CN113883751A

CN113883751A - Efficient and convenient absorber

Info

Publication number: CN113883751A
Application number: CN202111196960.6A
Authority: CN
Inventors: 熊鑫; 祝令辉; 曾坤
Original assignee: Pupan Energy Technology Research Institute Beijing Co ltd
Current assignee: Anhui Pupan Energy Technology Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-01-04
Anticipated expiration: 2041-10-14
Also published as: CN113883751B

Abstract

The invention relates to a high-efficiency convenient absorber, which belongs to the technical field of low-grade waste heat refrigeration and comprises a fixed pipe box and a shell, wherein a circulating water inlet and a circulating water outlet are formed in the pipe box, a lean solution inlet and a rich solution outlet are formed in the shell, a side U-shaped pipe bundle is arranged in the shell, a linear arrangement of baffle plates for fixing the pipe bundle is arranged in the shell, a slide rail is arranged at the bottom end of the shell, the bottom end of each baffle plate slides on the slide rail, an upper layer of spraying device and a lower layer of spraying device are arranged in the shell, a first layer of spraying device is positioned at the top end in the shell, a nozzle of a second layer of spraying device is positioned on the baffle plate, and a second layer of spraying device is positioned in a U-shaped groove of the side U-shaped pipe bundle. Compared with the absorber structure in the prior art, the invention can reasonably utilize the baffle plate to increase the middle layer spraying system to be used in the absorber on the premise of ensuring the heat exchange area in the prior absorber to be consistent, thereby improving the absorption efficiency and the mass and heat transfer efficiency, and improving the absorption efficiency from 40 percent to 65 to 75 percent.

Description

Efficient and convenient absorber

Technical Field

The invention belongs to the technical field of low-grade waste heat refrigeration, and particularly relates to a high-efficiency convenient absorber.

Background

Along with social development, the improvement of the energy utilization rate is continuously paid attention to by each country, wherein an absorption system in low-grade waste heat recovery and utilization is gradually known and vigorously developed, so that the energy utilization rate is improved, and the environmental pollution pressure is reduced. The more critical part of the whole set of absorption system is the absorber, which determines the absorption efficiency and the mass and heat transfer efficiency of the whole set of absorption system.

In the prior art, the absorber structure adopts the mode of changing the shape of a heat exchange plate, adopting a mechanical mixing mode or using a surfactant and the like; in the aspect of a pipe distribution mode, a U-shaped pipe shell horizontal absorber is mostly adopted, and a spray pipe structure is arranged on the upper layer in the absorber to improve the mass and heat transfer efficiency of the absorber, however, in the structure, the lower layer absorption efficiency of the U-shaped pipe is still lower no matter a common ammonia water absorption system or a single-effect lithium bromide absorption system, and the problem is serious; and the tube plate of the U-shaped tubular absorber generally adopts the tube plate type which can be clamped and can be conveniently disassembled when the shell pass needs to be cleaned or overhauled, but under the condition that the shell pass does not need to be cleaned, for example, only the tube pass needs to be cleaned or the welding joint of the heat exchange tube and the tube plate leaks, the tube plate can not be fixed with the shell pass flange after the tube pass flange is disassembled by adopting the clamped tube plate, and great inconvenience is brought to the subsequent leakage inspection work. Therefore, a high-efficiency convenient absorber is provided to solve the problems.

Disclosure of Invention

The invention aims to solve the problems and provide a high-efficiency convenient absorber which is simple in structure and reasonable in design.

The invention realizes the purpose through the following technical scheme:

the utility model provides a high-efficient convenient absorber, includes fixed pipe case and casing, be equipped with the circulating water on the pipe case and import and export, be equipped with barren solution import, rich liquid export on the casing, be equipped with side U type tube bank in the casing, the tip of U type tube bank is fixed on the pipe case, be equipped with linear arrangement's baffling board that is used for fixed tube bank in the casing, the bottom of casing is equipped with the slide rail, the bottom of baffling board slides on the slide rail, two-layer spray set about being equipped with in the casing, first layer spray set is located the inside top of casing, and the intercommunication barren solution import, and is located the top of U type tube bank, and second layer spray set's spout is located the baffling board, and second layer spray set is located the U type inslot of side U type tube bank.

As a further optimization scheme of the invention, the upper half part of the baffle plate is of a hollow structure, the lower half part of the baffle plate is of a solid structure, spray nozzles are arranged on two sides of the bottom end of the upper half part of the baffle plate, and the upper half part of the baffle plate and the spray nozzles form a second layer of spraying device.

As a further optimization scheme of the invention, a metal hard pipe is movably connected to a spraying pipeline of the first layer of spraying device through a metal hose, the metal hard pipe is positioned at the upper end of the baffle plate, and the metal hard pipe is communicated with the hollow structure of the upper half part of each group of baffle plates.

As a further optimization scheme of the invention, the metal hose is movably connected with the metal hard pipe through a threaded connector, and a hand hole for hand connection is arranged on the shell and is positioned right above the threaded connector.

