 701, a second flange plate 703 is disposed on the top of the first flange plate 702, a positioning bolt 704 is connected to the internal thread of the first flange plate 702, a positioning nut 705 is connected to the external thread of the positioning bolt 704, and the external pipe 701 and the first flange plate 702 are connected to each other through the second flange plate 703 for quick alignment, so that the operation of a worker is facilitated, and the portability of subsequent operations of the liquid outlet is improved.

As shown in fig. 3, the first flange plate 702 of this embodiment forms a fixed structure with the second flange plate 703 through the positioning bolt 704, the positioning nut 705, and the cross-sectional area of the second flange plate 703 is the same as the cross-sectional area of the first flange plate 702, wherein a sealing ring is installed at the joint of the second flange plate 703 and the first flange plate 702, thereby ensuring the sealing property of the joint and avoiding the phenomenon of internal liquid flowing out.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

The utility model discloses the theory of operation: the liquid level gauge 4 and the liquid level detector are arranged inside the medium-pressure absorption tower, when the liquid level of the internal carbamate liquid of the medium-pressure absorption tower is too high or the hydraulic pressure is too large, the liquid level gauge 4 and the liquid level detector transmit detection information to the control equipment 3, information processing is carried out by an internal processor of the control equipment 3, then the driving motor 502 is switched on through the processor, so that the driving motor 502 rotates, the regulating valve 505 is opened, liquid discharging processing is carried out on the medium-pressure absorption tower, the phenomena that the high-pressure carbamate pump rotates and jumps due to overhigh or overlow liquid level of the medium-pressure absorption tower, the high-pressure carbamate pump evacuates and jumps due to overhigh vapor level and the trace of CO2 of the medium-pressure absorption tower causes tower tray crystallization and pipeline blockage in serious cases are avoided, and the phenomena such as pipeline blockage and the like are caused by over-low liquid level, so that the phenomenon that manual liquid discharging is not timely is avoided, thereby effectively improving the use safety of the medium-pressure absorption tower, a liquid collecting funnel 602 is arranged between the medium-pressure absorption tower and the liquid outlet, wherein the liquid collecting funnel 602 can effectively collect the methylamine liquid flowing out of the medium-pressure absorption tower so as to be conveniently and uniformly discharged, and the omission caused by liquid discharge dispersion is avoided, wherein the liquid collecting funnel 602 is fixedly connected through a plurality of groups of mounting blocks 603, thereby ensuring the connection firmness of the liquid collecting funnel 602, thereby effectively improving the use stability of the liquid outlet, a second flange plate 703 is arranged at the liquid outlet of the medium-pressure absorption tower, wherein the second flange plate 703 is in quick contraposition connection with a first flange plate 702 of an external pipe 701, thereby facilitating the operation of workers, improving the portability of subsequent operation of the liquid outlet, wherein the joint of the second flange plate 703 and the first flange plate 702 is provided with a sealing ring, thereby guaranteed the leakproofness of junction to avoid the phenomenon that inside liquid flows out, then guaranteed the practicality of this middling pressure absorption tower liquid outlet.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a urea production middling pressure absorption tower liquid outlet structure, includes tower body (1), its characterized in that: a liquid outlet body (2) is arranged at the bottom of the tower body (1), a liquid collecting and positioning mechanism (6) is connected between the liquid outlet body (2) and the tower body (1), a control device (3) is arranged on the surface of the left end of the tower body (1), a liquid level pressure gauge (4) is arranged at the top of the control device (3), an automatic liquid discharging mechanism (5) is arranged in the liquid outlet body (2), and the outer side of the liquid outlet body (2) is provided with an external contraposition mechanism (7), the automatic liquid discharging mechanism (5) comprises a position fixing plate (501) inside, the right end surface of the position fixing plate (501) is connected with a driving motor (502), the left end surface of the driving motor (502) is provided with a transmission shaft (503), and a retaining bearing (504) is arranged on the outer side of the transmission shaft (503), and a regulating valve (505) is arranged on the surface of the left end of the transmission shaft (503).

2. The outlet structure of a medium-pressure absorption tower in urea production as claimed in claim 1, wherein: the transmission shaft (503) and the retention plate (501) form a rotating structure through the retention bearing (504), and the transverse axis of the transmission shaft (503) is coincident with the transverse axis of the retention bearing (504).

3. The outlet structure of a medium-pressure absorption tower in urea production as claimed in claim 1, wherein: the liquid collecting and positioning mechanism (6) is internally provided with a butt joint (601), a liquid collecting funnel (602) is installed on the outer side of the butt joint (601), the outer portion of the liquid collecting funnel (602) is connected with an installation block (603), and the inner thread of the installation block (603) is connected with a retaining bolt (604).

4. The outlet structure of a medium-pressure absorption tower in urea production as claimed in claim 3, wherein: the liquid collection funnel (602) and the tower body (1) form a fixed structure through the mounting block (603) and the retaining bolt (604), and the mounting block (603) is symmetrical about the central axis of the liquid collection funnel (602).

5. The outlet structure of a medium-pressure absorption tower in urea production as claimed in claim 1, wherein: the external aligning mechanism (7) is internally provided with an external connecting pipe (701), a first flange plate (702) is installed on the top end of the external connecting pipe (701), a second flange plate (703) is arranged at the top of the first flange plate (702), the internal thread of the first flange plate (702) is connected with a positioning bolt (704), and the external thread of the positioning bolt (704) is connected with a positioning nut (705).

6. The outlet structure of a medium-pressure absorption tower in urea production as claimed in claim 5, wherein: the first flange plate (702) and the second flange plate (703) form a fixed structure through a positioning bolt (704), a positioning nut (705), and the cross-sectional area of the second flange plate (703) is the same as that of the first flange plate (702).