Double detachable critical flow velocity nozzle

Abstract

The utility model discloses a double detachable critical flow velocity nozzle, which comprises an inner cylinder arranged in a cylinder section, and is characterized in that a flange cover is welded on the inner cylinder, a flange is arranged at one end of the cylinder section, a baffle ring is arranged at the other end of the cylinder section, the flange cover is fixedly connected with the flange through a hexagon-headed bolt matched with a nut and a gasket, and the baffle ring is connected with the flange through a nut. A wear-resistant lining and a first fixing ring are arranged on the inner wall of the inner cylinder, a wear-resistant ceramic nozzle is arranged on the inner side of the first fixing ring, and the wear-resistant ceramic nozzle is fixedly connected with the first fixing ring through a second fixing ring and a refractory fiber pad in cooperation with bolts and nuts. The utility model has the beneficial effects that the inner cylinder is connected and fixed through the matching bolt of the flange and the flange cover, the disassembly and replacement are convenient and fast, the nozzle adopts the wear-resistant ceramic nozzle, the wear resistance of the nozzle is improved, and the nozzle is connected and fixed through the bolt and the fixing ring, and is convenient to disassemble, assemble and replace.

Description

Technical Field

[0001] This utility model relates to the field of nozzle technology, and in particular to a dual detachable critical flow velocity nozzle. Background Technology

[0002] A critical velocity nozzle is a special type of throttling device. It is a precisely designed nozzle that, under specific upstream pressure and temperature conditions, allows the fluid velocity at the nozzle throat to reach the local speed of sound. At this point, the flow rate reaches its maximum and no longer increases with decreasing downstream pressure, indicating a critical flow state. In chemical, petroleum, and other industrial processes, critical velocity nozzles are an excellent choice for applications requiring precise control of gas flow rates.

[0003] However, in the process of implementing the utility model technical solution in the embodiments of this application, the applicant discovered that the above-mentioned technology has at least the following technical problems:

[0004] Under operating conditions, the critical flow velocity nozzle approaches the speed of sound, which can damage the cylinder section and lining, leading to leaks. Replacement is necessary after the inner cylinder and nozzle wear or are damaged. Traditional critical flow velocity nozzles are cumbersome to disassemble and replace. A new type of double-detachable critical flow velocity nozzle is now available, facilitating disassembly and maintenance and increasing its durability. Utility Model Content

[0005] This application provides a dual detachable critical flow velocity nozzle. The inner cylinder is fixed by bolts connecting the flange and flange cover, making disassembly and replacement convenient and quick. The nozzle is made of wear-resistant ceramic, which not only improves the wear resistance of the nozzle, but also connects and fixes the nozzle by bolts and fixing rings, making disassembly and replacement convenient. The wear-resistant lining is made of corundum casting, which can effectively improve the service strength of the wear-resistant lining and provide good protection for the inner cylinder.

[0006] This application provides a dual detachable critical flow velocity nozzle, comprising: an inner cylinder disposed within a cylindrical section; a flange cover welded to the inner cylinder; a flange at one end of the cylindrical section and a retaining ring at the other end; the flange cover being connected and fixed to the flange by hexagonal head bolts, nuts, and gaskets; a wear-resistant lining and a first fixing ring disposed on the inner wall of the inner cylinder; a wear-resistant ceramic nozzle disposed on the inner side of the first fixing ring; the wear-resistant ceramic nozzle being connected and fixed to the first fixing ring by a second fixing ring and a refractory fiber gasket, bolts, and nuts; one end of the wear-resistant lining being tightly attached to the wear-resistant ceramic nozzle, and the other end being provided with a transition cone.

[0007] The wear-resistant lining is made of corundum castable and is connected and fixed to the inner cylinder by casting. The transition cone and the wear-resistant lining are integrally formed, and the transition cone is inclined inward at 45°.

[0008] One end of the inner cylinder is flush with the outer surface of the retaining ring, and the retaining ring is connected and fixed by welding.

[0009] The first fixing ring is connected and fixed to the inner cylinder by welding, and the first fixing ring and the inner cylinder are perpendicular to each other.

[0010] The number of refractory fiber pads is two, which are respectively set between the second fixing ring and the wear-resistant ceramic nozzle and between the first fixing ring and the wear-resistant ceramic nozzle.

