WO2017092049A1

WO2017092049A1 - Isodiametric constant-pressure pipe and injection type burning device

Info

Publication number: WO2017092049A1
Application number: PCT/CN2015/096479
Authority: WO
Inventors: 胡秀文; 李旭涛; 刘稼瑾
Original assignee: 深圳智慧能源技术有限公司
Priority date: 2015-12-04
Filing date: 2015-12-04
Publication date: 2017-06-08

Abstract

Disclosed are an isodiametric constant-pressure pipe (10) and an injection type burning device. The isodiametric constant-pressure pipe (10) comprises a first distribution pipe (12) with a uniform internal diameter and a first internal core (14) in the rear section of the first distribution pipe (12). A flow passage (16) is formed between the first internal core (14) and the inner wall of the first distribution pipe (12), and the external diameter of the first internal core (14) is enlarged gradually along a fluid direction. The injection type burning device comprises a gas inlet pipe (20), a second distribution pipe (22) which is in communication with the gas inlet pipe (20), and a plurality of Venturi burners (24) which are arranged on the second distribution pipe (22) and distributed at intervals. The second distribution pipe (22) is an isodiametric pipe, a second internal core (26) is provided in the rear section of the second distribution pipe (22), and a flow passage (28) is formed between the second internal core (26) and the inner wall of the second distribution pipe (22).

Description

Equal-diameter constant pressure tube and ejector type combustion device

Technical field

The invention relates to a gas pipeline, in particular to an equal-diameter constant-pressure pipe and an ejector-type combustion device having a constant-diameter constant-pressure pipe.

Background technique

In the petrochemical plant, the venting flare system can process the excess, harmful and unbalanced exhaust gas discharged from the production device in time, and can handle the test vehicle, the unqualified gas generated during the parking, and the large amount of gas instantaneously released during the accident to ensure the device. Normal and safe operation. Torch combustion is to maintain the stability of the flame, and the pressure of the gas in the gas pipeline that supplies fuel for the flare combustion is particularly important.

After the gas enters the pipeline, it flows in the pipeline. The torch burning on the pipeline continuously consumes gas, and the pressure of the gas in the pipeline is continuously reduced. Therefore, the gas with a pressure difference cannot maintain the stability of the flame combustion. Some people use a gas pipe with a gradually decreasing diameter to ensure a constant gas pressure. However, the manufacture and processing of such a gas pipeline is complicated, and the installation of the burner on the gas pipeline is also time-consuming and laborious due to the different diameters of the pipeline, and the cost is high, which is difficult to be popularized and applied.

technical problem

In view of this, the present invention proposes an equal-diameter constant pressure pipe.

The invention also proposes an ejector combustion apparatus having an equal diameter constant pressure tube.

Technical solution

An ejector-type combustion device includes an intake pipe, a distribution pipe communicating with the intake pipe, and a plurality of venturi burners disposed on the distribution pipe, the distribution pipe being an equal-diameter pipe, and further comprising Forming a flow path between the inner core and the inner wall of the distribution pipe, and an outer diameter of the at least one inner core gradually increasing along a fluid direction to reduce the flow path The cross-sectional area.

In an embodiment, the dispensing tube is a straight tube.

In an embodiment, the inner core is an inner core of equal diameter.

In an embodiment, the inner core is a multi-section inner core, and the diameter of each section is gradually increased in the fluid direction to gradually reduce the cross section of the flow passage.

In an embodiment, the dispensing tube is annular.

In one embodiment, the inner core is an inner core having an equal diameter, the inner core is curved, and the inner core of the one equal diameter is symmetrically disposed in the annular distribution tube with respect to a diameter. The diameter passes through the inlet of the dispensing tube.

In one embodiment, the inner core is a multi-section inner core having an arc shape, and the multi-section inner core is gradually increased in a fluid direction to make the flow path horizontal. The section is gradually reduced.

The present invention also provides an equal-diameter constant pressure tube comprising a distribution tube having a uniform inner diameter, the rear portion of the distribution tube accommodating at least one inner core, each of the inner cores being of equal diameter, the at least Forming a flow path for fluid flow between a core and the inner wall of the distribution tube, the outer diameter of the at least one inner core gradually increasing in a fluid direction to reduce the fluid in the longitudinal direction of the distribution tube Pressure changes.

