CN111677885B

CN111677885B - Flow regulating electric valve of ammonia spraying branch pipe

Info

Publication number: CN111677885B
Application number: CN202010565575.3A
Authority: CN
Inventors: 毕浩生; 丛日强; 赵亮; 白山; 李霞; 尹梓睿
Original assignee: Beijing Huixinying Energy Conservation And Environmental Protection Technology Co ltd; Shenyang Shanshui Original Environmental Protection Technology Co ltd
Current assignee: Beijing Huixinying Energy Conservation And Environmental Protection Technology Co ltd; Shenyang Shanshui Original Environmental Protection Technology Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2022-06-14
Anticipated expiration: 2040-06-19
Also published as: CN111677885A

Abstract

The invention relates to an ammonia injection branch pipe flow regulating electric valve, which belongs to the technical field of valves and comprises a regulating valve pipe body, a valve core, an optical axis, a sealing guide ring and a driving assembly; one end of the regulating valve body extends into the ammonia spraying main pipe and is connected with the ammonia spraying branch pipe in a sealing way, and the other end of the regulating valve body is positioned outside the ammonia spraying main pipe; a ventilation window is arranged on the regulating valve pipe body and is positioned in the ammonia spraying main pipe; the optical axis is arranged in the regulating valve tube body; one end of the optical axis is connected with the valve core, and the other end of the optical axis is connected with the driving assembly; the sealing guide ring is sleeved outside the optical axis, and the joint of the sealing guide ring and the optical axis with the regulating valve pipe body is arranged in a sealing manner; the driving assembly is used for driving the valve core to move along the axial direction of the regulating valve pipe body so as to change the opening degree of the window. The invention can more linearly and accurately regulate the fluid flow.

Description

Flow regulating electric valve of ammonia spraying branch pipe

Technical Field

The invention relates to the technical field of valves, in particular to an electric valve for adjusting flow of an ammonia spraying branch pipe.

Background

For the ammonia gas injection device, an ammonia gas main pipe is provided with a plurality of ammonia gas branch pipes, and the flow in each ammonia gas branch pipe needs to be accurately adjusted.

The traditional branch pipe regulating valve adopts a butterfly valve structure, the regulating precision and the regulated linear proportion are not good, and the requirement of regulating the air quantity with high precision cannot be met.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide an electric valve for adjusting flow of an ammonia injection branch pipe, comprising: the valve body, the valve core, the optical axis, the sealing guide ring and the driving assembly are also adjusted; one end of the regulating valve pipe body extends into the ammonia spraying main pipe and is connected with the ammonia spraying branch pipe in a sealing way, and the other end of the regulating valve pipe body is positioned outside the ammonia spraying main pipe; the regulating valve pipe body is provided with four ventilation windows which are positioned in the ammonia spraying main pipe and distributed at equal angles around the axial direction of the regulating valve pipe body; the optical axis is arranged in the regulating valve tube body; one end of the optical axis is connected with the valve core, the valve core is of a parabolic revolving body structure, and the other end of the optical axis is connected with the driving assembly; the sealing guide ring is sleeved outside the optical axis and is arranged at the joint of the optical axis and the regulating valve pipe body in a sealing manner; the driving assembly is used for driving the valve core to move along the axial direction of the regulating valve pipe body so as to change the opening degree of the window.

The invention is further provided with: the driving assembly comprises a lead screw, a driving motor for driving the lead screw to rotate and a guide pin for limiting the optical axis to rotate; the optical axis is coaxially connected with the lead screw, the guide pin is fixedly arranged in the regulating valve tube body, and the driving motor is configured as a through stepping motor.

The invention is further provided with: the adjustable valve is characterized in that a support rail is arranged in the adjusting valve pipe body, the guide pin is fixedly connected with the support rail, and the support rail is fixed through a bolt penetrating through the adjusting valve pipe body.

The invention is further provided with: the sealing guide ring is fixed through a bolt penetrating through the regulating valve pipe body.

The invention is further configured as follows: and sealing rings for sealing are arranged on the inner wall and the outer wall of the sealing guide ring.

The invention is further provided with: the optical axis is connected with the valve core through threads.

In conclusion, the beneficial technical effects of the invention are as follows:

the valve core with the parabolic section is adjusted more linearly, so that less turbulent flow is caused, and obvious negative pressure cannot be caused locally, so that the adjustment precision can be improved.

Drawings

Fig. 1 shows a schematic sectional structure diagram of an ammonia injection branch pipe flow regulating electric valve of the invention.

Fig. 2 shows a schematic of the structure at the valve cartridge of the present invention.

Reference numerals: 1. an ammonia spraying header pipe; 2. an ammonia injection branch pipe; 3. a regulating valve body; 31. a ventilation window; 4. a valve core; 51. a drive motor; 52. a supporting seat; 61. an optical axis; 62. a lead screw; 71. a support rail; 72. and a guide pin.

Detailed Description

First, it should be understood by those skilled in the art that the embodiments described herein are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.

Referring to fig. 1 and fig. 2, the invention provides a flow regulating electric valve for an ammonia injection branch pipe 2, which comprises a regulating valve pipe body 3, a valve core 4, an optical axis 61, a sealing guide ring and a driving assembly.

One end of the regulating valve pipe body 3 extends into the ammonia spraying main pipe 1 and is connected with the ammonia spraying branch pipe 2 in a sealing way, and the other end of the regulating valve pipe body 3 is positioned outside the ammonia spraying main pipe 1. An ammonia spraying main pipe 1 and an ammonia spraying branch pipe 2 which are connected. The ammonia gas flows into different ammonia injection branch pipes 2 from the ammonia injection main pipe 1. The joint of the regulating valve pipe body 3 and the ammonia spraying main pipe 1 is welded.

