CN218267440U

CN218267440U - High temperature resistant ceramic flow control valve

Info

Publication number: CN218267440U
Application number: CN202222693809.XU
Authority: CN
Inventors: 王绍荣; 耿玉翠; 陈婷
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-01-10
Anticipated expiration: 2032-10-13

Abstract

The utility model belongs to the technical field of Solid Oxide Fuel Cells (SOFC), and relates to a high temperature resistant ceramic flow regulating valve, which comprises a valve body and a valve core, wherein the valve core is connected inside the valve body in a sliding way, the upper side and the lower side of the valve body are provided with a first outlet and a second outlet, and the two sides of the valve body are provided with an inlet and an adjusting gas inlet; the utility model discloses a high temperature flow control valve adopts the ceramic material preparation, and it has mechanical strength height, resistance to compression wear, hardness big, high temperature resistant melting, electric conductivity poor, advantage such as the heat conductivity is poor, and ceramic flow control valve has superior heat resistance, is applicable to SOFC's operating condition, but it adopts traditional processing mode to process comparatively difficultly, consequently adopts 3D printing technique to process. Because the ceramic material is a good 3D printing material, the connection and the matching of all parts of the valve are more precise by the processing mode, and the problem of flow regulation of the tail gas of the combustor in the SOFC combined heat and power system is solved.

Description

High temperature resistant ceramic flow control valve

Technical Field

The utility model belongs to the technical field of solid oxide fuel cell, a high temperature resistance pottery flow control valve is related to.

Background

A Solid Oxide Fuel Cell (SOFC) is a device that can directly convert chemical energy in fuel into electrical energy, and has a working temperature of 500 to 1000 ℃, and because of its high working temperature, SOFC can directly convert chemical energy into electrical energy with high efficiency through external or internal reforming reaction and electrochemical reaction in electrodes using hydrocarbon converted from fossil energy and biomass energy as fuel.

SOFC generates electricity and produces the waste heat, can realize the cogeneration of heat and electricity, through rational design and research SOFC cogeneration of heat and electricity system, can realize the cascade utilization of energy, make the system reach higher heat, electric efficiency, in order to realize effectual heat management, improve system efficiency, the flow control valve of combustor tail gas is essential equipment in the system, nevertheless the burning tail gas temperature is high, can reach 1000 ℃, present all kinds of metal regulating valves damage under high temperature easily and can not be suitable for this environment, consequently, this application provides a high temperature resistant ceramic flow control valve to above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistant pottery flow control valve to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

as a high temperature resistant ceramic flow control valve's an alternative, wherein: the high-temperature-resistant ceramic flow regulating valve comprises a valve body and a valve core, wherein the valve core is connected inside the valve body in a sliding mode, a first outlet and a second outlet are formed in the upper side and the lower side of the valve body, and an inlet and a regulating gas inlet are formed in the two sides of the valve body.

As a high temperature resistant ceramic flow control valve's an alternative, wherein: one side of the valve core is fixedly connected with a ceramic spring, and the other end of the ceramic spring is fixedly connected with the valve body.

As a high temperature resistant ceramic flow control valve's an alternative, wherein: the lower part of the ceramic spring is provided with a lug, and the outer side of the lug and the valve body are integrally arranged.

As a high temperature resistant pottery flow control valve's an alternative, wherein: and a flow sensor is arranged in the second outlet, and the outer side of the flow sensor is fixedly connected with the valve body.

As a high temperature resistant pottery flow control valve's an alternative, wherein: and an air pump is externally connected to the outer side of the adjusting air inlet of the valve body and used for supplying air.

As a high temperature resistant pottery flow control valve's an alternative, wherein: the valve body is manufactured in a 3D printing mode, and is integrally machined and molded by taking nano-scale or submicron-scale ceramic powder as a raw material.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a high temperature resistant flow control valve adopts ceramic material preparation, ceramic material has mechanical strength height, resistance to compression wear, hardness is big, high temperature resistant is resistant to melting, poor conductivity, characteristics such as heat conductivity are poor, it has superior heat resistance, be applicable to the operating mode of SOFC, though it is comparatively difficult to adopt traditional processing mode to process, but ceramic material (zirconia/carborundum) is fine 3D printing material, this kind of processing mode makes the connection and the cooperation of each part of valve more accurate, the flow control problem of combustor tail gas in the SOFC cogeneration system has been solved;

meanwhile, the arranged flow sensor provides a flow feedback signal to push the pressure of the adjusting gas to change, so that the valve core moves until the pressure of the spring is balanced with the pressure of the adjusting gas, the valve core stops moving, the gas flow is stable, the arranged convex block is used for preventing the valve core from excessively moving, and the ceramic spring protecting device has a certain effect of protecting the ceramic spring.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a valve body; 2. a valve core; 3. a first outlet; 4. a second outlet; 5. a flow sensor; 6. an inlet; 7. a regulated gas inlet; 8. a ceramic spring; 9. and (6) a bump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides a technical solution:

the utility model provides a high temperature resistant ceramic flow control valve, contains valve body 1 and case 2, and 1 inside sliding connection of above-mentioned valve body has case 2, and first export 3 and second export 4 have been seted up to the upper and lower both sides of above-mentioned valve body 1, and entry 6 and regulation gas entry 7 have been seted up to the both sides of above-mentioned valve body 1.

