Electrode preheater

Abstract

The utility model relates to the technical field of electrode gas preheating, in particular to an electrode preheater. A preheating furnace pipe is installed in the shell and provided with a heating containing cavity, a gas pipeline is arranged in the preheating furnace pipe in a penetrating mode, the gas pipeline is divided into straight pipe parts and coil pipe parts, the straight pipe parts are located at the two ends of the preheating furnace pipe, the coil pipe parts are located in the heating containing cavity of the preheating furnace pipe, and heating wires are installed in the heating containing cavity of the preheating furnace pipe. The coil pipe part is located in the heating containing cavity, and the pipeline in the hearth is a coil pipe, so that the staying time of gas in the hearth is prolonged, the gas is fully heated, the temperature of the gas reaches the required requirement, meanwhile, the production cost and the size are reduced, the service life is long, damage is not prone to occurring, frequent maintenance and replacement are not needed, and the working efficiency is improved. And the surface temperature of the shell is low, so that the ambient temperature and the equipment are not influenced, and the service life of the test equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode gas preheating, in particular to an electrode preheater. Background Art

[0002] The existing gas heating of the electrodes (hydrogen electrode and oxygen electrode) uses heating rods for heating, but has the following disadvantages:

[0003] 1. The heating time of the existing heating rod is too short to heat the gas to the required temperature. If you want to heat the gas to the required temperature, you need to add a large number of heating rods, which will increase the production cost. At the same time, the overall volume of the equipment is large, and the heating rod is easily damaged and needs to be replaced frequently, which reduces work efficiency.

[0004] 2. When using a heating rod for heating, the surrounding temperature will also increase while heating, thus affecting surrounding equipment. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in order to solve the problems existing in the prior art in the above-mentioned background technology, an electrode preheater is provided which prolongs the time that the gas stays in the furnace, fully heats the gas, and reduces the surface temperature of the shell.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an electrode preheater, comprising a shell, a preheating furnace liner is installed in the shell, the preheating furnace liner has a heating accommodating cavity, a gas pipeline is passed through the preheating furnace liner, the gas pipeline is divided into a straight pipe part and a coil part, the straight pipe part is located at both ends of the preheating furnace liner, the coil part is located in the heating accommodating cavity of the preheating furnace liner, a heating wire is installed in the heating accommodating cavity of the preheating furnace liner, and the coil part is located in the heating accommodating cavity.

[0007] Furthermore, the shell includes an upper shell and a lower shell of the preheating furnace, and the upper shell and the lower shell of the preheating furnace are assembled together, and the connection between the upper shell and the lower shell of the preheating furnace is connected by a connecting piece.

[0008] Furthermore, a number of support frames are provided between the shell and the preheating furnace core.

[0009] Furthermore, the preheating furnace furnace includes an outer furnace and an inner furnace, the inner furnace is installed in the outer furnace, the length of the outer furnace is greater than the length of the inner furnace, one end of the inner furnace is installed with a furnace left end cover, and the other end of the inner furnace is installed with a furnace right end cover, the inner furnace, the furnace left end cover and the furnace right end cover form a heating accommodating chamber.

[0010] Furthermore, a preheating furnace outlet pipe temperature sensor is installed at the outlet end of the pipe, and the preheating furnace outlet pipe temperature sensor is connected to an external temperature control meter.

[0011] Furthermore, a heating wire power lead terminal and a preheating furnace junction box are installed on the top of the preheating furnace upper shell, and a preheating furnace junction box cover is arranged on the heating wire power lead terminal.

[0012] Furthermore, a preheating furnace temperature sensor is inserted into the shell and the preheating furnace hearth, and the lower end of the preheating furnace temperature sensor extends into the heating accommodating cavity.

[0013] Furthermore, the straight pipe portion at the right end of the gas pipeline is covered with a heating tape.

[0014] Beneficial effects of the utility model:

[0015] 1. The pipes in the furnace are coiled, which prolongs the time the gas stays in the furnace and fully heats the gas to reach the required temperature. This also reduces production costs and volume, has a long service life, is not easily damaged, does not require frequent maintenance and replacement, and improves work efficiency.

[0016] 2. The shell surface temperature is low, which will not affect the surrounding temperature and equipment, and improve the service life of the test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] In the figure: HP102-1. Gas pipeline, HP102-2. Preheating furnace lower shell, HP102-3. Left end cover of furnace liner, HP102-4. Preheating furnace liner, HP102-5. Heating wire connection power lead terminal, HP102-6. Preheating furnace temperature sensor, HP102-7. Right end cover of furnace liner, HP102-8. Preheating furnace upper shell, HP102-9. Preheating furnace outlet pipe temperature sensor, HP102-10. Preheating furnace junction box. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0022] like Figures 1-2The electrode preheater shown is used to heat the mixed gas. The preheating temperature control range is from room temperature to 500°C. It adopts electric heating and includes a shell. A preheating furnace core HP102-4 is installed in the shell. The preheating furnace core HP102-4 has a heating accommodating cavity. A gas pipeline HP102-1 is passed through the preheating furnace core HP102-4. The gas pipeline HP102-1 is divided into a straight pipe part and a coil part. The straight pipe part is located at both ends of the preheating furnace core HP102-4, and the coil part is located in the heating accommodating cavity of the preheating furnace core HP102-4, so that the gas stays in the preheating furnace longer and is fully heated. A heating wire is installed in the heating accommodating cavity of the preheating furnace core HP102-4, and the coil part is located in the heating accommodating cavity. The heating wire has the advantages of high temperature resistance, high insulation, and good thermal insulation performance.

