CN213688033U - Impingement baffle structure of reboiler tube box - Google Patents
Impingement baffle structure of reboiler tube box Download PDFInfo
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- CN213688033U CN213688033U CN202022498225.8U CN202022498225U CN213688033U CN 213688033 U CN213688033 U CN 213688033U CN 202022498225 U CN202022498225 U CN 202022498225U CN 213688033 U CN213688033 U CN 213688033U
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- reboiler
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Abstract
The utility model discloses a dash board structure of reboiler pipe case, including outer scour protection flat board, outer scour protection taper plate and interior scour protection board. The outer impingement plate sieve pore structure and the inner impingement plate inverted arch structure; the flash evaporation device is mainly applied to the working condition that fluid at the axial inlet of a reboiler pipe box in a caprolactam device in the chemical industry has flash evaporation. Compared with the baffle plate of the traditional reboiler pipe box, the special structure of the novel baffle plate can effectively reduce the impact of flash evaporation on the pipe box and the erosion of the welding line of the end of the heat exchange pipe, thereby reducing the vibration of the reboiler and protecting the safety of the baffle plate and the reboiler structural member.
Description
Technical Field
The utility model relates to a scour protection plate structure of chemical industry reboiler pipe case, in particular to scour protection plate structure of reboiler pipe case in caprolactam device.
Background
GB/T151-2014 Heat exchanger's regulation to heat exchanger tube case scour protection: when liquid ρ v2>9000kg/(m·s2) (p-Density, kg/m)3(ii) a v-flow velocity, m/s), the tube box with axial inlet connection tube is preferably provided with an anti-impact structure. The purpose is to reduce the scouring of the high-speed fluid to the welding seam of the pipe end of the heat exchange pipe and to make the fluid enter the pipe pass uniformly. The design is generally that a single-layer flat plate is arranged at a certain distance from the pipe orifice according to the standard regulation to prevent the impact. For fluid with flash evaporation working conditions at an inlet, an inlet medium is suddenly changed into a gas-liquid mixed phase from a liquid phase, kinetic energy generated by rapid expansion of a gas phase violently impacts a tube box, and the great energy easily causes a series of problems of falling of a common impingement plate, leakage of a welding seam of a heat exchange tube, severe vibration of the heat exchanger, unstable work of the heat exchanger and the like. Ordinary impingement baffle can not satisfy the requirement of heat exchanger safe operation yet, urgently needs a novel impingement structure that can reduce entry flash distillation operating mode and strike, reduce the heat exchanger vibration.
Disclosure of Invention
An object of the utility model is to provide a dash board structure to pipe box impact and vibration when effectively reducing the flash distillation of entry medium is used for replacing traditional dash board.
The technical scheme of the utility model is that: a novel anti-impact plate structure of a reboiler pipe box comprises an outer anti-impact flat plate 1, an outer anti-impact conical plate 2 and an inner anti-impact plate 3. The impingement baffle is formed by the combination of an inner impingement baffle and an outer impingement baffle, and the outer impingement baffle is composed of an outer impingement flat plate 1 and an outer impingement conical plate 2. The inner impingement plate plays a first impingement role, and the outer impingement plate plays a second impingement role after impact energy is weakened.
Because the energy of the first impact of the inlet fluid flash evaporation is larger, the inner impingement plate 3 is made into an inverted arch structure relative to the direction of the fluid, so that the rigidity of the impingement plate structure can be increased, and the contact area between the fluid and the impingement plate can be enlarged; the number of integrally punched connecting plates is not less than 6, and the number of the connecting plates is increased to increase the welding length of the impingement baffle and the shell; the distance of the inner impingement plate 3 from the orifice when the space allows is such that the flow area is larger than the inlet pipe cross-sectional area to reduce the inlet flow rate.
The outer anti-impact plate bears secondary impact of fluid, sieve holes are uniformly distributed on the outer anti-impact flat plate 1 and the outer anti-impact conical plate 2, and the total area of the sieve holes is larger than the sectional area of the inlet pipe; the outer impingement baffle assembly is equivalent to a mesh enclosure to buffer the secondary impact of the fluid and enable the fluid to uniformly flow to the heat exchanger tube box. The bottom of the outer anti-impact cone plate 2 is provided with a proper number of tear holes to facilitate the drainage of liquid.