One side of the valve core 2 is fixedly connected with a ceramic spring 8, the other end of the ceramic spring 8 is fixedly connected with the valve body 1, when the valve body 1 works, the adjusting air inlet 7 needs to be externally connected with an air pump for air supply, when the first outlet 3 and the second outlet 4 are in a closed state, the ceramic spring 8 is in a compressed state, and the adjusting air pressure of the adjusting air inlet 7 keeps balance with the elastic force of the ceramic spring 8; when gas enters the valve body 1, the valve core 2 is pushed to move, the gas is discharged from the first outlet 3 and the second outlet 4, a feedback signal is provided by the flow sensor 5 of the first outlet 3, the gas pump is controlled by a controller (not shown in the figure) transmitted to the outside to push the pressure of the adjusting gas to change, the valve core 2 is moved until the pressure of the ceramic spring 8 is balanced with the pressure of the adjusting gas, the valve core 2 stops moving, and the gas flow is stable.

The lug 9 is arranged below the ceramic spring 8, the outer side of the lug 9 and the valve body 1 are integrally arranged, and the lug 9 is used for preventing the valve core 2 from excessively moving to cause the ceramic spring 8 to excessively extrude and be damaged.

The flow sensor 5 is arranged inside the second outlet 4, the outer side of the flow sensor 5 is fixedly connected with the valve body 1, and the flow sensor 5 is used for providing a feedback signal and transmitting the feedback signal to an external controller (not shown in the figure) to control the air pump to push and adjust the pressure change of the air.

An air pump is externally connected to the outer side of the adjusting air inlet 7 of the valve body 1 for supplying air.

The valve body 1 is manufactured by adopting a 3D printing mode, and the valve body 1 is integrally processed and molded by adopting nano-scale or submicron-scale ceramic powder as a raw material, so that the ceramic material has high mechanical strength; compression resistance and wear resistance; the hardness is high; high temperature resistance and melting resistance; poor conductivity; the heat conductivity is poor, and the like, and the heat-resistant material has excellent heat resistance and is suitable for the working conditions.

The circuits, electronic components and control modules involved in the present apparatus are all prior art and can be implemented by those skilled in the art, and it is not repeated here.

The working process comprises the following steps: when the valve body 1 works, the adjusting gas inlet 7 needs to be externally connected with a gas pump for supplying gas, the valve core 2 is pushed to move until the first outlet 3 and the second outlet 4 are completely closed, a working medium flows into the valve body 1 through the inlet to push the valve core 2 to move, the second outlet 4 and the first outlet 3 are successively opened, the flow sensor 5 of the second outlet 4 detects the flow, a flow signal is fed back to an external controller, the controller controls the gas pump and adjusts the pressure of the gas pump, so that the pressures on two sides of the valve core 2 are balanced, the flow of the second outlet 4 is stable, when the outlet flow of the first outlet 3 needs to be adjusted, a signal is fed back to the adjusting gas pump, the pressure at the adjusting gas inlet 7 is changed, the valve core 2 is moved, the size of the first outlet 3 can be increased or reduced, so that the flow of the second outlet 4 is adjusted, meanwhile, the valve body 1 is integrally processed and formed by adopting nano-grade or submicron-grade ceramic powder as a raw material, and has high mechanical strength; compression resistance and wear resistance; the hardness is high; high temperature resistance and melting resistance; poor conductivity; poor thermal conductivity, etc.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high temperature resistant ceramic flow control valve, contains valve body (1) and case (2), its characterized in that: the valve body (1) is internally and slidably connected with a valve core (2), a first outlet (3) and a second outlet (4) are formed in the upper side and the lower side of the valve body (1), and an inlet (6) and an adjusting gas inlet (7) are formed in the two sides of the valve body (1).

2. The refractory ceramic flow control valve of claim 1, wherein: one side of the valve core (2) is fixedly connected with a ceramic spring (8), and the other end of the ceramic spring (8) is fixedly connected with the valve body (1).

3. The refractory ceramic flow control valve of claim 2, wherein: a lug (9) is arranged below the ceramic spring (8), and the outer side of the lug (9) and the valve body (1) are integrally arranged.

4. The high temperature resistant ceramic flow control valve of claim 1, wherein: the inside of second export (4) is equipped with flow sensor (5), and flow sensor (5) outside is fixed connection with valve body (1).

5. The refractory ceramic flow control valve of claim 1, wherein: an air pump is externally connected to the outer side of the adjusting air inlet (7) of the valve body (1) for supplying air.

6. The high temperature resistant ceramic flow control valve of claim 1, wherein: the valve body (1) is manufactured in a 3D printing mode, and the valve body (1) is integrally machined and molded by taking nano-scale or submicron-scale ceramic powder as a raw material.