CN215495622U

CN215495622U - Improved hydrogen combustion flame blue demonstration device

Info

Publication number: CN215495622U
Application number: CN202121870648.6U
Authority: CN
Inventors: 叶一勤
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-01-11
Anticipated expiration: 2031-08-11

Abstract

An improved hydrogen combustion flame blue demonstration device comprises a three-mouth double-layer flask and a spherical condenser pipe, wherein the three-mouth double-layer flask comprises an inner cylinder, an outer cylinder, a left bottle mouth, a middle bottle mouth and a right bottle mouth; the lower part of the spherical condenser pipe is provided with a first glass piston, the lower end pipe orifice of the spherical condenser pipe is vertically sleeved on the middle bottle orifice of the three-mouth double-layer flask, the side surface of the lower part of the interlayer of the spherical condenser pipe is provided with a water inlet or a water outlet, and the water inlet or the water outlet is sealed by a rubber head. The utility model skillfully uses the three-mouth double-layer flask to rapidly cool the reactant, reduces the temperature when hydrogen is generated, and ensures that the flame in the whole hydrogen combustion process is mainly blue; and the lower end part of the spherical condenser pipe is provided with a glass piston I to control the start and the end of hydrogen combustion, so that the potential safety hazard of pressure increase caused by continuous generation of hydrogen is prevented.

Description

Improved hydrogen combustion flame blue demonstration device

Technical Field

The utility model relates to a chemical experiment color device, in particular to an improved hydrogen combustion flame blue demonstration device.

Background

The patent of the present applicant's invention of the chinese utility model with the publication number CN 211555285U is a demonstration apparatus capable of observing the blue flame of hydrogen combustion, comprising a conical flask, a spherical condenser tube and an igniter, wherein the spherical condenser tube is vertically sleeved above the conical flask, a plurality of bulk zinc sheets and a plurality of dilute sulfuric acid with the concentration of 1.2g/mL are installed in the conical flask, the interlayer of the spherical condenser tube is filled with cold water, a water inlet or a water outlet is arranged on the lower side surface of the interlayer of the spherical condenser tube, the water inlet or the water outlet is sealed by a rubber head, and the igniter is close to the upper end pipe orifice of the condenser tube and is used for igniting the hydrogen generated by the reaction of the zinc sheets and the dilute sulfuric acid.

The above demonstration device has the following disadvantages in practical use: firstly, the heat that dilute sulphuric acid and zinc sheet reaction in the erlenmeyer flask released can't give off fast, leads to hydrogen combustion earlier stage flame still to be yellow. Secondly, the start and the end of combustion cannot be flexibly controlled, and potential safety hazards exist. In the demonstration, the burning is generally extinguished by plugging the glass plug into the pipe orifice of the spherical condensation pipe, but along with the extinguishing of the burning, the temperature is reduced, the glass plug cannot be smoothly taken out from the pipe orifice, and the hydrogen in the conical flask is continuously generated and cannot be smoothly discharged, so that potential safety hazards exist in the increase of the air pressure. In addition, the hydrogen combustion flame of the above demonstration device was difficult to observe a distinct bluish color under bright conditions.

Disclosure of Invention

The utility model provides an improved hydrogen combustion flame blue demonstration device, which aims to solve the defects that the flame is still yellow in the early stage of hydrogen combustion, the start and the end of combustion cannot be flexibly controlled, and potential safety hazards exist in the existing hydrogen combustion flame demonstration device due to the fact that heat released by reaction cannot be rapidly dissipated.

The utility model adopts the following technical scheme:

an improved hydrogen combustion flame blue demonstration device comprises a hydrogen generation device and a hydrogen condensation and combustion device, wherein the hydrogen generation device comprises a three-mouth double-layer flask, the three-mouth double-layer flask comprises an inner cylinder, an outer cylinder, a left bottle mouth, a middle bottle mouth and a right bottle mouth, the inner cylinder is used as a reactor, reactants for generating hydrogen are filled in the inner cylinder, the outer cylinder is filled with cooling water for cooling the inner cylinder, the middle bottle mouth and the right bottle mouth are respectively communicated with the inner cylinder, and the left bottle mouth is communicated with the outer cylinder; the gas condensation and combustion device comprises a spherical condensation pipe, a first glass piston for controlling the start and the end of hydrogen combustion is arranged at the lower part of the spherical condensation pipe, a pipe orifice at the lower end of the spherical condensation pipe is vertically sleeved at the middle bottle orifice of the three-mouth double-layer flask, a water inlet or a water outlet is arranged on the side surface of the lower part of the interlayer of the spherical condensation pipe, the water inlet or the water outlet is sealed by a rubber head, and a pipe orifice at the upper end of the spherical condensation pipe is used as a hydrogen ignition pipe orifice.

Furthermore, the demonstration device also comprises a hydrogen purification and tail gas treatment device, the hydrogen purification auxiliary device comprises a glass adapter, a rubber tube and a beaker filled with a detergent aqueous solution, a glass piston II is arranged on the glass adapter, one end of the glass adapter is sleeved on the right bottle mouth of the three-mouth double-layer flask, and the other end of the glass adapter is connected with the rubber tube and inserted into the detergent aqueous solution of the beaker.