All panel thickness should be not less than 6mm, adopt the full penetration by welding structure of grooving between impingement baffle self and impingement baffle and the casing, abandon traditional fillet weld structure to make impingement baffle self and more firm with the welding between the casing.
The utility model discloses an actively the effect: the special structural design of novel impingement baffle can effectively reduce the violent impact to the pipe case when entry fluid flash distillation, reduces the vibration of heat exchanger, prevents that the impingement baffle from droing, reduces heat exchanger noise of operation.
Drawings
Fig. 1 is a schematic view of a baffle structure of a reboiler tube box.
Figure 2 is a top view of the inner impingement plate.
Figure 3 is a top view of the outer impingement plate.
In the figure: 1-outer impingement plate; 2-outer anti-impact conical plate; 3-inner impingement baffle.
Detailed Description
The following embodiments are merely illustrative of the present invention, and do not constitute limitations of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
The impingement plate structure of the reboiler tube box shown in fig. 1 comprises an outer impingement plate 1, an outer impingement cone plate 2 and an inner impingement plate 3. The impingement baffle is formed by the combination of an inner impingement baffle and an outer impingement baffle, and the outer impingement baffle is composed of an outer impingement flat plate 1 and an outer impingement conical plate 2.
After the reboiler pipe box is manufactured, firstly stamping the inner impingement baffle 3 into an inverted arch shape, and after the distance between the impingement baffle and a pipe opening is determined, welding a groove formed in a connecting plate and a shell thoroughly and firmly; the outer anti-impact flat plate 1 and the outer anti-impact conical plate 2 are provided with punching quantity and size according to the requirement of the flow area, the outer anti-impact conical plate 2 is rolled into a cone and then welded with the outer anti-impact flat plate 1 into an assembly, and finally the outer anti-impact assembly and the shell are completely welded and welded firmly, and tear holes with proper quantity are arranged at the bottom of the cone. Fluid of the inlet pipe under the flash evaporation working condition evenly enters the heat exchanger pipe box after impacting the inner impingement plate and the outer impingement plate in sequence.
Claims (5)
1. The utility model provides a impingement plate structure of reboiler pipe case, includes outer impingement plate (1), outer impingement plate (2) and interior impingement plate (3), its characterized in that: the impingement plate is formed by combining an inner impingement plate and an outer impingement plate, the inner impingement plate is integrally stamped, and the outer impingement plate is composed of an outer impingement flat plate (1) and an outer impingement conical plate (2).
2. A impingement plate structure of a reboiler tube box according to claim 1, wherein: interior impingement baffle (3) is anti-arch structure for the fluid direction relatively, and the projection direction is circular, and impingement baffle circumference equipartition sets up and is no less than 6 connecting plates, the integrative punching press of connecting plate and arch plate, connecting plate and 45 contained angles of equipment axis.
3. A impingement plate structure of a reboiler tube box according to claim 1, wherein: sieve holes are uniformly distributed on the outer anti-impact flat plate (1) and the outer anti-impact conical plate (2), and the total area of the sieve holes is larger than the sectional area of the inlet pipe; the outer anti-impact flat plate (1) is circular, the outer anti-impact conical plate (2) is conical with a cone angle of 45 degrees, and a proper number of tear holes are arranged at the bottom of the cone.
4. A impingement plate structure of a reboiler tube box according to claim 1, wherein: the outer impingement baffle conical plate (2), the inner impingement baffle (3) and the equipment shell are completely welded through; the outer anti-impact flat plate (1) and the outer anti-impact conical plate (2) are completely welded through.
5. A impingement plate structure of a reboiler tube box according to claim 1, wherein: the thickness of all the plates is not less than 6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022498225.8U CN213688033U (en) | 2020-11-02 | 2020-11-02 | Impingement baffle structure of reboiler tube box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022498225.8U CN213688033U (en) | 2020-11-02 | 2020-11-02 | Impingement baffle structure of reboiler tube box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213688033U true CN213688033U (en) | 2021-07-13 |
Family
ID=76727051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022498225.8U Active CN213688033U (en) | 2020-11-02 | 2020-11-02 | Impingement baffle structure of reboiler tube box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213688033U (en) |
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2020
- 2020-11-02 CN CN202022498225.8U patent/CN213688033U/en active Active
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