Polyester device hot well device capable of being remotely monitored

Abstract

The utility model discloses a polyester device hot well device, belongs to the technical field of polyester device hot well devices, and particularly relates to a polyester device hot well device capable of being monitored remotely, which comprises a hot well body, an air blowing pipe, a nitrogen input port and a pressure transmitter. An air blowing pipe is inserted into the hot well, and the upper end of the air blowing pipe is connected with a pressure transmitter through a tee joint. Nitrogen is connected into the gas blowing pipe through the pressure reducing valve, the pressure of the pressure reducing valve is adjusted according to the liquid level height, and constant-flow gas escapes from a lower port of the gas blowing pipe inserted into liquid, bubbles and is discharged into the atmosphere through the liquid; when a trace of bubbles escape from the lower end of the air blowing pipe, the air pressure in the air blowing pipe is almost equal to the liquid level static pressure, so that the liquid level height can be reflected by a pressure value indicated by the pressure transmitter, and the device is simple in design, convenient to install and compact in structure, and the process operation convenience is greatly improved.

Description

Technical Field

[0001] The utility model discloses a polyester device hot well device, belongs to the technical field of polyester device hot well devices, and particularly relates to a polyester device hot well device capable of remote monitoring. Background Art

[0002] In a polyester production plant, a hot well is connected to the scraper condenser of the main reactor via an atmospheric leg. The atmospheric leg's liquid seal maintains a vacuum environment in the reactor. Oligomers produced during the polyester polycondensation reaction enter the hot well, which is equipped with a basket filter. On-site operators are required to regularly remove slag and clean the filter plates based on production conditions. Improper operation can lead to unexpected problems such as liquid level overflow and circulation pump evaporation. Failure to address this issue in a timely manner can cause reactor vacuum fluctuations, seriously impacting the stability of the continuous production process, resulting in product quality fluctuations, and potentially causing production accidents. Utility Model Content

[0003] The purpose of the utility model is to provide a polyester device hot well device that can be remotely monitored to solve the above-mentioned problems.

[0004] Technical solution: A remotely monitored hot well device for a polyester device, comprising a hot well body, a blowpipe, a nitrogen inlet, and a pressure transmitter;

[0005] The air blowing pipe is inserted into the hot well body, and the top end of the air blowing pipe is connected to the pressure transmitter and the nitrogen input port respectively.

[0006] In a further embodiment, a tee is provided at the top of the air blowing pipe, one end of the tee is connected to the air blowing pipe, the second end is connected to the pressure transmitter, and the third end is connected to the nitrogen inlet.

[0007] In a further embodiment, a pressure reducing valve is provided between the nitrogen inlet and the three-way connection.

[0008] In a further embodiment, a liquid input port and an air outlet are provided on the top of the hot well body; an air inlet is provided on one side of the hot well body; and a liquid output port and a filter port are provided on the bottom of the hot well body.

[0009] Beneficial effects: The polyester hot well device of this utility model has a simple design, easy installation, compact structure and low failure rate! After the remote liquid level signal is connected to the DCS, it can intuitively reflect the degree of dirtiness of the basket filter plate, greatly improving the convenience of process operation. The liquid level curve is stored in the DCS historical trend, which facilitates process control analysis, optimizes process parameters, and improves product quality stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the present utility model.

[0011] Reference numerals: hot well body 1, air blowing pipe 2, nitrogen inlet 3, pressure transmitter 4, tee 5, pressure reducing valve 6, liquid inlet 7, air outlet 8, air inlet 9, liquid outlet 10, filter port 11. DETAILED DESCRIPTION

[0012] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0015] A hot well device for a polyester device capable of remote monitoring comprises: a hot well body 1, an air blowing pipe 2, a nitrogen inlet 3, and a pressure transmitter 4.

[0016] In one embodiment, Figure 1 As shown, the blowing pipe 2 is inserted into the hot well body 1, and the top end of the blowing pipe 2 is connected to the pressure transmitter 4 and the nitrogen input port 3 respectively.

[0017] In one embodiment, Figure 1As shown, a tee 5 is provided at the top of the blowing pipe 2 , one end of the tee 5 is connected to the blowing pipe 2 , the second end is connected to the pressure transmitter 4 , and the third end is connected to the nitrogen inlet 3 .

[0018] In one embodiment, Figure 1 As shown, a pressure reducing valve 6 is provided between the nitrogen inlet 3 and the tee 5 .

[0019] In one embodiment, Figure 1 As shown, the top of the hot well body 1 is provided with a liquid input port 7 and an air outlet 8; one side of the hot well body 1 is provided with an air inlet 9; and the bottom of the hot well body 1 is provided with a liquid output port 10 and a filter port 11.

[0020] Working Principle: A gas pipe 2 is inserted into the hot well, its upper end connected to a pressure transmitter 4 via a tee 5. Nitrogen is introduced into the pipe through a pressure reducing valve 6. The pressure of the valve is adjusted according to the liquid level, allowing a constant flow of gas to escape from the lower end of the pipe, where it is inserted into the liquid, bubbling and escaping into the atmosphere through the liquid. When a small amount of bubbles escape from the lower end of the pipe, the air pressure within the pipe is almost equal to the static pressure of the liquid. Therefore, the pressure indicated by the pressure transmitter 4 reflects the liquid level.

[0021] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A remotely monitored hot well device for a polyester device, characterized in that: The hot well device includes: a hot well body, a blowpipe, a nitrogen inlet and a pressure transmitter; The air blowing pipe is inserted into the hot well body, and the top end of the air blowing pipe is connected to the pressure transmitter and the nitrogen input port respectively.

2. The polyester device hot well device capable of remote monitoring according to claim 1, characterized in that: A tee is provided at the top of the air blowing pipe, one end of the tee is connected to the air blowing pipe, the second end is connected to the pressure transmitter, and the third end is connected to the nitrogen inlet.

3. The polyester device hot well device capable of remote monitoring according to claim 2, characterized in that: A pressure reducing valve is provided between the nitrogen inlet and the three-way connection.

4. The polyester device hot well device capable of remote monitoring according to claim 1, characterized in that: The top of the hot well body is provided with a liquid input port and an air outlet; one side of the hot well body is provided with an air inlet; and the bottom of the hot well body is provided with a liquid output port and a filter port.

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