The regulating valve body 3 is provided with a ventilation window 31, and the ventilation window 31 is positioned in the ammonia spraying main pipe 1. The ammonia gas flowing in the ammonia injection manifold 1 enters the ammonia injection branch pipe 2 through the vent window 31. The ventilation windows 31 are provided in four and equally angularly distributed around the axial direction of the regulator valve body 3.

The optical axis 61 is disposed in the regulating valve body 3, and the optical axis 61 is disposed parallel to the regulating valve body 3. One end of the optical axis 61 is connected with the valve core 4 through threads, and the other end of the optical axis 61 is connected with the driving assembly. The valve core 4 is in a parabolic rotary body structure. The driving assembly is used for driving the valve core 4 to move along the axial direction of the adjusting valve tube body 3 through the optical axis 61 so as to change the opening degree of the window.

The sealing guide ring is sleeved outside the optical axis 61, and the inner wall of the sealing guide ring is attached to the optical axis 61. The seal guide ring is fixed to the regulating valve body 3 by bolts penetrating through the regulating valve body 3. The joint of the sealing guide ring, the optical axis 61 and the regulating valve pipe body 3 is arranged in a sealing mode, and the specific structure is that annular grooves are formed in the inner wall and the outer wall of the sealing guide ring and sealing rings are arranged in the annular grooves.

The driving assembly includes a lead screw 62, a driving motor 51 for driving the lead screw 62 to rotate, and a guide pin 72 for restricting the optical axis 61 from rotating. The drive motor 51 is specifically configured as a through-type stepping motor. The driving motor 51 is arranged outside the regulating valve pipe body 3, a supporting seat 52 is welded and fixed at one end of the regulating valve pipe body 3, which deviates from the ammonia spraying branch pipe 2, and the driving motor 51 is fixedly connected with the supporting seat 52 through a flange. A lead screw 62 driven to rotate by the drive motor 51 penetrates the support base 52 and is connected to the optical axis 61 by welding coaxially. The guide pin 72 is fixedly arranged in the regulating valve pipe body 3, the specific structure is that a support rail 71 is arranged in the regulating valve pipe body 3, the support rail 71 is fixed through a bolt penetrating through the regulating valve pipe body 3, and the guide pin 72 is connected with the support rail 71 in a welding mode. The specific matching structure of the guide pin 72 and the optical axis 61 belongs to the prior art, that is, a section of guide groove is formed on the optical axis 61, so the detailed structure is not described herein again.

When the driving motor 51 drives the screw 62 to rotate, the valve core 4 will move along the axial direction of the regulating valve body 3, so as to change the opening of the ventilation window 31, and further control the gas flow of the ammonia spraying branch pipe 2. However, compared with the prior art, the adjustment of the valve core 4 with the parabolic cross section is more linear, the turbulence is less, and obvious negative pressure cannot be caused locally, so that the adjustment precision can also be improved.

It should be noted that, based on the concept and innovation of the present invention, the flow-regulating electric valve of the ammonia injection branch pipe 2 of the present invention can also be applied to other fields and apparatuses for controlling the flow of different fluids. The name "ammonia injection manifold" is only used as a starting point for embodying the improvement of the invention and is not intended to be limiting.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ammonia injection branch pipe flow regulating electric valve is characterized by comprising: the adjusting valve comprises an adjusting valve body, a valve core, an optical axis, a sealing guide ring and a driving assembly;

one end of the regulating valve pipe body extends into the ammonia spraying main pipe and is connected with the ammonia spraying branch pipe in a sealing way, and the other end of the regulating valve pipe body is positioned outside the ammonia spraying main pipe;

the regulating valve body is provided with four ventilation windows which are positioned in the ammonia spraying main pipe and distributed around the axial direction of the regulating valve body at equal angles;

the optical axis is arranged in the regulating valve tube body; one end of the optical axis is connected with the valve core, the valve core is of a parabolic revolving body structure, and the other end of the optical axis is connected with the driving assembly;

the sealing guide ring is sleeved outside the optical axis and is arranged at the joint of the optical axis and the regulating valve in a sealing manner;

the driving assembly is used for driving the valve core to move along the axial direction of the regulating valve pipe body so as to change the opening degree of the window.

2. The ammonia injection branch pipe flow adjusting electric valve of claim 1, wherein: the driving assembly comprises a lead screw, a driving motor for driving the lead screw to rotate and a guide pin for limiting the optical axis to rotate; the optical axis is coaxially connected with the lead screw, the guide pin is fixedly arranged in the regulating valve tube body, and the driving motor is configured as a through type stepping motor.

3. The ammonia injection branch pipe flow adjusting electric valve of claim 2, wherein: the adjustable valve is characterized in that a support rail is arranged in the adjusting valve pipe body, the guide pin is fixedly connected with the support rail, and the support rail is fixed through a bolt penetrating through the adjusting valve pipe body.

4. The ammonia injection branch pipe flow adjusting electric valve of claim 1, wherein: the sealing guide ring is fixed through a bolt penetrating through the regulating valve pipe body.

5. The ammonia injection branch pipe flow adjusting electric valve of claim 4, wherein: and sealing rings for sealing are arranged on the inner wall and the outer wall of the sealing guide ring.

6. The ammonia injection branch pipe flow adjusting electric valve of claim 1, wherein: the optical axis is connected with the valve core through threads.