Tool for treating blockage of instrument pipe in cold box of air separation device

Abstract

The utility model relates to the technical field of air separation deep cooling, in particular to a tool for treating blockage of an instrument pipe in a cold box of an air separation device, which comprises a hollow tank body, a liquid inlet pipe and an exhaust pipe which are communicated with the inside of the tank body are arranged on the tank body, a heating device and a gas pipeline are arranged in the tank body, and the liquid inlet pipe supplies liquid to the tank body. The heating device is used for heating liquid in the tank body, and the two ends of the gas pipeline extend out of the tank body to form a gas inlet and a gas outlet. The instrument pipeline dredging device can dredge a blocked instrument pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of air separation cryogenic technology, and particularly relates to a tool for dealing with the blockage of instrument pipes in a cold box of an air separation device. Background Technique

[0002] An air separation device is an industrial equipment device that separates the component gases in air and produces gases such as oxygen, nitrogen, argon, etc. of air components respectively. The most commonly used air separation method is the low-temperature rectification method. The low-temperature separation method turns air into liquid through the method of compression cycle deep refrigeration, and gradually separates and produces oxygen, nitrogen, argon and other inert gases from the liquid air according to different boiling points through low-temperature rectification.

[0003] Among them, there are hundreds of instrument gas pipes densely arranged in the fractionating tower. It is an important link for detecting gas components, pressure, temperature, and liquid level. Under long-term operation conditions, due to carbon dioxide in the gas, dry ice is easily formed after reaching the critical temperature, resulting in blockage of the instrument gas pipes, difficult to dredge, inaccurate feedback data, and great interference to production operation. If all the standby pipelines are blocked, it will cause the process data to be unable to be adjusted and monitored, and in severe cases, the entire set of equipment will stop.

[0004] Therefore, there is an urgent need for a tool for dealing with the blockage of instrument pipes in the cold box of an air separation device. Summary of the Invention

[0005] In order to solve the problems of blockage of instrument gas pipes in the fractionating tower, difficult to dredge, and inaccurate feedback data, the utility model provides a tool for dealing with the blockage of instrument pipes in the cold box of an air separation device, which can dredge the blocked instrument pipelines.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A tool for dealing with the blockage of instrument pipes in the cold box of an air separation device includes a hollow tank body. An inlet liquid pipe and an exhaust pipe communicated with the inside of the tank body are arranged on the tank body. A heating device and a gas pipeline are arranged inside the tank body. The inlet liquid pipe supplies liquid to the tank body. The heating device heats the liquid inside the tank body. Both ends of the gas pipeline extend out of the tank body to form an air inlet and an air outlet. The heated gas can be used to dredge the blocked instrument pipelines in the air separation device.

[0008] Furthermore, handles are symmetrically arranged at the top of the tank body. The cross-sections of the two handles are concentric arcs. The exhaust pipe is located between the two handles, and the inlet liquid pipe is located outside the two handles. The space between the handle and the inlet liquid pipe can be used to store pipelines.

[0009] Further, an oval hole is provided in the upper part of the handle, a buckle is provided in the lower part of the handle, a retaining strip is provided on the tank body, and the retaining strip and the liquid inlet pipe are located on an arc concentric with the handle. The handle is used for holding; after the device is used up, if the device includes a hose connected to the tank body, the hose can be wound around the outside of the tank body between the handle and the liquid inlet pipe and between the handle and the retaining strip. At this time, the liquid inlet pipe and the retaining strip can prevent the hose from falling to the ground.

[0010] Further, a thermometer is provided on the tank body, and a water outlet is provided at the bottom of the tank body. The thermometer is used to measure the temperature inside the tank body, and the liquid inside the tank body is discharged from the water outlet.

[0011] Further, the liquid inside the tank body is water, and the gas inside the gas pipeline is oxygen, nitrogen or argon. After the water inside the tank body is heated, the gas inside the gas pipeline is heated.

[0012] Further, the heating device is an electric heating element, and the electric heating element is an electric heating tube, an electric heating plate or an electromagnetic heater. The electric heating element is used to heat the liquid inside the tank body.

[0013] Further, the electric heating element is an electric heating tube, and the electric heating tube is in a coiled tube shape. The temperature difference between the electric heating tube and the liquid inside the tank body is increased, and the heating efficiency is improved.

[0014] Further, the gas pipeline is in a coiled tube shape inside the tank body. When the gas passes through the gas pipeline, it absorbs the heat in the tank body.

