Anti-blocking heat exchanger

Abstract

The utility model discloses an anti-blocking heat exchanger which comprises a heat exchanger body, a blow-off pipeline system assembly and a control system. The heat transfer pipe is connected between the left water chamber assembly and the right water chamber assembly; expansion sections and contraction sections of the heat transfer pipes are alternately arranged in sequence; the design of the heat transfer pipe can remarkably reduce the possibility that dirt in fluid is deposited on the pipe wall. The water chamber partition plate adopts a special-shaped design, and dirt in the water chamber is guided to the lowest position. Dirt is discharged to an outlet pipeline of the heat exchanger by utilizing pressure difference, so that the blockage condition of the heat exchanger can be improved, the operation efficiency can be improved, the maintenance cost can be saved, the dirt and sediments can be received in a centralized area at the lowest point, and the sewage is convenient to discharge.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to an anti-blocking heat exchanger. Background Art

[0002] The main transport and use media in the petroleum field are crude oil and oily wastewater, which often have complex compositions. The media also contain a large amount of sulfates or carbonates including barium, strontium, magnesium, calcium, as well as paraffin, polymers and other substances. When these media are in heat exchange in the heat exchanger, they are easy to condense and adsorb on the surface of the pipe wall after contacting with the pipe wall. As time goes by, these substances continue to precipitate and adhere to the wall to form dirt. The longer the contact time, the easier it is to form dirt.

[0003] At present, conventional descaling methods include online cleaning, chemical dosing, manual mechanical descaling, etc., but they can never solve the problem of scaling and clogging of heat exchangers. This makes the equipment very prone to clogging failures during operation, with a high equipment operation failure rate, poor reliability, shortened maintenance cycles, high operation and maintenance costs, and poor economic efficiency. Therefore, it is necessary to propose an anti-blocking heat exchanger to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-blocking heat exchanger to address the deficiencies of the prior art, so as to solve the problem that the prior art cannot effectively solve the scaling and blockage of the heat exchanger.

[0005] The utility model provides an anti-blocking heat exchanger, comprising: a heat exchanger body, a sewage pipe system and a control system; the heat exchanger body comprises a shell, and the two ends of the shell are respectively provided with a left water chamber component and a right water chamber component; a heat transfer pipe is provided inside the shell, and the heat transfer pipe is connected between the left water chamber component and the right water chamber component; the heat transfer pipe adopts a telescopic pipe, and the expansion section and the contraction section of the heat transfer pipe are alternately arranged in sequence; a shell-side medium outlet is provided below one end of the shell, and a shell-side medium inlet is provided above the other end of the shell; the outer side of the left water chamber component is respectively connected with a tube-side medium inlet and a tube-side medium inlet at the top and bottom;

[0006] The sewage pipe system includes a sewage pipe, a manual ball valve and an electric ball valve; the sewage pipe includes a first pipe, a second pipe, a third pipe, a fourth pipe, a fifth pipe, a sixth pipe and a seventh pipe; the right water chamber assembly is connected to the second pipe through the first pipe and the third pipe respectively, and the second pipe is connected to the fourth pipe; the fourth pipe is connected to the pipe medium inlet and outlet through the seventh pipe; the fourth pipe is connected to the left water chamber assembly through the sixth pipe and the fifth pipe in sequence; the first pipe, the third pipe and the seventh pipe are all provided with a manual ball valve and an electric ball valve;

[0007] The control system includes a controller, a first input signal line, a second input signal line, a first output signal line, a second output signal line, a third output signal line, a pressure sensor and an outlet pressure sensor; an inlet pressure sensor is provided on the pipe-side medium inlet, and an outlet pressure sensor is provided on the pipe-side medium inlet and outlet; the inlet pressure sensor is connected to the controller through the first input signal line, the outlet pressure sensor is connected to the controller through the second input signal line, and the controller is connected to the manual ball valve and the electric ball valve on the first piping, the third piping and the seventh piping respectively through the first output signal line, the second output signal line and the third output signal line.

[0008] Furthermore, the left water chamber assembly is installed on the left tube plate by means of bolts and nuts, and a left water chamber gasket is arranged between the left water chamber assembly and the left tube plate.

[0009] Furthermore, the right water chamber assembly is installed on the right tube plate by means of bolts and nuts, and a right water chamber gasket is arranged between the right water chamber assembly and the right tube plate.

[0010] Furthermore, the left water chamber assembly includes a left water chamber shell, a first left water chamber partition, a second left water chamber partition and a left water chamber equipment flange; the first left water chamber partition and the second left water chamber partition are arranged in sequence from top to bottom in the left water chamber shell, and the left water chamber equipment flange is arranged at the end of the left water chamber shell; the first left water chamber partition is arranged horizontally, and the left side of the second left water chamber partition is inclined downward.

