Short-process efficient vacuum U-shaped condenser

Abstract

The utility model provides a short-process efficient vacuum U-shaped condenser which comprises a condenser shell and a water inlet pipe box, an air inlet is formed in the upper end of the condenser shell, an air outlet is formed in the rear end of the condenser shell, a U-shaped tube bundle is arranged in the condenser shell, and a rectangular baffle plate is obliquely inserted into the inner end of the U-shaped tube bundle; a sealing gasket assembly is arranged between the rectangular baffle plate and the condenser shell, multiple sets of condensation cavities are formed in the outer end of the U-shaped tube bundle, gas baffles are arranged on the sides of the multiple sets of condensation cavities, and exhaust cavities are formed in the lower ends of the gas baffles. A plurality of groups of supporting plates I, a plurality of groups of supporting plates II or a plurality of groups of supporting plates III are respectively arranged at two ends of two adjacent groups of condensing cavities, air blocking strips are arranged at the outer ends of the supporting plates I, the supporting plates II and the supporting plates III, and air blocking pipes are arranged at the upper ends of the supporting plates III. The problems of low conversion efficiency and serious material waste in the design of vapor-liquid condensation of the vacuum-pumping system are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vapor-liquid condensation in a vacuum system, in particular to a short-process high-efficiency vacuum U-shaped condenser. Background Art

[0002] Shell and tube condensers are currently used in vacuum systems, especially in the vacuum systems of petroleum refineries. Many process media are not clean fluids and easily form coking on the surface of the heat exchange tubes in the condenser, requiring core extraction and cleaning of the tube bundle. For shell and tube condensers with core extraction requirements, floating head condensers or U-tube condensers are generally used. Traditional floating head condensers and U-tube condensers mostly use bow-shaped baffles, and some also use X-shaped floating head condensers. However, in terms of condensation efficiency, bow-shaped baffles have the disadvantages of low heat exchange area utilization, low heat exchange efficiency due to gas downstream flow, and large gas pressure loss. Floating head condensers also have the disadvantages of material waste, high cost, and heavy equipment load.

[0003] In the prior art, during the use of vapor-liquid condensation in a vacuum system:

[0004] (1) When more than 50% of the bow-shaped baffles are in the downstream direction, the condensation effect is poor;

[0005] (2) There is gas retention in the bow-shaped baffles, and the heat exchange area is ineffective;

[0006] (3) The long airflow path of the bow-shaped baffle leads to large air pressure loss;

[0007] (4) Material waste, high investment cost, and high equipment quality;

[0008] (5) The heat exchange in the subcooling zone is poor and the condensate temperature is too high;

[0009] Therefore, we made improvements to this and proposed a short-process, high-efficiency vacuum U-shaped condenser. Utility Model Content

[0010] The purpose of the utility model is to address the problems of low conversion efficiency and serious material waste in the current design of vapor-liquid condensation in vacuum systems.

[0011] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0012] A short-flow high-efficiency vacuum U-shaped condenser is provided to improve the above problems.

[0013] The specific application is as follows:

[0014] The condenser tube of claim 1 is a high efficiency vacuum U-type condenser having a U-shaped structure and a plurality of condenser tubes connected to the condenser tube. The condenser tube of claim 1 is a high efficiency vacuum U-type condenser having a U-shaped structure and a plurality of condenser tubes connected to the condenser tube. The condenser tube of claim 1 is a high efficiency vacuum U-type condenser having a U-shaped structure and a plurality of condenser tubes connected to the condenser tube. The condenser tube of claim 1 is a high efficiency vacuum U-type condenser having a U-shaped structure and a plurality of condenser tubes connected to the condenser tube.

[0015] As the preferred technical solution of this application, the rectangular baffle is inserted into the center of the U-shaped tube bundle at an angle of 45°, the rectangular baffle is sealed to the inner wall of the condenser shell, the non-metallic gasket is sealed between the rectangular baffle and the condenser shell, and the condensate outlet is located below several condensation cavities.

[0016] As a preferred technical solution of the present application, the air blocking tube is fixed to the upper end of the support plate three, and a cavity is provided between the air blocking tube and the air inlet.

[0017] As a preferred technical solution of the present application, the U-shaped tube bundle and the support plate 1, support plate 2 and support plate 3 are respectively sealed with air baffle strips.

[0018] As a preferred technical solution of the present application, the left end of the U-shaped tube bundle is connected to a U-shaped elbow.

[0019] As a preferred technical solution of the present application, a notch is embedded in the exhaust port side of the support plate 2 and the support plate 3.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the scheme of this application:

[0022] 1. The rectangular baffle is inserted into the center of the U-shaped tube bundle at a 45° angle. The baffle is sealed against the inner wall of the condenser shell, separating the air inlet and outlet of the condenser shell, changing the air flow path and reducing resistance.