In an embodiment, the dispensing tube is a straight tube.

In one embodiment, the distribution tube is an annular tube, the inner core is curved, the at least one inner core is symmetrically disposed within the annular tube with respect to a diameter, and the diameter passes through the distribution tube Entrance.

Beneficial effect

In summary, the present invention provides an equal-diameter constant pressure tube and an ejector combustion apparatus. Providing at least one inner core in the equal-diameter pipe, each of the inner cores being of equal diameter, the at least one inner core and the inner wall of the pipe forming a flow path for fluid flow, the at least one inner core The outer diameter of the outer diameter gradually increases in the direction of the fluid to reduce the pressure change of the fluid in the longitudinal direction of the pipe, thereby ensuring the stability of flame combustion in all venturi burners. The equal-diameter constant pressure tube provided by the invention has the advantages of simple structure, easy installation and processing, low cost and easy popularization and application.

DRAWINGS

Figure 1 is a schematic cross-sectional view showing the distribution pipe as a straight pipe.

2 is a perspective view of an ejector combustion apparatus in which the distribution pipe is a ring pipe.

Figure 3 is a schematic cross-sectional view of the distribution tube of Figure 2.

Embodiments of the invention

Before the embodiments are described in detail, it is understood that the invention is not limited to the details The invention may be embodied in other ways. Also, it will be understood that the phraseology and terminology used herein are for the purpose of description The words "including", "comprising", "having", and <RTIgt; </ RTI> <RTIgt; </ RTI> used herein are meant to include the items listed thereafter, their equivalents, and other additional items. In particular, when describing "a certain element", the invention does not limit the number of the elements to one, and may include a plurality.

1 is a schematic cross-sectional view showing a distribution pipe as a straight pipe. As shown in FIG. 1, the present invention provides an equal-diameter constant pressure pipe 10 comprising a distribution pipe 12 having a uniform inner diameter, and the distribution pipe 12 is provided with an inner core 14, A flow path 16 for fluid flow is formed between the inner core 14 and the inner wall of the distribution tube 12. In the fluid direction, the inner core 14 is disposed in the rear section of the distribution tube. In the specification and claims, "rear section" means a portion that is away from the inlet of the dispensing tube in the direction of the fluid.

In this embodiment, the inner core 14 has a cylindrical shape. The inner core 14 can include one or more segments, wherein each of the cores is of equal diameter and the outer diameter of the core of each segment is different. Specifically, the outer diameter of the at least one inner core 14 is gradually increased in the direction of fluid flow to gradually reduce the cross-sectional area of the flow passage 16 to thereby reduce the pressure change of the fluid in the longitudinal direction of the distribution pipe 12. purpose.

It should be noted that in other embodiments, the inner core 14 may be other shapes, such as square, as long as the pressure change of the fluid in the length direction of the dispensing tube 12 can be reduced.

In the present embodiment, the dispensing tube 12 is a straight tube, the inner core 14 includes three sections, the outer diameter of the three inner cores gradually increases in the direction of fluid flow, and the inner core 14 is fixedly mounted in the dispensing tube 12, for example, in the dispensing tube 12. A bracket is provided on the inner wall to fix the inner core 14.

2 is a perspective view of a ejector-type combustion apparatus in which the distribution pipe is a ring pipe, and FIG. 3 is a schematic cross-sectional view of the distribution pipe of FIG. As shown in FIG. 2 and FIG. 3, the present invention provides an ejector type combustion apparatus comprising an intake pipe 20, a distribution pipe 22 communicating with the intake pipe 20, and a plurality of venturi burners disposed at intervals on the distribution pipe 22. And an inner core 26 disposed in the distribution tube 22. In Figure 2, for the sake of clarity of illustration, only the nozzles 24 of each venturi burner are shown. A flow passage 28 is formed between the inner core 26 and the inner wall of the distribution tube 22, the distribution tube 22 provides fluid fuel to a plurality of venturi burners 24, and a plurality of venturi burners 24 are used to combust the fluid fuel provided by the intake manifold 20.

