CN210814760U

CN210814760U - Fluid mixing equipment

Info

Publication number: CN210814760U
Application number: CN201921318314.0U
Authority: CN
Inventors: 邱玉琳; 姜万军; 祁鲁海
Original assignee: Sinopec Engineering Group Co Ltd; Sinopec Guangzhou Engineering Co Ltd
Current assignee: Sinopec Engineering Group Co Ltd; Sinopec Guangzhou Engineering Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-06-23
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses a fluid mixing equipment. The fluid mixing equipment is provided with a main pipe (7), a branch pipe (9), an injection pipe (5), a flange (2) and a pore plate (1). The two ends of the main pipe are respectively provided with a main pipe inlet (12) and a main pipe outlet (13), the two ends of the flange are respectively connected with the pore plate and the branch pipe, and the injection pipe penetrates through the inner cavities of the flange and the branch pipe. A sleeve (6) is arranged in the inner cavity of the main pipe along the axial direction of the main pipe, and an outlet (16) of the injection pipe is positioned in the inner cavity of the sleeve. The sleeve inlet (14) is adjacent to the main tube inlet, the sleeve outlet (15) is adjacent to the main tube outlet, and the injection tube outlet is directed towards the sleeve outlet and the main tube outlet. Be equipped with guide block (8) between being responsible for the inner wall and the sleeve pipe outer wall, the sleeve pipe is connected with being responsible for through detachable component. The injection pipe and the pore plate are an integral forging, and a positioning pin (3) is arranged between the flange and the pore plate. The utility model discloses can be used to the great cold fluid of temperature difference in devices such as petrochemical and the mixture of hot-fluid.

Description

Fluid mixing equipment

Technical Field

The utility model relates to a fluid mixing equipment that petrochemical device used.

Background

In petrochemical plants, there are many conditions that require mixing of two fluids (cold and hot) having a large temperature difference during transport. The working condition can cause metal elements at the mixing part to generate large alternating stress, and fatigue failure is easy to occur. The current common fluid mixing equipment is provided with a main pipe with a larger caliber and a branch pipe with a smaller caliber, wherein the main pipe and the branch pipe are single-layer metal pipes. The injection pipe passes through the inner cavity of the branch pipe, and the outlet of the injection pipe is positioned in the inner cavity of the main pipe. The main pipe of the fluid mixing equipment is easy to crack within the designed service life under the coupling of the working conditions of violent temperature alternation and the working conditions of internal pressure, corrosion and the like of the pipeline; in severe cases, process fluid leaks, and serious accidents such as fire and explosion occur.

Disclosure of Invention

The utility model aims at providing a fluid mixing equipment to solve the problem that the person in charge that exists when being used for the great cold flow body of difference in temperature and hot-fluid mixture of current fluid mixing equipment produces crack, emergence accident easily.

In order to solve the above problem, the utility model adopts the following technical scheme: the utility model provides a fluid mixing equipment, is equipped with and is responsible for, branch pipe, filling tube, flange and orifice plate, and the both ends of being responsible for are the entry of being responsible for respectively and are responsible for the export, and the both ends of flange link to each other with orifice plate and branch pipe respectively, and the filling tube entry links to each other with the orifice plate, and the filling tube passes its characterized in that from the inner chamber of flange and branch pipe: be equipped with the sleeve pipe along the axial of being responsible for in the inner chamber of being responsible for, the filling tube export is arranged in sheathed tube inner chamber, and the sleeve pipe entry is close to the person in charge entry, and the sleeve pipe export is close to the person in charge export, and the filling tube export is equipped with the guide block towards sleeve pipe export and person in charge export between being responsible for the inner wall and the sleeve pipe outer wall, and the sleeve pipe is connected with being responsible for through detachable component, and the filling tube is whole forging with the orifice plate, is equipped with the.