[0011] Furthermore, the right water chamber assembly includes a right water chamber shell, a right water chamber partition, and a right water chamber equipment flange; the right water chamber partition is arranged inside the right water chamber shell, and the right water chamber equipment flange is arranged at the end of the right water chamber shell; the left end of the right water chamber partition is located in the middle of the right water chamber shell, and the right end of the right water chamber partition is inclined downward.

[0012] The utility model has the following beneficial effects: the utility model provides an anti-blocking heat exchanger, which adopts a high flow rate design in the tube, has a high medium Reynolds number, and enhances turbulence. While enhancing the heat transfer effect, it reduces the contact time between the medium and the wall. The heat transfer tube adopts a telescopic tube, and the expansion section and the contraction section are arranged alternately in sequence. The strong vortex generated by the fluid in the expansion section can be fully utilized in the contraction section. At the same time, the boundary layer flow velocity of the contraction section can be effectively increased, thereby significantly reducing the possibility of dirt in the fluid being deposited on the tube wall. The water chamber partition adopts a special-shaped design to guide the dirt in the water chamber to the lowest point. At the lowest point of the partition and the lowest point of the water chamber, there is a sewage outlet, which is connected to the sewage pipe system. The pressure difference is used to discharge the dirt to the outlet pipe of the heat exchanger, which can improve the blockage of the heat exchanger, improve the operating efficiency, save maintenance costs, and collect dirt and sediments in a concentrated area at the lowest point for convenient sewage discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the structure of the anti-blocking heat exchanger of the utility model;

[0015] Figure 2 It is a schematic diagram of the left water chamber assembly of the anti-blocking heat exchanger of the utility model;

[0016] Figure 3 It is a schematic diagram of the right water chamber component of the anti-blocking heat exchanger of the utility model.

[0017] Illustration: 101-tube side medium inlet; 102-tube side medium inlet and outlet; 103-left water chamber assembly; 104-right water chamber assembly; 105-left tube sheet; 106-right tube sheet; 107-heat transfer tube; 108-shell side medium inlet; 109-shell side medium outlet; 110-shell; 111-left water chamber gasket; 112-right water chamber gasket; 113-inlet pressure sensor; 114-outlet pressure sensor; 115-bolt; 116-nut; 117-first piping; 118-second piping; 119-third piping; 120-fourth piping; 121- The fifth piping; 122-the sixth piping; 123-the seventh piping; 201-manual ball valve; 202-electric ball valve; 301-controller; 302-the first input signal line; 303-the second input signal line; 304-the first output signal line; 305-the second output signal line; 306-the third output signal line; 1031-the left water chamber shell; 1032-the first left water chamber partition plate; 1033-the second left water chamber partition plate; 1034-the left water chamber equipment flange; 1041-the right water chamber shell; 1042-the right water chamber partition plate; 1043-the right water chamber equipment flange. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those of ordinary skill in the art to which the present application belongs.

[0019] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0020] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for clarity, the thickness of the layers and regions is enlarged, and the same reference numerals are used to represent the same devices, so their description will be omitted.

[0021] See also Figures 1 to 3 The utility model embodiment provides an anti-blocking heat exchanger, including: a heat exchanger body, a sewage pipe system and a control system.

[0022] The heat exchanger body includes a shell 110 , and a left water chamber assembly 103 and a right water chamber assembly 104 are respectively disposed at two ends of the shell 110 .

[0023] Specifically, the left water chamber assembly 103 is mounted on the left tube sheet 105 by means of bolts 115 and nuts 116, and a left water chamber gasket 111 is disposed between the left water chamber assembly 103 and the left tube sheet 105. The right water chamber assembly 104 is mounted on the right tube sheet 106 by means of bolts 115 and nuts 116, and a right water chamber gasket 112 is disposed between the right water chamber assembly 104 and the right tube sheet 106.

[0024] The left water chamber assembly 103 and the right water chamber assembly 104 are fastened to the left tube sheet 105 and the right tube sheet 106 respectively by bolts 115 and nuts 116. This design makes the overall structure of the heat exchanger compact and stable. The connection method of bolts and nuts can ensure that there will be no loosening or leakage between the water chamber assembly and the tube sheet during the operation of the equipment, thereby ensuring the sealing and operating stability of the heat exchanger. The left water chamber gasket 111 and the right water chamber gasket 112 are respectively arranged between the left water chamber assembly 103 and the left tube sheet 105, and between the right water chamber assembly 104 and the right tube sheet 106. The presence of the gasket can effectively fill the small gap between the water chamber assembly and the tube sheet, prevent medium leakage, and improve the sealing performance of the heat exchanger. This is particularly important for application scenarios that require maintaining the purity of the medium and preventing pollution. The bolt and nut connection method makes the installation and disassembly of the water chamber assembly relatively simple and convenient. When maintenance or replacement of parts is required, the water chamber assembly can be easily disassembled, reducing maintenance costs and time costs. At the same time, the design of the gasket is also easy to replace. When the gasket is aged or damaged, it can be easily replaced to ensure the sealing performance of the heat exchanger. This design of the present invention enables the heat exchanger to adapt to different working conditions and medium requirements. By adjusting the material and thickness of the gasket, the requirements of different media for sealing performance can be met. At the same time, the connection method of the bolt and nut also has a certain degree of flexibility, and the tightening force can be adjusted as needed to adapt to different working pressure and temperature conditions.