[0011] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0012] The inner cylinder is fixed by bolts connecting the flange and flange cover, making disassembly and replacement convenient and quick. The nozzle is made of wear-resistant ceramic, which not only improves the wear resistance of the nozzle, but also connects and fixes the nozzle with bolts and retaining rings, making disassembly and replacement easy. The wear-resistant lining is made of corundum casting, which can effectively improve the strength of the wear-resistant lining and provide good protection for the inner cylinder. The transition cone on the wear-resistant lining can effectively reduce resistance and improve the service life of the wear-resistant lining. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the specific structure of the present utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle. Detailed Implementation

[0015] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods. Example

[0016] A dual detachable critical flow velocity nozzle includes: an inner cylinder 1, which is disposed inside a cylindrical section 2. A flange cover 101 is welded to the inner cylinder 1. A flange 201 is provided at one end of the cylindrical section 2, and a retaining ring 7 is provided at the other end. The flange cover 101 is connected and fixed to the flange 201 by hexagonal head bolts, nuts, and washers. The inner wall of the inner cylinder 1 is provided with a wear-resistant lining 3 and a first fixing ring 6. A wear-resistant ceramic nozzle 8 is provided on the inner side of the first fixing ring 6. The wear-resistant ceramic nozzle 8 is connected and fixed to the first fixing ring 6 by a second fixing ring 4 and a refractory fiber pad 5, along with bolts and nuts. One end of the wear-resistant lining 3 is tightly attached to the wear-resistant ceramic nozzle 8, and the other end is provided with a transition cone 301.

[0017] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0018] The inner cylinder 1 is fixed by the flange 201 and the flange cover 101 with matching bolts, which makes disassembly and replacement convenient and quick; the nozzle is a wear-resistant ceramic nozzle 8, which not only improves the wear resistance of the nozzle, but also the nozzle is fixed by bolts and fixing rings, which makes disassembly and replacement convenient; one end of the wear-resistant lining 3 is tightly attached to the wear-resistant ceramic nozzle 8, which can limit the wear-resistant ceramic nozzle 8 and improve the stability of the wear-resistant ceramic nozzle 8 in use. Example

[0019] A dual detachable critical flow velocity nozzle is disclosed. The wear-resistant lining 3 is made of corundum castable and is connected and fixed to the inner cylinder 1 by casting. The transition cone 301 and the wear-resistant lining 3 are integrally formed, and the transition cone 301 is inclined inward at 45°. One end of the inner cylinder 1 is flush with the outer surface of the retaining ring 7, and the retaining ring 7 is connected and fixed by welding. The first fixing ring 6 is connected and fixed to the inner cylinder 1 by welding, and the first fixing ring 6 and the inner cylinder 1 are perpendicular to each other. There are two refractory fiber pads 5, which are respectively set between the second fixing ring 4 and the wear-resistant ceramic nozzle 8 and between the first fixing ring 6 and the wear-resistant ceramic nozzle 8.

[0020] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0021] The wear-resistant lining 3 is made of corundum casting, which can effectively improve the service strength of the wear-resistant lining 3 and provide good protection for the inner cylinder 1. The transition cone 301 on the wear-resistant lining 3 can effectively reduce resistance and improve the service life of the wear-resistant lining 3.

[0022] Replacing the traditional gasket with a refractory fiber gasket 5 can effectively improve the service life of the gasket and ensure the stability of the wear-resistant ceramic nozzle 8.

[0023] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A dual detachable critical flow rate nozzle, comprising: An inner cylinder, wherein the inner cylinder is disposed within a cylindrical section, is characterized in that a flange cover is welded onto the inner cylinder, a flange is provided at one end of the cylindrical section, and a retaining ring is provided at the other end, the flange cover is connected and fixed to the flange by hexagonal head bolts, nuts, and gaskets, the inner wall of the inner cylinder is provided with a wear-resistant lining and a first fixing ring, a wear-resistant ceramic nozzle is provided on the inner side of the first fixing ring, the wear-resistant ceramic nozzle is connected and fixed to the first fixing ring by a second fixing ring and a refractory fiber gasket, bolts, and nuts, one end of the wear-resistant lining is tightly attached to the wear-resistant ceramic nozzle, and the other end is provided with a transition cone.

2. The dual detachable critical flow velocity nozzle as described in claim 1, characterized in that, The wear-resistant lining is made of corundum castable and is connected and fixed to the inner cylinder by casting. The transition cone and the wear-resistant lining are integrally formed, and the transition cone is inclined inward at 45°.

3. The dual detachable critical flow velocity nozzle as described in claim 1, characterized in that, One end of the inner cylinder is flush with the outer surface of the retaining ring, and the retaining ring is connected and fixed by welding.

4. The dual detachable critical flow velocity nozzle as described in claim 1, characterized in that, The first fixing ring is connected and fixed to the inner cylinder by welding, and the first fixing ring and the inner cylinder are perpendicular to each other.

5. A dual detachable critical flow velocity nozzle as described in claim 1, characterized in that, The number of refractory fiber pads is two, which are respectively set between the second fixing ring and the wear-resistant ceramic nozzle and between the first fixing ring and the wear-resistant ceramic nozzle.

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