[0023] 2. The rectangular baffle is equipped with a sealing gasket assembly to increase the sealing effect and prevent heat exchange short circuit;

[0024] 3. An exhaust cavity without heat exchange tubes is provided on the air outlet side of the condenser shell to ensure smooth exhaust and reduce resistance;

[0025] 4. Multiple support plates divide the condenser shell into multiple condensing cavities. An air baffle is installed above the support plate at the air inlet to protect the heat exchange tubes from being washed by the air flow and to distribute the gas.

[0026] 5. Air baffles are arranged around the tube bundle to ensure that the airflow always flows within the tube bundle;

[0027] 6. A hand hole is set on the water inlet side of the water inlet box to facilitate observation of pipe blockage;

[0028] 7. An air baffle is installed at the bottom to prevent hot air flow from contacting the condensate and prevent the condensate temperature from being too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a front view of the overall interior of a short-flow high-efficiency vacuum U-shaped condenser provided in this application;

[0030] Figure 2 This is a left-side front view of a support plate of a short-flow high-efficiency vacuum U-shaped condenser provided by this application;

[0031] Figure 3 A right view of a support plate 1 of a short-flow high-efficiency vacuum U-shaped condenser provided in this application;

[0032] Figure 4 A right view of the second support plate of a short-flow high-efficiency vacuum U-shaped condenser provided in this application;

[0033] Figure 5 This is a right view of the support plate three of a short-flow high-efficiency vacuum U-shaped condenser provided in this application.

[0034] Indicated in the figure:

[0035] 1. Condenser shell; 2. Rectangular baffle; 3. U-shaped tube bundle; 4. Air inlet; 5. Air outlet; 6. Non-metallic gasket; 7. Exhaust chamber; 81. Support plate 1; 82. Support plate 2; 83. Support plate 3; 9. Condensation chamber; 10. Air baffle; 11. Air baffle strip; 12. U-shaped bend; 13. Hand hole; 14. Notch; 15. Air baffle; 16. Cooling water outlet; 17. Cooling water inlet; 18. Condensate outlet; 19. Water inlet pipe box. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0037] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other unless there is a conflict.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0039] like Figure 1-Figure 5 As shown, this embodiment proposes a short-flow high-efficiency vacuum U-shaped condenser, including a condenser shell 1 and a water inlet pipe box 19. The upper end of the condenser shell 1 is provided with an air inlet 4, and the rear end of the condenser shell 1 is provided with an air outlet 5. A U-shaped tube bundle 3 is provided in the condenser shell 1, and a rectangular baffle 2 is obliquely inserted into the inner end of the U-shaped tube bundle 3. A sealing gasket assembly 6 is provided between the rectangular baffle 2 and the condenser shell 1. The outer end of the U-shaped tube bundle 3 is provided with multiple groups of condensation cavities 9, and the lower ends of the multiple groups of condensation cavities 9 are provided with air baffles 15. The lower ends of the air baffles 15 are provided with exhaust cavities 7, and the adjacent two groups of exhaust cavities are provided with air baffles 15. Several groups of support plates 1 81, several groups of support plates 2 82 or several groups of support plates 3 83 are respectively provided at both ends of the cavity 7. The outer ends of support plates 1 81, 2 82 and 3 83 are provided with air baffles 11, the upper end of support plate 3 83 is provided with an air baffle pipe 10, the left ends of support plates 2 82 and 3 83 are provided with notches 14, the lower ends of multiple groups of condensation cavities 9 are provided with condensate outlets 18, the upper end of the water inlet pipe box 19 is provided with a cooling water outlet 16, the lower end of the water inlet pipe box 19 is provided with a cooling water inlet 17, and the right end of the water inlet pipe box 19 is provided with a hand hole 13.

[0040] The rectangular baffle 2 is tilted 45 degrees and inserted into the center of the U-shaped tube bundle 3. The rectangular baffle 2 is sealed with the inner wall of the condenser shell 1. The sealing gasket assembly 6 is sealed between the rectangular baffle 2 and the condenser shell 1. The exhaust chamber 7 is connected with the condensate outlet 18.

[0041] The air blocking tube 10 is fixed to the upper end of the support plate 3 83 , and a cavity is provided between the air blocking tube 10 and the air inlet 4 . The U-shaped tube bundle 3 and the support plate 1 81 , the support plate 2 82 and the support plate 3 83 are sealed with the air blocking strip 11 respectively. The left end of the U-shaped tube bundle 3 is connected to the U-shaped bend 12 , and the exhaust port side of the support plate 2 82 and the support plate 3 83 is embedded with a notch 14 .

[0042] The rectangular baffle 2 is inserted into the center of the U-shaped tube bundle 3 at a 45° angle. The rectangular baffle 2 is sealed against the inner wall of the condenser shell 1, separating the air inlet 4 from the air outlet 5 of the condenser shell 1, changing the air flow path and reducing resistance.