Furthermore, the demonstration device also comprises a gas combustion observation port, wherein the gas combustion observation port is arranged at the pipe orifice at the upper end of the spherical condensation pipe and is made of black refractory materials.

Preferably, the gas combustion observation port is a three-way pipe made of black plastic materials, the lower port of the three-way pipe is sleeved on the outer wall of the pipe orifice at the upper end of the spherical condensation pipe, the middle port of the three-way pipe serves as a hydrogen flame combustion observation port, and the upper port of the three-way pipe is blocked by a rubber plug.

As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

1. according to the improved demonstration device, the reactant is cooled rapidly by skillfully using the three-mouth double-layer flask, the temperature during hydrogen generation is reduced, and the flame in the whole hydrogen combustion process is ensured to be mainly blue; and the lower end part of the spherical condenser pipe is provided with a glass piston I to replace a glass plug at the upper port of the spherical condenser pipe, so that the start and the end of hydrogen combustion are controlled, the potential safety hazard of pressure increase caused by continuous generation of hydrogen is prevented, and the safe operation of an experiment is ensured.

2. The improved demonstration device is characterized in that a gas combustion observation port made of black refractory material is sleeved on the outer wall of the upper end pipe orifice of the spherical condensation pipe, so that strong light interference can be shielded, and hydrogen combustion flame can be observed to be obviously blue flame under a bright condition.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth below in order to provide a thorough understanding of the present invention, but it will be apparent to those skilled in the art that the present invention may be practiced without these details.

An improved hydrogen combustion flame blue demonstration device, which is shown in a figure 1 and a figure 2, comprises a hydrogen generating device and a hydrogen condensing and combusting device. The hydrogen generating device is a three-mouth double-layer flask 10, the three-mouth double-layer flask 10 comprises an inner cylinder 11, an outer cylinder 12, a left bottle mouth 13, a middle bottle mouth 14 and a right bottle mouth 15, the inner cylinder 11 is used as a reactor, and zinc particles and dilute sulfuric acid are filled in the inner cylinder; the outer cylinder 12 contains cooling water for cooling the reaction liquid to control the generation temperature of hydrogen gas. The middle bottle mouth 14 of the three-mouth double-layer flask 10 is communicated with the inner cylinder 11 and is used for adding reactants into the inner cylinder 11 and discharging hydrogen. The left bottle mouth 13 is communicated with the outer cylinder 12, and the left bottle mouth 13 is used as a bottle mouth for adding cooling water into the outer cylinder 12; the right bottle opening 15 is communicated with the inner cylinder 11, and the right bottle opening 14 is used for pouring gas to carry out purification and tail gas treatment.

The gas condensing and burning device is a spherical condenser pipe 20, and the effective height thereof is 120mm, and the effective height refers to a part with a spherical shape. The upper pipe orifice of the spherical condenser pipe 20 is used for burning hydrogen without grinding treatment, so that the flame color can be observed conveniently. The lower part of the spherical condensation pipe 20 is provided with a glass piston I21 for controlling the start and the end of the hydrogen combustion. The lower end pipe orifice of the spherical condenser pipe 20 is vertically sleeved on the middle bottle orifice of the three-mouth double-layer flask 10, the interlayer of the spherical condenser pipe 20 is filled with cold water, the lower side surface of the interlayer of the spherical condenser pipe is provided with a water inlet 22 (or a water outlet), and the water inlet 22 or the water outlet is sealed by a rubber head 23.

Referring to fig. 1, the demonstration device further comprises a hydrogen purifying and tail gas treating device, the hydrogen purifying auxiliary device comprises a glass adapter 31, a rubber tube 32 and a beaker 33 filled with a detergent water solution, a glass piston II 311 is arranged on the glass adapter 31, one end of the glass adapter 31 is sleeved on the right bottle mouth 15 of the three-mouth double-layer flask, and the other end of the glass adapter is connected with the rubber tube 32 and is inserted into the detergent water solution of the beaker 33.

Referring to fig. 1 and 2, the demonstration apparatus of the present invention further comprises a gas combustion observation port 40, wherein the gas combustion observation port 40 is made of black refractory material and is installed at the upper end opening of the spherical condensation duct 20. The gas combustion observation port 40 is a three-way pipe made of black plastic material, the lower port 41 of the three-way pipe is sleeved on the outer wall of the upper-end pipe orifice of the spherical condensation pipe 20, the middle port 42 is used as a hydrogen flame combustion observation port, and the upper port 43 is blocked by a rubber plug 44.

The utility model discloses a concrete demonstration operation process as follows:

1. preparation of the medicine: weighing 13.0 g of zinc particles, putting the zinc particles into a beaker, adding 3.0 g of ferrous sulfate powder, adding 50ml of distilled water, stirring and standing for 30 minutes, filtering and washing the zinc particles for later use. The purpose of using ferrous sulfate to treat zinc particles is to form a zinc-iron primary battery, accelerate the reaction rate and enable the generated hydrogen to be smoothly combusted at the pipe orifice of the spherical condenser pipe. Meanwhile, dilute sulphuric acid with the concentration of 1.20g/mL (25 ℃) is prepared for standby; and preparing a liquid detergent aqueous solution for later use.