As a further optimization scheme of the invention, two groups of refrigerant inlet pipes are arranged at the positions, close to the lower end, of two sides of the shell, gas distribution pipes which are linearly arranged are arranged between each group of refrigerant inlet pipes and the shell, and each gas distribution pipe is uniformly distributed in the middle of each adjacent baffle plate at the lower side in the shell.

As a further preferred embodiment of the present invention, the tube-side flange of the tube box and the tube plate are connected to the shell-side flange of the shell by bolts, the tube plate separates the tube box and the shell, and the ends of the U-shaped tube bundle are fixed to the tube plate.

As a further optimization scheme of the invention, two groups of slide rails are arranged and are respectively positioned at the left side and the right side below the inner wall of the shell, and supporting guide rails are welded between the slide rails and the shell.

The invention has the following beneficial effects:

the efficient and convenient absorber provided by the invention can reasonably utilize the baffle plate to increase the middle layer spraying system to be used in the absorber on the premise of ensuring the heat exchange area in the existing absorber to be consistent, so that the absorption efficiency and the mass and heat transfer efficiency are improved, one layer of spraying is added while the U-shaped pipe is not reduced, the absorption efficiency is improved to 65-75% from the original 40%, and meanwhile, the defect that a clamping type pipe plate cannot be fixed after a pipe pass flange is removed is overcome under the condition of ensuring that the U-shaped pipe is convenient to detach and the main structure is not increased.

Drawings

FIG. 1 is a schematic front view of a high efficiency and convenient absorber of the present invention;

FIG. 2 is a schematic side view of the high efficiency and convenient absorber of the present invention;

fig. 3 is a cross-sectional view of a baffle of a high efficiency handy absorber of the invention.

In the figure: 1. a shell-side flange; 2. a tube side flange; 3. a tube sheet; 4. a U-shaped tube bundle; 5. a spray head; 6. a spray pipe; 7. a metal hose; 8. a threaded connector; 9. a baffle plate; 10. a slide rail; 11. a housing; 12. hand hole; 13. a barren liquor inlet; 14. a rich liquid outlet; 15. a refrigerant inlet pipe; 16. a circulating water inlet and outlet; 17. a metal hard tube; 18. supporting the guide rail; 19. a gas distributing pipe; 20. a tube box.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

As shown in fig. 1-3, the high-efficiency convenient absorber of this embodiment includes a fixed pipe box 20 and a casing 11, the pipe box 20 is provided with a circulating water inlet and outlet 16, the casing 11 is provided with a lean liquid inlet 13 and a rich liquid outlet 14, a side U-shaped pipe bundle 4 is provided in the casing 11, an end of the U-shaped pipe bundle 4 is fixed on the pipe box 20, a pipe side flange 2 of the pipe box 20 and a pipe plate 3 are connected with a casing side flange 1 of the casing 11 by bolts, an end of the U-shaped pipe bundle 4 is fixed on the pipe plate 3, a linear arrangement of baffle plates 9 for fixing the pipe bundle is provided in the casing 11, a bottom end of the casing 11 is provided with two sets of slide rails 11, a bottom end of the baffle plate 9 slides on the slide rails 11, the two sets of slide rails 11 are respectively located on left and right sides below an inner wall of the casing 11, a support guide rail 18 is welded between the slide rail 11 and the casing 11, an upper and a lower layer of spray devices are provided in the casing 11, a first layer of spray devices is located on an inner top end of the casing 11, and the lean solution inlet 13 is communicated with and positioned above the U-shaped pipe bundle 4, the nozzles of the second layer of spraying devices are positioned on the baffle plate 9, and the second layer of spraying devices are positioned in the U-shaped groove of the side U-shaped pipe bundle 4.

The upper half of baffling board 9 is hollow structure, and the latter half is solid structure, and baffling board 9 upper half bottom both sides all are equipped with shower nozzle 5, and baffling board 9 upper half forms second layer spray set with shower nozzle 5, is connected with metal hard pipe 17 through metal collapsible tube 7 on first layer spray set's the spray pipeline 6, and metal hard pipe 17 is located the upper end of baffling board 9, and on the metal hard pipe 17 with every baffling board 9 upper half hollow structure intercommunication.

Casing 11 both sides are close to lower extreme position department and are equipped with two sets of refrigerant inlet tubes 15, and be equipped with linear arrangement's gas-distributing pipe 19 on every group refrigerant inlet tube 15 and between casing 11, every gas-distributing pipe 19 equipartition sets up in the middle of every adjacent baffling board 9 of downside in casing 11, this structure has realized that 4 regional many places of U type tube bank admit air in casing 11, combine the second floor spray set, gas has been aggravated, the degree of liquid contact surface turbulence, gas has greatly been promoted, liquid level contact absorbs, still be equipped with the pressure measurement mouth on casing 11, the temperature measurement mouth, the safety valve port, the replacement mouth, drain and clean mouth of row.

The metal hose 7 is movably connected with the metal hard pipe 17 through a threaded connector 8, a hand hole 12 for hand hole is arranged on the shell 11, and the hand hole 12 is located right above the threaded connector 8.