[0043] The rectangular baffle 2 is provided with a sealing gasket assembly 6 to increase the sealing effect and prevent heat exchange short circuit;

[0044] An exhaust cavity 7 without heat exchange tubes is provided on the side of the air outlet 5 of the condenser shell 1 to ensure smooth exhaust and reduce resistance;

[0045] Several groups of support plates 1 81, 2 82 and 3 83 divide the condenser shell into multiple condensing chambers 9. An air blocking pipe 10 is installed above the support plate 3 83 at the air inlet 4 to protect the heat exchange tubes from being washed by the air flow and to distribute the gas.

[0046] Air retaining strips 11 are arranged around the U-shaped tube bundle 3 to ensure that the airflow always flows within the U-shaped tube bundle 3;

[0047] A hand hole 13 is provided on the water inlet side of the water inlet pipe box 19 to facilitate observation of pipe blockage.

[0048] An air baffle 15 is provided at the bottom to prevent the hot air flow from contacting the condensate and to prevent the condensate temperature from being too high.

[0049] When the present invention is in use, the air inlet 4 is arranged at the top, the air outlet 5 is arranged at the side, the traditional bow-shaped baffle is eliminated, and a rectangular baffle 2 axially crossing the condenser shell 1 is adopted to make the air flow direction perpendicular to the heat exchange tube, and the gas flows vertically downward from the top of the heat exchange tube, thinning the condensate water film on the heat exchange tube, thereby improving the heat exchange effect; the air flow goes to the vertical heat exchange tube, goes around the rectangular baffle 2 once and is discharged from the side, the air flow path is greatly shortened, and the pressure loss is reduced; a plurality of groups of support plates 1 81, support plates 2 82 and support plates 3 83 are adopted to divide the condenser shell 1 into It is divided into several condensation areas, and a gas distributor is installed below the air inlet 4 to evenly distribute the gas to each condensation cavity 9, greatly reducing the air stagnation area, making effective use of the heat exchange area and improving the condensation efficiency; an air baffle 11 is set around the condenser shell 1 to make the air flow toward the heat exchange tube area, thereby improving the condensation efficiency; a U-shaped condenser is used instead of a floating head condenser, saving materials, reducing investment, and also reducing equipment quality; an air baffle 15 is set in the bottom supercooling area to prevent the hot gas from directly contacting the condensate, so as to ensure that the condensate temperature is controlled at around 40°C.

[0050] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A short-flow high-efficiency vacuum U-shaped condenser, comprising a condenser shell (1) and a water inlet pipe box (19), characterized in that: The upper end of the condenser shell (1) is provided with an air inlet (4), the rear end of the condenser shell (1) is provided with an air outlet (5), a U-shaped tube bundle (3) is provided in the condenser shell (1), a rectangular baffle (2) is obliquely inserted into the inner end of the U-shaped tube bundle (3), a sealing gasket assembly (6) is provided between the rectangular baffle (2) and the condenser shell (1), the outer end of the U-shaped tube bundle (3) is provided with multiple groups of condensation cavities (9), the lower ends of the multiple groups of condensation cavities (9) are provided with air baffles (15), the lower ends of the air baffles (15) are provided with exhaust cavities (7), and the two ends of the adjacent two groups of exhaust cavities (7) are respectively provided with multiple groups of support plates (8 1) Several groups of support plates 2 (82) or several groups of support plates 3 (83), the outer ends of the support plates 1 (81), 2 (82) and 3 (83) are provided with air-blocking strips (11), the upper end of the support plate 3 (83) is provided with an air-blocking pipe (10), the left ends of the support plates 2 (82) and 3 (83) are provided with a notch (14), the lower end of the exhaust cavity (7) is provided with a condensate outlet (18), the upper end of the water inlet pipe box (19) is provided with a cooling water outlet (16), the lower end of the water inlet pipe box (19) is provided with a cooling water inlet (17), and the right end of the water inlet pipe box (19) is provided with a hand hole (13).

2. A short-flow high-efficiency vacuum U-shaped condenser according to claim 1, characterized in that: The rectangular baffle (2) is inserted into the center of the U-shaped tube bundle (3) at an angle of 45 degrees, the rectangular baffle (2) is sealed with the inner wall of the condenser shell (1), the sealing gasket assembly (6) is sealed between the rectangular baffle (2) and the condenser shell (1), and the condensate outlet (18) is located below the multiple groups of condensation cavities (9).

3. A short-flow high-efficiency vacuum U-shaped condenser according to claim 2, characterized in that: The air blocking tube (10) is fixed to the upper end of the supporting plate (83), and a cavity is provided between the air blocking tube (10) and the air inlet (4).

4. A short-flow high-efficiency vacuum U-shaped condenser according to claim 3, characterized in that: The U-shaped tube bundle (3) is sealedly connected to the air baffle strip (11) with the support plate 1 (81), the support plate 2 (82) and the support plate 3 (83).

5. A short-flow high-efficiency vacuum U-shaped condenser according to claim 4, characterized in that: The left end of the U-shaped tube bundle (3) is connected to a U-shaped bent tube (12).

6. A short-flow high-efficiency vacuum U-shaped condenser according to claim 5, characterized in that: The exhaust port sides of the second support plate (82) and the third support plate (83) are embedded with a notch (14).

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