In this embodiment, the inner core 26 has a cylindrical shape. Likewise, the inner core 26 can include one or more sections, each section being of equal diameter, and the outer diameter of the core of each section being different. Specifically, the outer diameter of the at least one inner core 26 is gradually increased in the fluid flow direction to reduce the cross-sectional area of the flow passage 28, and the cross-sectional area of the flow passage 28 is decreased so that the pressure of the fluid is increased, at a certain To the extent that the pressure of the fluid is reduced due to continuous consumption, the stability of the fluid pressure is ensured.

It should be noted that in other embodiments, the inner core 26 may be other shapes, such as square, as long as the pressure change of the fluid in the length direction of the dispensing tube 22 can be reduced.

The distribution pipe 22 is an annular pipe, and the inner core 26 is disposed at the rear portion of the annular pipe, that is, a section away from the junction of the distribution pipe 22 and the intake pipe 20. In the present embodiment, the fluid pressure in the distribution pipe 22 is short due to the short length of the distribution pipe 22. The change is relatively small, so that the inner core 26 is only provided with one section and the inner core 26 is curved to accommodate the annular tube. The fluid enters the distribution pipe 22 through the intake pipe 20 and simultaneously flows from both ends of the annular pipe. Therefore, the inner core 26 is symmetrically fixedly mounted in the dispensing tube 22, for example, a bracket is provided on the inner wall of the dispensing tube 22 to fix the inner core 26.

It should be noted that when the length of the dispensing tube is long, the inner core can be arranged in multiple sections (not shown). The multi-section inner core is curved, and the outer diameter of the multi-section inner core is gradually increased along the fluid flow direction, thereby reducing the pressure difference of the fluid in the distribution pipe, thereby maintaining the stability of the venturi burner flame combustion. And the multi-section inner core is symmetrically distributed symmetrically about the axial direction of the intake pipe.

The concepts described herein may be embodied in other forms without departing from the spirit and scope. The specific embodiments disclosed are to be considered as illustrative and not restrictive. Therefore, the scope of the invention is to be determined by the appended claims Any changes which come within the meaning and range of the claims are intended to be within the scope of the claims.

Claims

An ejector-type combustion device includes an intake pipe, a distribution pipe communicating with the intake pipe, and a plurality of venturi burners disposed on the distribution pipe, the distribution pipe being a constant diameter pipe, characterized in that And an inner core disposed at a rear portion of the distribution pipe, and a flow passage is formed between the inner core and an inner wall of the distribution pipe.
The ejector combustion apparatus according to claim 1, wherein said distribution pipe is a straight pipe.
The ejector-type combustion apparatus according to claim 2, wherein said inner core is an inner core of one equal diameter.
The ejector type combustion apparatus according to claim 2, wherein the inner core is a multi-section inner core, and the diameter of the inner core of the latter section is larger in the fluid direction of the adjacent two inner cores. The diameter of the core in the previous section.
The ejector combustion apparatus according to claim 1, wherein said distribution pipe is annular.
The ejector type combustion apparatus according to claim 5, wherein said inner core is an inner core of equal diameter, said inner core is curved, and said inner core of said one equal diameter is opposite to one Diameters are symmetrically disposed within the annular distribution tube, the diameter passing through the inlet of the dispensing tube.
The ejector type combustion apparatus according to claim 5, wherein said inner core is a multi-section inner core, said inner core is curved, and said multi-section equal-diameter inner core is in a fluid direction Gradually increasing to gradually reduce the cross section of the flow path.
An equal-diameter constant pressure pipe comprising a distribution pipe having a uniform inner diameter, wherein a rear section of the distribution pipe houses at least one inner core, and each inner core is of equal diameter, the at least Forming a flow path for fluid flow between a core and the inner wall of the distribution tube, the outer diameter of the at least one inner core gradually increasing in a fluid direction to reduce the fluid in the longitudinal direction of the distribution tube Pressure changes.
The constant diameter constant pressure pipe according to claim 8, wherein said distribution pipe is a straight pipe.
The equal-diameter constant pressure pipe according to claim 8, wherein said distribution pipe is an annular pipe, said inner core is curved, and said at least one inner core is symmetrically disposed on said diameter with respect to a diameter Within the annular tube, the diameter passes through the inlet of the dispensing tube.