[0023] The shell is made of sheet metal material, and the shell includes the upper shell HP102-8 of the preheating furnace and the lower shell HP102-2 of the preheating furnace. The upper shell HP102-8 of the preheating furnace and the lower shell HP102-2 of the preheating furnace are spliced ​​together from top to bottom, and the connection between the upper shell HP102-8 of the preheating furnace and the lower shell HP102-2 of the preheating furnace is connected by a connecting piece.

[0024] A plurality of support frames are provided between the shell and the preheating furnace core HP102-4, and a space is formed between the shell and the preheating furnace core HP102-4, thereby further insulating the preheating furnace core HP102-4 and ensuring the temperature inside the preheating furnace core HP102-4.

[0025] The preheating furnace furnace HP102-4 includes an outer furnace and an inner furnace. The inner furnace is installed in the outer furnace. The length of the outer furnace is greater than the length of the inner furnace. One end of the inner furnace is installed with a furnace left end cover HP102-3, and the other end of the inner furnace is installed with a furnace right end cover HP102-7. The inner furnace, the furnace left end cover HP102-3 and the furnace right end cover HP102-7 form a heating accommodating chamber.

[0026] The outlet end of the pipeline HP102-1 is installed with a preheating furnace outlet pipeline temperature sensor HP102-9, which is connected to an external temperature controller to monitor the temperature of the gas in the pipeline after being preheated by the heating wire.

[0027] The top of the preheating furnace upper shell HP102-8 is installed with a heating wire power lead terminal HP102-5 and a preheating furnace junction box HP102-10, and the preheating furnace junction box HP102-10 cover is set on the heating wire power lead terminal HP102-5.

[0028] A preheating furnace temperature sensor HP102-6 is inserted into the shell and the preheating furnace core HP102-4, which is connected to an external temperature control meter to control the temperature of the heating wire, and the lower end of the preheating furnace temperature sensor HP102-6 extends into the heating accommodating cavity.

[0029] The straight pipe section at the right end of the gas pipeline HP102-1 is covered with a heating tape to reduce the temperature drop of the gas after preheating. The pipeline from the outlet of the oxygen electrode preheater HP602 to the front of the fuel cell is wrapped with a heating tape to reduce the temperature drop of the gas after preheating.

[0030] Specifically, the preheating furnace core HP102-4 is preheated in advance, and the temperature in the heating chamber is detected by the preheating furnace temperature sensor HP102-6;

[0031] After reaching the preset temperature, the mixed gas enters the coil part of the preheating furnace HP102-4 from the left end of the gas pipe HP102-1 to be heated. At the same time, the preheating furnace temperature sensor HP102-6 detects the temperature in real time.

[0032] After heating is completed, the gas flows out from the right end of the gas pipe HP102-1 and enters the next process. At the same time, the preheating furnace outlet pipe temperature sensor HP102-9 monitors the temperature of the gas after preheating by the heating wire.

[0033] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. An electrode preheater, characterized in that: The invention comprises a shell, in which a preheating furnace liner (HP102-4) is installed. The preheating furnace liner (HP102-4) has a heating accommodating cavity. A gas pipeline (HP102-1) is passed through the preheating furnace liner (HP102-4). The gas pipeline (HP102-1) is divided into a straight pipe portion and a coil portion. The straight pipe portion is located at both ends of the preheating furnace liner (HP102-4). The coil portion is located in the heating accommodating cavity of the preheating furnace liner (HP102-4). A heating wire is installed in the heating accommodating cavity of the preheating furnace liner (HP102-4). The coil portion is located in the heating accommodating cavity.

2. The electrode preheater according to claim 1, characterized in that: The shell includes an upper shell (HP102-8) of the preheating furnace and a lower shell (HP102-2) of the preheating furnace. The upper shell (HP102-8) of the preheating furnace and the lower shell (HP102-2) of the preheating furnace are assembled together, and the connection between the upper shell (HP102-8) of the preheating furnace and the lower shell (HP102-2) of the preheating furnace is connected by a connecting piece.

3. The electrode preheater according to claim 1, characterized in that: A plurality of support frames are provided between the shell and the preheating furnace core (HP102-4).

4. The electrode preheater according to claim 1, characterized in that: The preheating furnace furnace (HP102-4) includes an outer furnace and an inner furnace. The inner furnace is installed in the outer furnace. The length of the outer furnace is greater than the length of the inner furnace. A furnace left end cover (HP102-3) is installed at one end of the inner furnace, and a furnace right end cover (HP102-7) is installed at the other end of the inner furnace. The inner furnace, the furnace left end cover (HP102-3) and the furnace right end cover (HP102-7) form a heating accommodating chamber.

5. The electrode preheater according to claim 1, characterized in that: The outlet end of the pipeline (HP102-1) is equipped with a preheating furnace outlet pipeline temperature sensor (HP102-9), and the preheating furnace outlet pipeline temperature sensor (HP102-9) is connected to an external temperature control meter.

6. The electrode preheater according to claim 2, characterized in that: The top of the preheating furnace upper shell (HP102-8) is equipped with a heating wire power lead terminal (HP102-5) and a preheating furnace junction box (HP102-10), and the preheating furnace junction box (HP102-10) is covered on the heating wire power lead terminal (HP102-5).

7. The electrode preheater according to claim 1, characterized in that: A preheating furnace temperature sensor (HP102-6) is inserted into the shell and the preheating furnace core (HP102-4), and the lower end of the preheating furnace temperature sensor (HP102-6) extends into the heating accommodating cavity.

8. The electrode preheater according to claim 1, characterized in that: The straight pipe portion at the right end of the gas pipeline (HP102-1) is covered with a heating tape.

Images