Adopt the utility model discloses, following beneficial effect has: (1) the utility model discloses regard as the main mixed place of cold fluid and hot-fluid with the sleeve pipe inner chamber. The sleeve bears the violent temperature alternation of cold fluid and hot fluid, and although cracks can be generated, the main pipe can be prevented from generating cracks, and fluid leakage and accidents are avoided. When the sleeve cracks and expands to a certain degree, the new sleeve can be replaced. (2) The injection pipe and the pore plate are an integral forging, and the strength and the reliability are higher. (3) And a positioning pin is arranged between the flange and the pore plate. Therefore, when the orifice plate and the injection pipe are installed, the direction of the outlet of the injection pipe can be ensured, and the wrong installation can be prevented.

The utility model discloses can be used to the great cold fluid of temperature difference in devices such as petrochemical and the mixture of hot-fluid, safe and reliable, easy operation maintenance.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The drawings and detailed description do not limit the scope of the invention as claimed.

Drawings

Fig. 1 is a schematic structural diagram of a fluid mixing apparatus according to the present invention.

Fig. 2 is a sectional view a-a in fig. 1.

In fig. 1 and 2, the same reference numerals denote the same technical features.

Detailed Description

Referring to fig. 1 and 2, a fluid mixing apparatus of the present invention is provided with a main pipe 7, a branch pipe 9, an injection pipe 5, a flange 2, and an orifice plate 1. The two ends of the main pipe 7 are respectively a main pipe inlet 12 and a main pipe outlet 13 which are connected with the process pipeline in a welding way. Two ends of the flange 2 are respectively connected with the pore plate 1 and the branch pipe 9, are connected with the pore plate 1 through bolts and are connected with the branch pipe 9 through welding. The inlet of the injection pipe 5 is connected with the orifice plate 1, and the injection pipe 5 passes through the inner cavities of the flange 2 and the branch pipe 9. A sealing gasket 4 is arranged between the flange 2 and the pore plate 1. A sleeve 6 is arranged in the inner cavity of the main pipe 7 along the axial direction of the main pipe 7, the injection pipe 5 penetrates through an opening on the pipe wall of the sleeve 6, and an injection pipe outlet 16 is positioned in the inner cavity of the sleeve 6. The sleeve inlet 14 is adjacent the main tube inlet 12 and the sleeve outlet 15 is adjacent the main tube outlet 13. A guide block 8 is arranged between the inner wall of the main pipe 7 and the outer wall of the sleeve 6, and the sleeve 6 is connected with the main pipe 7 through a detachable component. Referring to fig. 1, the components include a bolt 11 and a positioning block 10 welded to the inner wall of the main pipe 7; the bolt 11 passes through the opening on the pipe wall of the sleeve 6 and is inserted into the screw hole on the positioning block 10, and the sleeve 6 is fixed after being screwed tightly.

The inlet of the injection pipe 5 can be connected with the orifice plate 1 in a welding way. The utility model discloses an optimal scheme is, and injection pipe 5 and orifice plate 1 are whole forging.

The inlet pipe outlet 16 may be provided at the bottom of the inlet pipe 5 (as shown in fig. 1) or may be provided at the side of the inlet pipe 5 (not shown, in this case, the bottom of the inlet pipe 5 is closed). The outlet 16 of the injection pipe faces the outlet 15 of the sleeve pipe and the outlet 13 of the main pipe, and a positioning pin 3 is arranged between the flange 2 and the orifice plate 1.

The guide block 8 plays a role in guiding and supporting the sleeve 6. As shown in fig. 1 and 2, the guide blocks 8 are steel plates fixed to the inner wall of the

main pipe

7, and 3 to 8 (4 in the figure) blocks are provided at both ends of the sleeve 6. The guide block 8 is welded to the inner wall of the main tube 7.

The wall thickness of the sleeve 6 is generally 5 to 6 mm. The portion of the outer wall of the sleeve 6 in contact with the guide block 8 may be provided with a stellite alloy layer by bead welding to improve wear resistance and thus increase service life.