[0015] Further, the air inlet and the air outlet are respectively connected to an inlet pipe and an outlet pipe outside the tank body. The inlet pipe is connected to the air tank or the outlet of the fractionating tower, and the outlet pipe is connected to the instrument pipeline of the fractionating tower. The heated gas enters the instrument pipeline of the fractionating tower to melt the dry ice blocked in the pipeline. The inlet pipe and the outlet pipe are hoses. After the device is used up, the inlet pipe and the outlet pipe can be wound around the outside of the tank body between the handle and the liquid inlet pipe and between the handle and the retaining strip. At this time, the liquid inlet pipe and the retaining strip can prevent the hoses from falling to the ground.

[0016] Further, a high-pressure gauge is provided on the inlet pipe. It is used to measure and monitor the concentration of the gas in the inlet pipe.

[0017] By the above technical solutions, the beneficial effects of the present utility model are as follows:

[0018] In the present utility model, a heating device and a gas pipeline are provided inside the tank body. By means of the heating device, the temperature inside the gas pipeline is raised, so that the gas inside the gas pipeline can melt the dry ice after being heated, dredge the instrument pipeline, improve the accuracy of the control instruments inside the fractionating tower, and promote production.

[0019] The intake pipe of the present utility model is connected to the fractionation gas outlet of the fractionating tower, and the outlet pipe of the present utility model is communicated with the instrument pipeline of the fractionating tower. The gas produced by the fractionating tower is used to remove the dry ice in the instrument pipeline in the tower, without generating other gases additionally, without harmful products, being environmentally friendly and having a high resource utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic external structural diagram of the tank body of the present utility model;

[0022] Figure 3 is a schematic internal structural diagram of the tank body of the present utility model;

[0023] In the drawings, the reference numerals are: 1 is the tank body, 10 is the handle, 11 is the exhaust pipe, 12 is the liquid inlet pipe, 13 is the air inlet, 14 is the air outlet, 15 is the baffle, 2 is the heating device, 3 is the gas pipeline, 31 is the intake pipe, 32 is the outlet pipe, and 4 is the fractionating tower. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be further described below in conjunction with the drawings and the detailed description of the embodiments:

[0025] As Figures 1 to 3 shown, this embodiment provides a tool for treating the blockage of the instrument pipeline in the cold box of the air separation unit, including a hollow tank body 1. An inlet pipe 12 and an exhaust pipe 11 communicating with the inside of the tank body 1 are arranged on the tank body 1. A heating device 2 and a gas pipeline 3 are arranged inside the tank body 1. The inlet pipe 12 supplies liquid to the tank body 1, the heating device 2 heats the liquid in the tank body 1, and both ends of the gas pipeline 3 extend out of the tank body 1 to form an air inlet 13 and an air outlet 14.

[0026] The tank body 1 is made of metal. Handles 10 are symmetrically arranged at the top of the tank body 1 for moving the tool of the present invention. Oval holes are opened in the upper parts of the handles 10 for holding. The tank body 1 includes an upper part and a lower part, and the upper part and the lower part are fixedly connected or detachably connected. As an implementable manner, the upper part and the lower part are connected by bolts. The heating device is arranged in the lower part of the tank body 1, the gas pipeline 3 is arranged in the upper part of the tank body 1, the inlet pipe 12 and the exhaust pipe 11 are located at the top of the tank body 1, and a water outlet is arranged at the bottom of the tank body 1 for discharging the liquid in the tank body 1; the air inlet 13 and the air outlet 14 are located on the side wall of the tank body 1.

[0027] To ensure that the temperature and pressure inside the tank body 1 are within a safe range, a thermometer is provided on the tank body 1. The thermometer is a bimetallic thermometer, and the measured temperature inside the tank body 1 is displayed on the dial. A water addition valve is provided on the liquid inlet pipe 12, and an air release valve is provided on the exhaust pipe 11. The water addition valve is used to inject liquid into the tank body 1, and the air release valve is used to relieve the pressure of the tank body 1.

[0028] The liquid inside the tank body 1 is water, and the gas inside the gas pipeline 3 is oxygen, nitrogen or argon.

[0029] The heating device 2 is an electric heating element. The electric heating element is an electric heating tube, an electric heating plate or an electromagnetic heater. The electric heating element is arranged at the bottom of the tank body 1, and the electric heating element is connected to a power supply outside the tank body 1. As an implementable way, the electric heating element is an electric heating tube, and the electric heating tube is in a coiled shape.

[0030] The gas pipeline 3 is in a coiled shape inside the tank body 1. The air inlet 13 and the air outlet 14 are respectively connected to the inlet pipe 31 and the outlet pipe 32 outside the tank body 1. The inlet pipe 31 is connected to the air outlet of a gas tank or a fractionating tower 4, and the outlet pipe 32 is connected to the instrument pipeline of the fractionating tower 4. To ensure the stability of the gas source pressure, a high-pressure gauge is provided on the inlet pipe 31. The high-pressure gauge is an oxygen-acetylene gauge, which can measure and monitor the concentration of oxygen, nitrogen or argon.

