Constant volume combustion bomb heating system

Abstract

The utility model discloses a heating system for a constant-volume combustion bomb, which solves the problems that in the prior art, the internal heating of the constant-volume combustion bomb is ignited due to incandescent heat, and the external heating of the constant-volume combustion bomb is longer in heating time, and has the beneficial effects that the heating efficiency is improved, and the heating speed is high. Comprising a premixing box and a first heating piece, the first heating piece is arranged on the outer side of the constant-volume combustion bomb, the premixing box is provided with an air inlet, a second heating piece is arranged in the premixing box, a rotating piece is arranged in the premixing box to accelerate flowing of air, the premixing box is communicated with the constant-volume combustion bomb, and the first heating piece and the second heating piece are connected with a controller.

Description

TECHNICAL FIELD

[0001] The utility model relates to constant volume combustion technical field especially a constant volume combustion bomb heating system. BACKGROUND

[0002] The statements in this part only provide background technical information related to the utility model and do not necessarily constitute prior art.

[0003] With the continuous advancement of carbon emission reduction, using renewable hydrogen and its derivatives as zero-carbon fuel to replace traditional fossil fuel gradually becomes an effective way for industry to deeply decarbonize. Under this background, the development of hydrogen gas turbine is attracting more and more attention. Compared with coal-fired power generation, hydrogen gas turbine is more efficient, and has the flexibility advantage of traditional gas turbine, can be frequently started and stopped, quickly responds, and forms a good complement with fluctuating renewable energy power, and its unit size varies from kilowatt to hundreds of megawatts, which can be flexibly applied to distributed and centralized energy supply scenarios, and helps decarbonization and emission reduction in power, transportation, industry, building and other industries.

[0004] And the constant volume combustion bomb system is an important experimental tool for simulating the combustion process of gas turbine. In order to more truly reflect the combustion situation inside the engine and explore the influence of initial temperature on the combustion flame characteristics, the initial temperature of premixed gas needs to be controllable, and the initial temperature of premixed gas is generally adjusted by internal heating and external heating of constant volume combustion bomb.

[0005] Internal heating is achieved by heating the rod into the constant volume combustion bomb body to directly heat the mixed gas, but this heating method will produce incandescent ignition phenomenon, and the heating device will affect the gas flow and heating condition in the constant volume combustion bomb.

[0006] External heating is to indirectly heat the internal gas by heating the constant volume combustion bomb body, which can avoid incandescent ignition phenomenon, but the disadvantage is that the constant volume combustion bomb body wall is thick, the temperature propagation is slow, and the waiting time is long. UTILITY MODEL CONTENTS

[0007] In view of the deficiencies in the prior art, the utility model aims to provide a constant volume combustion bomb heating system, which can effectively avoid incandescent ignition phenomenon in the constant volume combustion bomb.

[0008] In order to achieve the above purpose, the utility model is realized by the following technical scheme:

[0009] A constant volume combustion bomb heating system, comprising a premixing box and a first heating element, the first heating element is arranged outside the constant volume combustion bomb, the premixing box has an air inlet, a second heating element is arranged inside the premixing box, a rotating element is arranged in the premixing box to accelerate the flow of gas, the premixing box is communicated with the constant volume combustion bomb, the first heating element and the second heating element are connected with the controller respectively.

[0010] The constant volume combustion bomb heating system as described above further comprises a nozzle, the nozzle is installed on the constant volume combustion bomb, a nozzle head of the nozzle is located inside the constant volume combustion bomb, and the nozzle is communicated with the premixing box.

[0011] The constant volume combustion bomb heating system as described above further comprises a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged on the constant volume combustion bomb, the second temperature sensor is installed on the premixing box, and the first temperature sensor and the second temperature sensor are separately connected with the controller.

[0012] The constant volume combustion bomb heating system as described above, the first temperature sensor is arranged through the constant volume combustion bomb, and the second temperature sensor is arranged through the premixing box.

[0013] The constant volume combustion bomb heating system as described above, the first heating element is arranged in the circumferential direction of the constant volume combustion bomb, and the first heating element is a heating belt, which is wound around the constant volume combustion bomb in multiple turns.

[0014] The constant volume combustion bomb heating system as described above, the second heating element is arranged inside the premixing box.

[0015] The constant volume combustion bomb heating system as described above, two second heating elements are oppositely arranged on the inner wall of the premixing box, and the second heating element is a heating plate, and the rotating element is arranged between the two second heating elements.

[0016] The constant volume combustion bomb heating system as described above, one of the second heating elements is arranged at the air inlet end of the premixing box, and the other second heating element is arranged at the air outlet end of the premixing box, and the rotating element is arranged on the inner wall between the two second heating elements, so that the rotating element is located between the two second heating elements.

[0017] The constant volume combustion bomb heating system as described above, the premixing box and the constant volume combustion bomb are communicated through a pipeline, the pipeline is provided with an air inlet valve, and the air inlet valve is connected with the controller.

[0018] The constant volume combustion bomb heating system as described above, the rotating element is a fan.