[0025] The left water chamber assembly 103 includes a left water chamber shell 1031, a first left water chamber partition 1032, a second left water chamber partition 1033 and a left water chamber equipment flange 1034; the first left water chamber partition 1032 and the second left water chamber partition 1033 are arranged in sequence from top to bottom in the left water chamber shell 1031, and the left water chamber equipment flange 1034 is arranged at the end of the left water chamber shell 1031; the first left water chamber partition 1032 is arranged horizontally, and the second left water chamber partition 1033 is arranged with its left side tilted downward. The right water chamber assembly 104 includes a right water chamber shell 1041, a right water chamber partition 1042, and a right water chamber equipment flange 1043; the right water chamber partition 1042 is arranged inside the right water chamber shell 1041, and the right water chamber equipment flange 1043 is arranged at the end of the right water chamber shell 1041; the left end of the right water chamber partition 1042 is located in the middle of the right water chamber shell 1041, and the right end of the right water chamber partition 1042 is inclined downward.

[0026] A heat transfer pipe 107 is arranged inside the shell 110, and the heat transfer pipe 107 is connected between the left water chamber assembly 103 and the right water chamber assembly 104; the heat transfer pipe 107 adopts a telescopic pipe, and the expansion section and the contraction section of the heat transfer pipe 107 are arranged alternately in sequence; the strong vortex generated by the fluid in the expansion section can be fully utilized in the contraction section, and at the same time, the boundary layer flow velocity of the contraction section can be effectively increased, thereby significantly reducing the possibility of dirt in the fluid being deposited on the pipe wall.

[0027] A shell-side medium outlet 109 is provided below one end of the shell 110, and a shell-side medium inlet 108 is provided above the other end of the shell 110; the outer side of the left water chamber component 103 is connected to the tube-side medium inlet 101 and the tube-side medium inlet and outlet 102 at the top and bottom, respectively.

[0028] Specifically, the sewage pipe system includes a sewage pipe, a manual ball valve 201 and an electric ball valve 202; the sewage pipe includes a first pipe 117, a second pipe 118, a third pipe 119, a fourth pipe 120, a fifth pipe 121, a sixth pipe 122 and a seventh pipe 123; the right water chamber assembly 104 is connected to the second pipe 118 through the first pipe 117 and the third pipe 119 respectively, and the second pipe 118 is connected to the fourth pipe 120; the fourth pipe 120 is connected to the pipe medium inlet and outlet 102 through the seventh pipe 123; the fourth pipe 120 is connected to the left water chamber assembly 103 through the sixth pipe 122 and the fifth pipe 121 in sequence; the first pipe 117, the third pipe 119 and the seventh pipe 121 are all provided with a manual ball valve 201 and an electric ball valve 202.

[0029] Specifically, the control system includes a controller 301, a first input signal line 302, a second input signal line 303, a first output signal line 304, a second output signal line 305, a third output signal line 306, a pressure sensor 113 and an outlet pressure sensor 114; an inlet pressure sensor 113 is provided on the pipe-side medium inlet 101, and an outlet pressure sensor 114 is provided on the pipe-side medium inlet and outlet 102; the inlet pressure sensor 113 is connected to the controller 301 through the first input signal line 302, and the outlet pressure sensor 114 is connected to the controller 301 through the second input signal line 303, and the controller 301 is connected to the manual ball valve 201 and the electric ball valve 202 on the first piping 117, the third piping 119 and the seventh piping 121 through the first output signal line 304, the second output signal line 305 and the third output signal line 306 respectively.