The cross sections of the main pipe 7, the branch pipe 9, the injection pipe 5 and the sleeve 6 are all circular, and the sizes are determined after calculation according to specific working conditions. The main pipe 7 is arranged generally coaxially with the sleeve 6 and the branch pipe 9 is arranged generally coaxially with the injection pipe 5.

The materials of the components of the utility model can be carbon steel, stainless steel, alloy steel, etc.

The utility model discloses when using, the cold fluid gets into sleeve 6's inner chamber through injection pipe 5, and the hot-fluid gets into sleeve 6's inner chamber through being responsible for entry 12 and sleeve pipe entry 14. Alternatively, hot fluid enters the lumen of the cannula 6 via the injection tube 5 and cold fluid enters the lumen of the cannula 6 via the main tube inlet 12 and the cannula inlet 14. The cold fluid can be, for example, hydrogen, diesel oil, wax oil, etc., the hot fluid can be, for example, crude oil, hydrogenation reaction effluent, etc., and the temperature difference between the cold fluid and the hot fluid is generally 130 ℃ or more. The cold fluid and the hot fluid are mixed in the inner cavity of the sleeve 6 and then flow out of the sleeve outlet 15 and the main pipe outlet 13. The sleeve 6 is subjected to severe temperature alternation of cold fluid and hot fluid, when cracks are generated and extend to a certain degree, the welding seams between the main pipe inlet 12 and the main pipe outlet 13 and the process pipeline can be cut off, the orifice plate 1, the injection pipe 5 and the bolt 11 are disassembled, the sleeve 6 is taken out, and then a new sleeve is replaced.

A portion of cold or hot fluid can enter between the main pipe 7 and the sleeve 6, and between the branch pipe 9 and the injection pipe 5 from the main pipe inlet 12. Since the fluid is a single temperature fluid, there is no temperature alternation, and therefore, cracks are not easily generated in the main pipe 7, the branch pipes 9, and the injection pipe 5. The fluid finally flows out from the main pipe outlet 13.

Cold fluid and hot fluid in the inner cavity of the sleeve 6 can enter between the main pipe 7 and the sleeve 6 and between the branch pipe 9 and the injection pipe 5 from a gap between the injection pipe 5 and an opening on the pipe wall of the sleeve 6. However, since the flow rates of the cold fluid and the hot fluid are small, cracks are not easily generated in the main pipe 7, the branch pipes 9, and the injection pipe 5. The fluid finally flows out from the main pipe outlet 13.

Claims

1. The utility model provides a fluid mixing equipment, be equipped with and be responsible for (7), branch pipe (9), filling tube (5), flange (2) and orifice plate (1), the both ends of being responsible for (7) are responsible for respectively and are managed entry (12) and be responsible for export (13), the both ends of flange (2) link to each other with orifice plate (1) and branch pipe (9) respectively, filling tube (5) entry links to each other with orifice plate (1), the inner chamber of flange (2) and branch pipe (9) is followed in filling tube (5) and is passed, its characterized in that: be equipped with sleeve pipe (6) along the axial of being responsible for (7) in the inner chamber of being responsible for (7), the filling tube export (16) are located the inner chamber of sleeve pipe (6), sleeve pipe entry (14) are close to and are responsible for entry (12), sleeve pipe export (15) are close to and are responsible for export (13), filling tube export (16) are towards sleeve pipe export (15) and are responsible for export (13), be equipped with guide block (8) between being responsible for (7) inner wall and sleeve pipe (6) outer wall, sleeve pipe (6) are connected with being responsible for (7) through detachable component, filling tube (5) are whole forging with orifice plate (1), be equipped with locating pin (3) between flange (2) and orifice plate (1).

2. The fluid mixing apparatus of claim 1, wherein: the guide blocks (8) are steel plates fixed on the inner wall of the main pipe (7), and 3-8 blocks are respectively arranged at two ends of the sleeve (6).

3. The fluid mixing apparatus according to claim 1 or 2, wherein: the part of the outer wall of the sleeve (6) which is contacted with the guide block (8) is welded with a stellerite alloy layer.