Two layers of spraying devices are arranged in the shell 11, the first layer of spraying device is arranged at the upper part of the upper-layer tube bundle, atomized poor solution is sprayed on the outer wall of the upper-layer tube bundle, and a film is formed and flows down gradually. Because of the upper tube bundle row number is less, the liquid that flows down gradually can realize the equipartition distribution of tub outer wall liquid film down, and in the same way, the equipartition distribution of tub outer wall liquid film of pipe of lower floor can be realized to second floor spray set, and liquid under the upper tube bundle simultaneously can drench to the tub outer wall of pipe of lower floor once more, has realized the renewal once more of liquid film. The structure of the improved absorber is combined, the uniform distribution of the liquid film on the outer wall of the tube bundle tube is realized by double-layer spraying, and the area of the liquid film is increased, so that the contact area of gas and liquid is increased, and the absorption efficiency is improved.

The lean solution flows into a spray pipeline 6 from a lean solution inlet pipe 13, a part of the lean solution is atomized and sprayed into an upper layer pipe bundle through a first layer of spray device on the spray pipeline, the other part of the lean solution flows into a spray head 5 welded on a baffle plate 9 through a hollow structure of the baffle plate 9 through a metal hose 7, the lean solution is sprayed out of the spray head 5, drips onto the surface of a U-shaped pipe bundle 4 and flows downstream to the bottom end of the absorber and flows out of the absorber through a rich solution outlet pipe 14; circulating water enters the U-shaped pipe bundle 4 from a circulating water inlet pipe 16 and is discharged from a circulating water outlet; the refrigerant enters from the refrigerant inlet pipe 15 and spreads to the whole absorber, and is supplied to the lean solution absorption on the surface of the U-shaped pipe bundle 4, meanwhile, the lean solution absorption process is accompanied with the heat release process, the released heat is taken away by the circulating water in the U-shaped pipe bundle 4, and the fluid flowing out from the rich solution outlet pipe 14 is the rich solution changed from the lean solution absorption refrigerant.

When the shell side of the absorber needs cleaning or overhaul, the metal hose 7 is separated from the metal hard tube 17 through the hand hole 12, then the hexagon head bolt connected with the tube plate 3 and the shell side flange 1 and the hexagon head bolt connected with the tube plate 3 and the tube side flange 2 are removed, and then the tube plate 3 is pulled to separate the U-shaped tube bundle from the shell side through the slide rail 10; but under the condition that the shell pass does not need to be cleaned or the overhaul only needs to line up the leakage of the joints of the tube and the tube plates 3, only the hexagon head bolts connected with the tube plate 3 and the tube pass flange 2 can be removed, so that the tube plate 2 and the shell pass flange 1 are still fixed by the hexagon head bolts connected with the tube plate 2 and the shell pass flange 1, the subsequent inspection work can be continuously carried out, and the method is very convenient.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The utility model provides a high-efficient convenient absorber, its characterized in that, includes fixed pipe case and casing, be equipped with the circulating water exit on the pipe case, be equipped with lean solution import, rich liquid export on the casing, be equipped with side U type tube bank in the casing, the tip of U type tube bank is fixed on the pipe case, be equipped with linear arrangement's baffling board that is used for fixed tube bank in the casing, the bottom of casing is equipped with the slide rail, the bottom of baffling board slides on the slide rail, two-layer spray set about being equipped with in the casing, first layer spray set is located the inside top of casing, and the intercommunication lean solution is imported, and is located the top of U type tube bank, and second layer spray set's spout is located the baffling board, and second layer spray set is located the U type inslot of side U type tube bank.

2. The efficient and convenient absorber as claimed in claim 1, wherein the upper half of the baffle plate is of a hollow structure, the lower half of the baffle plate is of a solid structure, spray nozzles are arranged on both sides of the bottom end of the upper half of the baffle plate, and the upper half of the baffle plate and the spray nozzles form a second layer of spraying device.

3. The efficient and convenient absorber as claimed in claim 2, wherein the spraying pipe of the first layer of spraying device is movably connected with a metal hard pipe through a metal hose, the metal hard pipe is positioned at the upper end of the baffle plate, and the metal hard pipe is communicated with the hollow structure of the upper half part of each group of baffle plates.

4. A high efficiency portable absorber according to claim 3 wherein said metal hose is movably connected to said metal pipe by a threaded connector, said housing having a hand hole for said metal hose, said hand hole being located directly above said threaded connector.

5. A high-efficiency convenient absorber according to claim 1, wherein two groups of refrigerant inlet pipes are arranged on two sides of the shell near the lower end, and a linear arrangement of gas distribution pipes is arranged between each group of refrigerant inlet pipes and the shell, and each gas distribution pipe is uniformly distributed in the middle of each adjacent baffle plate on the lower side in the shell.

6. A high efficiency, convenient and fast absorber according to claim 1, wherein the tube side flange of the tube box and the tube plate and the shell side flange of the shell are connected by bolts, the tube plate separates the tube box and the shell, and the ends of the U-shaped tube bundle are fixed on the tube plate.

7. The efficient and convenient absorber as claimed in claim 1, wherein there are two sets of slide rails, one set being located on each of the left and right sides below the inner wall of the housing, and support rails welded between the slide rails and the housing.