[0031] To facilitate the storage of the inlet pipe 31 and the outlet pipe 32 and avoid damage caused by pipeline dragging, the cross-sections of the two handles 10 are concentric arcs. The exhaust pipe 11 is located between the two handles 10, and the liquid inlet pipe 12 is located outside the two handles 10. A buckle is provided at the lower part of the handle 10, and a stop bar 15 is provided on the tank body 1. The stop bar 15 and the liquid inlet pipe 12 are located on an arc concentric with the handle 10. After the device is used up, the inlet pipe 31 and the outlet pipe 32 can be wound outside the tank body 1 between the handle 10 and the liquid inlet pipe 12, and between the handle 10 and the stop bar 15. After winding, the free ends of the pipelines can be clamped at the buckle. As an implementable way, the buckle is an arc-shaped plastic part made of elastic plastic with one end open; the stop bar is in a straight line shape or an L shape, which is used to limit the position of the pipeline and prevent the pipeline from slipping.

[0032] The principle of the present utility model:

[0033] When the instrument gas pipeline of the fractionating tower is blocked, open the water addition valve, introduce an appropriate amount of water into the tank body 1, turn on the heating device 2, heat the liquid in the tank body 1 to 80 °C, introduce the corresponding gas into the inlet pipe 31, the gas enters the gas pipeline 3 inside the tank body 1, absorbs the heat of the high-temperature water in the tank body 1, and the heated gas enters the instrument pipeline of the fractionating tower 4 through the outlet pipe 32 to melt the dry ice in the instrument pipeline, achieving the dredging effect.

[0034] The above-described embodiments are only the preferred embodiments of the present utility model, and do not limit the scope of implementation of the present utility model. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present utility model patent shall be included within the scope of the patent application of the present utility model.

Claims

1. A tool for treating the blockage of instrument pipes in the cold box of an air separation unit, characterized in that: The invention comprises a hollow tank body (1), wherein a liquid inlet pipe (12) and an exhaust pipe (11) which are in communication with the interior of the tank body (1) are arranged on the tank body (1), a heating device (2) and a gas pipeline (3) are arranged inside the tank body (1), the liquid inlet pipe (12) supplies liquid to the tank body (1), the heating device (2) heats the liquid in the tank body (1), and two ends of the gas pipeline (3) extend out from the tank body (1) to form an air inlet (13) and an air outlet (14).

2. A tool for treating the blockage of instrument pipes in the cold box of an air separation unit according to claim 1, characterized in that: The top of the tank body (1) is symmetrically provided with handles (10), the cross-sections of the two handles (10) are in the shape of concentric arcs, the exhaust pipe (11) is located between the two handles (10), and the liquid inlet pipe (12) is located outside the two handles (10).

3. A tool for treating the blockage of instrument pipes in the cold box of an air separation unit according to claim 2, characterized in that: An elliptical hole is provided on the upper portion of the handle (10), a buckle is provided on the lower portion of the handle (10), a retaining bar (15) is provided on the tank body (1), and the retaining bar (15) and the liquid inlet pipe (12) are located on an arc line concentric with the handle (10).

4. A tool for treating the blockage of instrument pipes in the cold box of an air separation unit according to claim 1, characterized in that: A thermometer is provided on the tank body (1), and a water outlet is provided at the bottom of the tank body (1).

5. A tool for treating the blockage of instrument pipes in the cold box of an air separation unit according to claim 1, characterized in that: The liquid in the tank (1) is water, and the gas in the gas pipeline (3) is oxygen, nitrogen or argon.

6. A tool for treating the blockage of instrument pipes in the cold box of an air separation unit according to claim 1, characterized in that: The heating device (2) is an electric heating element, and the electric heating element is an electric heating tube, an electric heating plate or an electromagnetic heater.

7. A tool for treating blockage of instrument pipes in a cold box of an air separation unit according to claim 6, characterized in that: The electric heating element is an electric heating tube, and the electric heating tube is in a coil shape.

8. A tool for treating the blockage of instrument pipes in the cold box of an air separation unit according to claim 1, characterized in that: The gas pipeline (3) is in the shape of a coil inside the tank body (1).

9. A tool for treating the blockage of instrument pipes in the cold box of an air separation unit according to claim 1, characterized in that: The air inlet (13) and the air outlet (14) are respectively connected to an air inlet pipe (31) and an air outlet pipe (32) outside the tank body (1); the air inlet pipe (31) is connected to the air outlet of the gas tank or the fractionation tower (4), and the air outlet pipe (32) is connected to the instrument pipeline of the fractionation tower (4).

10. A tool for treating the blockage of instrument pipes in the cold box of an air separation unit according to claim 9, characterized in that: The air intake pipe (31) is provided with a high pressure gauge.

Images