Self-cleaning tar storage tank temperature measuring device

Abstract

The utility model relates to a self-cleaning tar storage tank temperature measuring device, and belongs to the technical field of coal coking instrument temperature measurement. According to the technical scheme, one end of a sleeve (2) is a closed end, the other end of the sleeve (2) is welded with a convex flange (2-4), a sleeve wall (2-2) is provided with a plurality of flushing holes (2-1) and a flushing connecting pipe (2-3), the sleeve (2) is horizontally fixed to a tar storage tank (6), the closed end of the sleeve (2) and the flushing holes (2-1) in the sleeve wall (2-2) are all located in the tar storage tank (6), a thermal resistor (1) is inserted into the sleeve (2), and the thermal resistor (1) is connected with the convex flange (2-4). And a flushing connecting pipe (2-3) on the sleeve wall (2-2) is connected with an outlet pipeline of the tar loading pump (5) through a flushing pipe (4). The tar tank has the beneficial effects that the temperature measuring element in the tar tank is backwashed by a small amount of tar when the tar is loaded, so that the problem of inaccurate temperature measurement caused by slag deposition of a thermal resistor is solved.

Description

Technical Field

[0001] The utility model relates to a self-cleaning tar storage tank temperature measuring device, belonging to the technical field of coal coking instrument temperature measurement. Background Art

[0002] The tar produced by the coking plant is stored in the tar storage tank. Generally, the tar in the storage tank is heated by indirect steam to further separate the oil and water, ensuring that the water content of the tar for export is qualified. The temperature of the tar storage tank has a direct impact on the dehydration of the tar. Generally, the temperature of the tar tank is regulated at 85-90℃. Too much steam is introduced and the temperature of the tar tank is too high, which will cause oil and water to mix back. Insufficient heating steam and low temperature of the tar storage tank will lead to poor tar dehydration effect, affecting the quality of the tar.

[0003] The dehydration of tar tank is mainly achieved by controlling the amount of steam introduced through precise temperature measurement. If the temperature measurement is inaccurate, there is no basis for regulating the amount of heating steam, and the dehydration effect of tar is difficult to guarantee. The traditional temperature measurement method is to use WSS series bimetallic thermometers or Pt100 thermal resistors for measurement. The bimetallic thermometer or Pt100 thermal resistor is directly inserted into the tar storage tank and connected to the tar storage tank through threads or flanges. There is no problem with this measurement method in the early stage of use, but long-term use will cause slow temperature response and inaccuracy, and the tank temperature cannot be accurately controlled. The main reason is that the tar residue in the tar is deposited on the protective sleeve of the temperature measuring element. The longer the time, the thicker the deposited slag layer. Since the tar residue is a poor conductor of heat, it blocks the conduction of temperature, causing the thermal resistor to be unable to sense the temperature change in time, so that the temperature display is inaccurate, which brings great inconvenience to the control of the tar tank temperature. It can only be cleaned or replaced when the tar storage tank is overhauled, which causes great passivity to the continuous production of the coking plant. Utility Model Content

[0004] The utility model aims to provide a self-cleaning tar storage tank temperature measuring device, which can solve the problem of temperature inaccuracy caused by slag accumulation of thermal resistors by backwashing the temperature measuring elements in the tar tank with a small amount of tar when the tar is loaded.

[0005] The technical solution of the utility model is:

[0006] A self-cleaning tar storage tank temperature measuring device comprises a thermal resistor, a sleeve, a flushing pipe, a tar loading pump, a tar storage tank and a tar truck, wherein one end of the sleeve is a closed end and the other end is welded with a convex flange, a plurality of flushing holes and a flushing connection pipe are provided on the sleeve wall, the sleeve is fixed on the tar storage tank in a horizontal state, the closed end of the sleeve and the flushing holes on the sleeve wall are both located inside the tar storage tank, the thermal resistor is inserted into the sleeve, and the flushing connection pipe on the sleeve wall is connected to the outlet pipe of the tar loading pump through the flushing pipe.

[0007] The sleeve is fixed at the lower part of the tar storage tank in a horizontal state.

[0008] The plurality of flushing holes on the casing wall are arranged in a staggered manner.

[0009] A flushing valve is arranged on the flushing connecting pipe on the casing wall.

[0010] The flushing nozzle and raised face flange on the casing wall are located outside the tar storage tank.

[0011] The thermal resistor is connected to the convex flange of the sleeve.

[0012] The beneficial effects of the utility model are as follows: when tar is loaded, a small amount of tar is returned to release pressure in the flushing hole of the casing, and the slag accumulated on the outer wall of the thermal resistor protective casing is cleaned by the flushing and dissolving effect of the tar, thereby solving the problem of inaccurate temperature measurement of the thermal resistor caused by the slag accumulation. The utility model has a simple structure and is easy to operate, and can realize accurate control of the temperature of the tar storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a cross-sectional view of the casing of the utility model;

[0015] In the figure: thermal resistor 1, casing 2, flushing valve 3, flushing pipe 4, tar loading pump 5, tar storage tank 6, tar car 7;

[0016] Flushing hole 2-1, casing wall 2-2, flushing connection pipe 2-3, convex flange 2-4; DETAILED DESCRIPTION

[0017] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0018] See attached Figure 1 , 2 A self-cleaning tar storage tank temperature measuring device comprises a thermal resistor 1, a sleeve 2, a flushing pipe 4, a tar loading pump 5, a tar storage tank 6 and a tar car 7. One end of the sleeve 2 is a closed end, and the other end is welded with a convex flange 2-4. A plurality of flushing holes 2-1 and a flushing pipe 2-3 are provided on the sleeve wall 2-2. The sleeve 2 is fixed on the tar storage tank 6 in a horizontal state. The closed end of the sleeve 2 and the flushing holes 2-1 on the sleeve wall 2-2 are both located inside the tar storage tank 6. The thermal resistor 1 is inserted into the sleeve 2, and the flushing pipe 2-3 on the sleeve wall 2-2 is connected to the outlet pipe of the tar loading pump 5 through the flushing pipe 4.