[0019] The beneficial effects of the above-mentioned utility model are as follows:

[0020] 1) The utility model discloses a premixing box is provided with the second heating part, and the gas that enters the premixing box is heated first, and the first heating part is used for the gas that enters the constant volume combustion bomb to heat again, thereby realizing the mode that the premixing box and constant volume combustion bomb are heated, can effectively shorten the heating time, and the phenomenon that the internal ignition of constant volume combustion bomb is avoided again.

[0021] 2) The utility model discloses a premixing box is provided with the second heating part, and the gas that enters the premixing box is heated first, and the first heating part is used for the gas that enters the constant volume combustion bomb to heat again, thereby realizing the mode that the premixing box and constant volume combustion bomb are heated, can effectively shorten the heating time, and the phenomenon that the internal ignition of constant volume combustion bomb is avoided again.

[0022] 3) The utility model discloses a premixing box is provided with the second heating part, and the gas that enters the premixing box is heated first, and the first heating part is used for the gas that enters the constant volume combustion bomb to heat again, thereby realizing the mode that the premixing box and constant volume combustion bomb are heated, can effectively shorten the heating time, and the phenomenon that the internal ignition of constant volume combustion bomb is avoided again.

[0023] 4) The utility model discloses a premixing box is provided with the second heating part, and the gas that enters the premixing box is heated first, and the first heating part is used for the gas that enters the constant volume combustion bomb to heat again, thereby realizing the mode that the premixing box and constant volume combustion bomb are heated, can effectively shorten the heating time, and the phenomenon that the internal ignition of constant volume combustion bomb is avoided again. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings accompanying the specification of the utility model form a part thereof, serve to provide further understanding of the utility model, and together with the specification explain the utility model. The description of the utility model's illustrative embodiments and its explanation serve to explain the utility model, and do not constitute improper limitation on the utility model.

[0025] Figure 1 It is the schematic diagram of the constant volume combustion bomb heating system of the utility model according to one or more embodiments.

[0026] In the drawing: the mutual distance or size is exaggerated for showing the position of each part, and the schematic diagram is only illustrative.

[0027] Wherein: 1. air inlet, 2. heating plate, 3. fan, 4. air inlet valve, 5. constant volume combustion bomb, 6. premixing box, 7. second temperature sensor, 8. controller, 9. first temperature sensor, 10. heating belt. DETAILED DESCRIPTION

[0028] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise expressly indicated by the present invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] As described in the background section, existing technologies for constant-volume incendiary bombs suffer from problems such as incandescence ignition during internal heating and excessively long heating times during external heating. To address these technical issues, this invention proposes a constant-volume incendiary bomb heating system.

[0031] Example 1

[0032] In a typical embodiment of this utility model, refer to Figure 1 As shown, a constant volume combustion bomb heating system includes a premixing chamber 6 and a first heating element. The first heating element is arranged on the outside of the constant volume combustion bomb. The premixing chamber 6 has an air inlet 1. The premixing chamber 6 is equipped with a second heating element. A rotating element is arranged inside the premixing chamber 6 to accelerate the flow of gas. The premixing chamber 6 is connected to the constant volume combustion bomb 5. The first heating element and the second heating element are respectively connected to a controller 8.

[0033] It should be noted that the system also includes a first temperature sensor 9 and a second temperature sensor 7. The first temperature sensor 9 is arranged in the constant volume combustion bomb 5, and the second temperature sensor 7 is installed in the premixing tank 6. The first temperature sensor 9 and the second temperature sensor 7 are each connected to the controller separately.

[0034] The first temperature sensor 9 is installed through the constant volume combustion bomb 5, and the second temperature sensor 7 is installed through the premixing box 6.

[0035] Understandably, the first heating element is arranged in the circumference of the constant volume incendiary bomb. The first heating element is a heating belt 10, which is wound around the constant volume incendiary bomb multiple times. The heating belt is equipped with a first switch on the controller to control the start and stop of the first heating element.

[0036] In this embodiment, the second heating element is disposed inside the premixing tank 6.

[0037] The premixing box 6 can be a box body, and the premixing box 6 is fixed to the side of the constant-volume combustion bomb 5. The premixing box 6 is provided with an air inlet 1 on one side, and an air outlet is arranged on the opposite side of the air inlet. Two second heating elements are arranged on the inner side wall of the premixing box 6. The second heating element is a heating plate. The rotating element is arranged between the two second heating elements. The heating plate 2 is arranged around the air inlet 1 and the air outlet. That is, one of the second heating elements is arranged at the air inlet end of the premixing box 6, and the other second heating element is arranged at the air outlet end of the premixing box 6. The rotating element is arranged on the inner side wall between the two second heating elements.

[0038] Of course, in other examples, the heating plate 2 can also be arranged at the bottom or other side of the premixing box 6.

[0039] It should be noted that the heating plate 2 includes a fixed plate fixed to the inner side wall of the premixing box. The fixed plate is provided with a heating resistance wire. The heating resistance wire is provided with a second switch. The second switch is connected to the controller.