[0030] When the anti-blocking heat exchanger of the utility model is in operation, the relatively dirty medium flows in the tube side, and the clean medium flows in the shell side. When the medium flows through the heat transfer tube of the heat exchanger, due to the influence of the flow velocity in the tube and the expansion of the tube diameter, the dirt is not easy to react with the tube wall to deposit and scale. When the medium leaves the heat transfer tube to the water chamber, due to the sudden slowdown of the flow velocity, some dirt and sediment will gradually sink. When reaching the lower part, it will be guided to the lowest area through the water chamber partition. After accumulating for a certain period of time or according to the change of the pressure difference between the inlet and outlet of the tube side medium, the sewage electric ball valve will be opened through the control program, and the pressure difference will be used to transport the dirt or sediment to the outlet end of the heat exchanger to complete the sewage discharge. When the heat exchanger has multiple processes, the sewage electric valve is opened to discharge sewage in sequence, and sewage is not discharged at the same time.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0033] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A blockage-proof heat exchanger, characterized in that: include: Heat exchanger body, sewage pipe system composition and control system; The heat exchanger body comprises a shell (110), and a left water chamber assembly (103) and a right water chamber assembly (104) are respectively arranged at two ends of the shell (110); a heat transfer pipe (107) is arranged inside the shell (110), and the heat transfer pipe (107) is connected between the left water chamber assembly (103) and the right water chamber assembly (104); the heat transfer pipe (107) adopts a telescopic pipe, and the expansion section and the contraction section of the heat transfer pipe (107) are arranged alternately in sequence; a shell-side medium outlet (109) is arranged below one end of the shell (110), and a shell-side medium inlet (108) is arranged above the other end of the shell (110); the outer side of the left water chamber assembly (103) is respectively connected to a tube-side medium inlet (101) and a tube-side medium inlet (102) at the top and bottom; The sewage pipe system comprises a sewage pipe, a manual ball valve (201) and an electric ball valve (202); the sewage pipe comprises a first pipe (117), a second pipe (118), a third pipe (119), a fourth pipe (120), a fifth pipe (121), a sixth pipe (122) and a seventh pipe (123); the right water chamber assembly (104) is connected to the second pipe (118) through the first pipe (117) and the third pipe (119), respectively. The second pipe (118) is connected to the fourth pipe (120); the fourth pipe (120) is connected to the pipe-side medium inlet and outlet (102) through the seventh pipe (123); the fourth pipe (120) is connected to the left water chamber assembly (103) through the sixth pipe (122) and the fifth pipe (121) in sequence; the first pipe (117), the third pipe (119) and the seventh pipe (123) are all provided with a manual ball valve (201) and an electric ball valve (202); The control system comprises a controller (301), a first input signal line (302), a second input signal line (303), a first output signal line (304), a second output signal line (305), a third output signal line (306), a pressure sensor (113) and an outlet pressure sensor (114); an inlet pressure sensor (113) is provided at the pipe-side medium inlet (101), and an outlet pressure sensor (114) is provided at the pipe-side medium inlet and outlet (102); the inlet pressure sensor (113) The outlet pressure sensor (114) is connected to the controller (301) through a first input signal line (302), the outlet pressure sensor (114) is connected to the controller (301) through a second input signal line (303), and the controller (301) is connected to the manual ball valve (201) and the electric ball valve (202) on the first pipe (117), the third pipe (119) and the seventh pipe (123) through a first output signal line (304), a second output signal line (305) and a third output signal line (306), respectively.

2. The anti-blocking heat exchanger according to claim 1, characterized in that: The left water chamber assembly (103) is mounted on the left tube plate (105) by means of bolts (115) and nuts (116), and a left water chamber gasket (111) is arranged between the left water chamber assembly (103) and the left tube plate (105).

3. The anti-blocking heat exchanger according to claim 1, characterized in that: The right water chamber assembly (104) is mounted on the right tube sheet (106) by means of bolts (115) and nuts (116), and a right water chamber gasket (112) is arranged between the right water chamber assembly (104) and the right tube sheet (106).

4. The anti-blocking heat exchanger according to claim 1, characterized in that: The left water chamber assembly (103) comprises a left water chamber shell (1031), a first left water chamber partition plate (1032), a second left water chamber partition plate (1033) and a left water chamber equipment flange (1034); the first left water chamber partition plate (1032) and the second left water chamber partition plate (1033) are arranged in sequence from top to bottom in the left water chamber shell (1031), and the left water chamber equipment flange (1034) is arranged at the end of the left water chamber shell (1031); the first left water chamber partition plate (1032) is arranged horizontally, and the second left water chamber partition plate (1033) is arranged with its left side tilted downward.

5. The anti-blocking heat exchanger according to claim 1, characterized in that: The right water chamber assembly (104) comprises a right water chamber shell (1041), a right water chamber partition plate (1042), and a right water chamber equipment flange (1043); the right water chamber partition plate (1042) is arranged inside the right water chamber shell (1041), and the right water chamber equipment flange (1043) is arranged at the end of the right water chamber shell (1041); the left end of the right water chamber partition plate (1042) is located in the middle of the right water chamber shell (1041), and the right end of the right water chamber partition plate (1042) is inclined downward.

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