[0019] In this embodiment, refer to the attached Figure 1 , 2The self-cleaning tar storage tank temperature measuring device comprises a thermal resistor 1, a sleeve 2, a flushing valve 3, a flushing pipe 4, a tar loading pump 5, a tar storage tank 6 and a tar car 7. The sleeve 2 is horizontally welded to the temperature measuring position of the tar storage tank 6. The thermal resistor 1 is inserted into the cleaning sleeve 2 and is flange-connected to the sleeve 2. The flushing pipe 4 on the sleeve 2 is connected to the flushing valve 3 in the form of a flange or thread and is connected to the outlet pipe of the tar loading pump 5.

[0020] Refer to the attached Figure 2 The casing 2 is a circular porous flange structure, one end is a blind end, and the other end is welded with a convex flange 2-4. The diameter of the casing 2 is DN50~80mm, and the diameter of the convex flange 2-4 is DN50~80mm. The casing wall 2-2 is provided with multiple flushing holes 2-1 with a hole diameter of 5~8mm. Each row of holes is arranged alternately, and the flushing connection pipe 2-3 and the flushing hole 2-1 retain a distance of 100~200mm.

[0021] Refer to the attached Figure 2 A flushing pipe 2-3 is welded on the side of the convex flange 2-4 close to the casing 2, and the diameter of the flushing pipe 2-3 is DN20~32mm.

[0022] Refer to the attached Figure 1 The casing 2 is vertically welded to the wall of the tar storage tank 6 , and all the flushing holes 2 - 1 on the casing 2 are located inside the tar storage tank 6 , and there are no flushing holes 2 - 1 outside the wall of the tar storage tank 6 .

[0023] The working process of the utility model is as follows:

[0024] When tar is loaded for export, the flushing valve 3 is opened to allow a small amount of hot tar to enter the sleeve 2, and the tar residue on the thermal resistor protection sleeve 2 is flushed with pressurized tar. Under the action of tar flushing and the dissolution of tar itself, the tar residue on the thermal resistor protection sleeve 2 is removed, and the tar and tar residue are discharged into the tar storage tank 6 through the flushing hole 2-1. After cleaning, the flushing valve 3 is closed, and the tar in the tar storage tank 6 can flow freely in and out of the sleeve 2 through the flushing hole 2-1, ensuring the accuracy of the thermal resistor measuring the temperature of the tar storage tank.

[0025] The utility model utilizes the tar stored in the tar storage tank to clean the temperature measuring element, has a simple structure, does not need to stop production, does not need external force, and effectively solves the problem of temperature measurement inaccuracy caused by the adhesion of tar residues to the thermal resistor.

[0026] An embodiment of the present utility model is as follows:

[0027] Tar storage tank 6 has a diameter of DN14200mm and a height of 13865mm;

[0028] Thermal resistor 1 model WZP-430-DN80 PN1.6 / 316L-1000 / 850;

[0029] Casing 2 diameter DN80mm, length L1100mm, matching flange DN80mm, flushing hole diameter 5mm, carbon steel;

[0030] Flushing pipe 2-3 diameter DN25mm, carbon steel;

[0031] Flush valve 3 model Z41H-16C, DN25mm.

Claims

1. A self-cleaning tar storage tank temperature measuring device, characterized in that: The invention comprises a thermal resistor (1), a casing (2), a flushing pipe (4), a tar loading pump (5), a tar storage tank (6) and a tar car (7), wherein one end of the casing (2) is a closed end and the other end is welded with a convex flange (2-4), a plurality of flushing holes (2-1) and a flushing pipe (2-3) are provided on the casing wall (2-2), the casing (2) is fixed on the tar storage tank (6) in a horizontal state, the closed end of the casing (2) and the flushing holes (2-1) on the casing wall (2-2) are both located inside the tar storage tank (6), the thermal resistor (1) is inserted into the casing (2), and the flushing pipe (2-3) on the casing wall (2-2) is connected to the outlet pipe of the tar loading pump (5) through the flushing pipe (4).

2. A self-cleaning tar storage tank temperature measuring device according to claim 1, characterized in that: The sleeve (2) is fixed in a horizontal state at the lower part of the tar storage tank (6).

3. A self-cleaning tar storage tank temperature measuring device according to claim 1, characterized in that: The plurality of flushing holes (2-1) on the casing wall (2-2) are arranged in a staggered manner.

4. A self-cleaning tar storage tank temperature measuring device according to claim 1, characterized in that: A flushing valve (3) is provided on the flushing connecting pipe (2-3) on the casing wall (2-2).

5. A self-cleaning tar storage tank temperature measuring device according to claim 1, characterized in that: The flushing connection pipe (2-3) and the raised flange (2-4) on the casing wall (2-2) are located outside the tar storage tank (6).

6. A self-cleaning tar storage tank temperature measuring device according to claim 1, characterized in that: The thermal resistor (1) is connected to the convex flange (2-4) of the sleeve (2).

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