2. Adding cooling water into the outer cylinder: and adding cooling water into the left bottle mouth of the three-mouth double-layer flask until the outer cylinder is filled, and then plugging the bottle mouth with a glass plug.

3. And (3) checking the air tightness: after the instrument is assembled according to the figure 1 (the black plastic three-way pipe is not installed at first), the glass piston II of the right bottle opening of the three-neck flask is closed, the glass piston I is opened, and water is added to the middle part of the condensing pipe from the pipe opening of the spherical condensing pipe. After a period of time, if the inner cylinder of the three-mouth double-layer flask is not filled with liquid and the liquid level in the condensation pipe is kept unchanged, the airtightness of the device is good.

4. Purification of hydrogen gas: at the beginning of the experiment, the spherical condenser tube was removed, zinc granules treated with ferrous sulfate were placed in a three-necked flask, 50mL of dilute sulfuric acid having a density of 1.20g/mL (25 ℃) was poured, and the spherical condenser tube was inserted. And opening the second glass piston, closing the first glass piston, stopping continuously emitting gas from the beaker to form bubbles after the reaction starts, and approaching the bubbles by using an ignition gun, wherein the bubbles are not combusted due to the discharged air. After a period of time, the bubbles are accelerated to continuously burst out, and after the bubbles are ignited, obvious detonation is generated, which indicates that the hydrogen is not pure. The sound was a sudden "puff" until ignition, indicating that the hydrogen was already pure.

5. Combustion of hydrogen and flame color observation: after the purification, the first glass piston is opened, the second glass piston is closed, an ignition gun is close to the pipe orifice of the condensation pipe, and hydrogen is combusted after a deep and stuffy detonation. The hydrogen-burning blue flame was observed in the case of ambient light which was not very strong, but only a faint bluish color was observed in the case of a bright environment. In order to shield the interference of strong light to blue flame, a black plastic three-way pipe is sleeved above the burning flame, and the obvious blue flame can be observed in a bright environment by observing through the middle opening of the three-way pipe.

6. And (3) tail gas treatment: and after the experiment is finished, opening a second glass piston of the right bottle mouth of the three-mouth double-layer flask, closing the first glass piston, and introducing the hydrogen tail gas into the liquid detergent aqueous solution to form hydrogen bubbles. The ignition method is used for processing the hydrogen bubbles, so that the experimental safety is ensured.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims

1. The utility model provides a modified hydrogen combustion flame is blue presentation device, includes hydrogen generating device, hydrogen condensation and burner, its characterized in that: the hydrogen generating device comprises a three-mouth double-layer flask, the three-mouth double-layer flask comprises an inner cylinder, an outer cylinder, a left bottle mouth, a middle bottle mouth and a right bottle mouth, the inner cylinder is used as a reactor, reactants for generating hydrogen are filled in the inner cylinder, the outer cylinder is filled with cooling water for cooling the inner cylinder, the middle bottle mouth and the right bottle mouth are respectively communicated with the inner cylinder, and the left bottle mouth is communicated with the outer cylinder; the hydrogen condensing and burning device comprises a spherical condensing pipe, a first glass piston for controlling the start and the end of hydrogen burning is arranged at the lower part of the spherical condensing pipe, a pipe orifice at the lower end of the spherical condensing pipe is vertically sleeved at the middle bottle orifice of the three-mouth double-layer flask, a water inlet or a water outlet is arranged on the side surface of the lower part of the interlayer of the spherical condensing pipe, the water inlet or the water outlet is sealed by a rubber head, and a pipe orifice at the upper end of the spherical condensing pipe is used as a hydrogen ignition pipe orifice.

2. An improved hydrogen combustion flame bluish presentation device as claimed in claim 1, wherein: the hydrogen purification auxiliary device comprises a glass switching port, a rubber tube and a beaker filled with detergent aqueous solution, a glass piston II is arranged on the glass switching port, one end of the glass switching port is sleeved on a right bottle mouth of the three-mouth double-layer flask, and the other end of the glass switching port is connected with the rubber tube and inserted into the detergent aqueous solution of the beaker.

3. An improved hydrogen combustion flame bluing demonstration apparatus according to claim 1 or 2 wherein: still include a gas combustion viewing aperture, gas combustion viewing aperture install in the upper end mouth of pipe department of spherical condenser pipe, this gas combustion viewing aperture adopts black refractory material to make.

4. An improved hydrogen combustion flame bluing demonstration apparatus according to claim 3 wherein: the gas combustion observation port is a three-way pipe made of black plastic materials, the lower port of the three-way pipe is sleeved on the outer wall of the pipe orifice at the upper end of the spherical condensation pipe, the middle port of the three-way pipe serves as a hydrogen flame combustion observation port, and the upper port of the three-way pipe is blocked by a rubber plug.