[0040] It is easy to understand that the air outlet of the premixing box 6 is communicated with the constant-volume combustion bomb 5 through a pipeline. The pipeline is provided with an air inlet valve 4. The air inlet valve 4 is connected to the controller. The controller can be an existing PLC controller or other type of controller. The controller is provided with a display screen. The controller can also be replaced by an existing temperature controller. The controller or the temperature controller is connected to the first temperature sensor, the first heating element, the second temperature sensor, and the second heating element, respectively.

[0041] Specifically, the first temperature sensor 9 and the second temperature sensor 7 are first and second thermocouples.

[0042] The heating plate 2 is connected to the controller 8. The controller 8 sets the heating temperature of the premixing box 6. The controller 8 receives the electric signal from the second temperature sensor and compares it with the set temperature. Then, the controller 8 outputs an adjustment signal to the second switch of the heating plate 2. After receiving the signal, the second switch makes an ON / OFF action. If the temperature obtained by the second temperature sensor 7 is lower than the set value, the second switch will output ON to control the second switch to be powered on. If the temperature is higher than the set value, the second switch will output OFF to cut off the second switch. In this way, the temperature of the premixing box is kept at the set temperature by repeating the ON / OFF operation according to the set value.

[0043] The constant volume combustion bomb 5 is connected with the controller 8, the target temperature of the constant volume combustion bomb 5 is set through the controller 8, the first temperature sensor 9 returns the temperature value to the controller and displays through the display, when the actual temperature collected in the constant volume combustion bomb 5 is less than the given target temperature, the controller controls the heating belt to continue to supply power, so that the constant volume combustion bomb 5 is heated, when the actual temperature collected in the constant volume combustion bomb is equal to the given target temperature, the controller automatically disconnects the first switch to cut off the power supply of the heating belt, the heating belt stops heating, the constant volume combustion bomb 5 enters the non-heating state, and when the actual temperature is less than the target temperature again, heating is carried out again.

[0044] In the embodiment, the rotating member is a fan 3, the fan 3 is also connected with the controller, the opening or disconnection of the fan 3 is controlled by the controller, the fan is installed on the side wall of the premixing box, and the fan blades of the fan are located in the premixing box 6 and between the two heating plates.

[0045] The heating system provided in the embodiment can quickly and accurately control the hydrogen fuel temperature, simultaneously reduces the change of the gas intake caused by the temperature difference when the gas flows from the premixing box into the constant volume combustion bomb, and will not affect the gas flow in the constant volume combustion bomb.

[0046] Embodiment two

[0047] The difference between the embodiment and the embodiment one is that:

[0048] The heating system further comprises a nozzle, the nozzle is installed on the constant volume combustion bomb 5, the nozzle head of the nozzle is located in the constant volume combustion bomb, the nozzle is communicated with the outlet end of the premixing box through a pipeline, and the gas in the premixing box enters the constant volume combustion bomb through the nozzle, so that the gas forms a turbulent flow and enters the constant volume combustion bomb to carry out a turbulent combustion experiment.

[0049] The above only describes the preferred embodiments of the utility model and is not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A constant volume bomb heating system, characterized by, The device comprises a premixing box and a first heating element, the first heating element is arranged outside the constant volume combustion bomb, the premixing box has an air inlet, a second heating element is arranged inside the premixing box, a rotating element is arranged in the premixing box to accelerate the flow of gas, the premixing box is communicated with the constant volume combustion bomb, the first heating element and the second heating element are connected with the controller respectively.

2. A constant volume bomb heating system according to claim 1, wherein, The device further comprises a nozzle, the nozzle is installed on the constant volume combustion bomb, the nozzle head of the nozzle is located inside the constant volume combustion bomb, and the nozzle is communicated with the premixing box.

3. A constant volume bomb heating system according to claim 1, wherein, The device further comprises a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged on the constant volume combustion bomb, the second temperature sensor is installed on the premixing box, and the first temperature sensor and the second temperature sensor are connected with the controller respectively.

4. A constant volume bomb heating system according to claim 1, wherein, The first temperature sensor is arranged through the constant volume combustion bomb, and the second temperature sensor is arranged through the premixing box.

5. A constant volume bomb heating system according to claim 1, wherein, The first heating element is arranged in the circumferential direction of the constant volume combustion bomb, the first heating element is a heating belt, and the heating belt is wound around the constant volume combustion bomb and arranged with multiple turns.

6. A constant volume bomb heating system according to claim 1, wherein, The second heating element is arranged inside the premixing box.

7. A constant volume bomb heating system according to claim 1, wherein The second heating element is arranged in two places, the two second heating elements are oppositely arranged on the inner wall of the premixing box, the second heating element is a heating plate, and the rotating element is arranged between the two second heating elements.

8. A constant volume bomb heating system according to claim 7, wherein, One of the second heating elements is arranged at the air inlet end of the premixing box, and the other second heating element is arranged at the air outlet end of the premixing box, the rotating element is installed on the inner wall between the two second heating elements, so that the rotating element is located between the two second heating elements.

9. A constant volume bomb heating system according to claim 1, wherein, The premixing box and the constant volume combustion bomb are communicated through a pipeline, the pipeline is provided with an air inlet valve, and the air inlet valve is connected with the controller.

10. A constant volume bomb heating system according to claim 1, wherein, The rotating element is a fan.

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