Maintenance pressure test device for heat exchanger

Abstract

The utility model discloses a heat exchanger maintenance pressure test device comprising an integral unit which comprises a pedestal, and the top surface of the pedestal is fixedly provided with a device block; the pressure testing unit comprises a motor fixedly connected to the inner wall of the device block, a threaded rod A is fixedly arranged on the right end face of an output rod of the motor, the surface of the threaded rod A is rotationally connected with the inner wall of the device block, a limiting rod is fixedly arranged on the inner wall of the device block, and a communicating pipe sleeves the surface of the threaded rod A in a threaded mode; the inner wall of the communicating pipe is slidably connected with the surface of the limiting rod. The threaded rod A rotates and is matched with limiting of the limiting rod to enable the communicating pipe to enter the heat transfer pipe, water is poured into the output pump through the liquid inlet pipe, water can be injected into the heat transfer pipe by starting the output pump, or air is introduced into the heat transfer pipe by starting the air pump, and then water pressure or air pressure control over the interior of the heat transfer pipe can be completed. Corresponding pressure test operation adjustment is carried out according to actual requirements, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger maintenance technology, and in particular to a heat exchanger maintenance and pressure testing device. Background Technology

[0002] Heat exchanger pressure testing refers to a hydrostatic test performed on the heat exchanger before installation or maintenance to check its sealing performance. The pressure test requires a high-pressure water pump to inject water into the heat exchanger and raise the pressure to a certain value, typically 1.5 times the rated working pressure.

[0003] Chinese patent discloses a heat exchanger maintenance and pressure testing device, publication number CN202916056U, which includes a blind plate with a thickness of 16mm to 40mm. A groove is made inside the blind plate, with one end of the groove located at the center of the plate surface and the other end located on the side of the blind plate. A pipeline is welded to the groove on the side of the blind plate, with one end of the pipeline connected to a first valve and a pressure gauge. During installation, only one end of the inlet pipeline needs to be disconnected, and it can be easily installed with the help of a pry bar or a hydraulic splitter, without the need for lifting, saving labor and machinery and improving maintenance efficiency.

[0004] When performing pressure testing on heat exchangers, this heat exchanger maintenance and pressure testing device typically uses either air or water pressure. It requires two different types of equipment for corresponding debugging, installation, and pressure testing, making it impossible to quickly assemble and test according to actual needs and thus meet more pressure testing requirements. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the problems existing in the current heat exchanger maintenance and pressure testing device, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a heat exchanger maintenance and pressure testing device, which is suitable for solving the problem that when performing pressure testing work on heat exchangers, the test is usually conducted by air pressure or water pressure, which requires two different devices for corresponding debugging, installation and pressure testing. It is not possible to quickly assemble and test according to the corresponding pressure testing method according to actual needs, so as to meet more pressure testing needs.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a heat exchanger maintenance and pressure testing device, comprising:

[0009] The unit includes a base, on the top surface of which a device block is fixedly mounted.

[0010] The pressure testing unit includes a motor fixedly connected to the inner wall of the device block. A threaded rod A is fixedly installed on the right end face of the motor output rod. The surface of the threaded rod A is rotatably connected to the inner wall of the device block. A limit rod is fixedly installed on the inner wall of the device block. A connecting pipe is threaded onto the surface of the threaded rod A. The inner wall of the connecting pipe is slidably connected to the surface of the limit rod. The side of the connecting pipe is slidably connected to the inner wall of the device block. An output pump is fixedly installed on the inner wall of the left end of the device block. An air pump is fixedly installed through the bottom surface of the output pump. The right side of the air pump is fixedly connected to the left side of the base. An inlet pipe is fixedly installed through the back of the output pump. A pressure gauge is fixedly installed on the top surface of the output pump. A delivery pipe is fixedly installed through the top surface of the device block. Two control heads are fixedly installed on the inner wall of the delivery pipe. The pressure testing unit also includes a sealing assembly.

[0011] The component unit includes a heat transfer tube, the inner walls of the left and right top ends of the heat transfer tube being respectively sealed and snapped onto the surfaces of two control heads.

[0012] As a preferred embodiment of the heat exchanger maintenance and pressure testing device of this utility model, the component unit further includes a drain pipe, the top surface of the drain pipe and the bottom surface of the heat transfer tube are fixedly connected, a baffle is fixedly provided on the inner wall of the heat transfer tube, and a tube box is fixedly provided on the inner wall of the heat transfer tube.

[0013] As a preferred embodiment of the heat exchanger maintenance and pressure testing device of this utility model, the sealing assembly further includes a baffle, a threaded rod B is fixedly provided on the right side of the heat transfer tube, the surface of the threaded rod B is engaged with the inner wall of the baffle, a fixing nut is threaded on the surface of the threaded rod B, the left side of the fixing nut is pressed against the right side of the baffle, and a sealing ring is fixedly provided on both the baffle and the inner wall of the connecting pipe.

[0014] As a preferred embodiment of the heat exchanger maintenance and pressure testing device of this utility model, four universal wheels are fixedly installed on the bottom surface of the four ends of the base, and parking plates are fixedly installed on the inner walls of the four universal wheels.

[0015] As a preferred embodiment of the heat exchanger maintenance and pressure testing device of this utility model, two supports are fixedly installed on the bottom surfaces of the left and right ends of the heat transfer tube, the two supports are L-shaped, and the top surfaces of the front and rear ends of the supports are fixedly opened with openings.

[0016] As a preferred embodiment of the heat exchanger maintenance and pressure testing device of this utility model, the liquid inlet pipe is wider at the top and narrower at the bottom, and the right end face of the output pump is fixedly provided with a gas delivery pipe and a water delivery pipe.

[0017] The beneficial effects of this utility model are as follows: When the motor is started, the threaded rod A rotates, and with the limiting rod, the connecting pipe enters the heat transfer tube. Water is poured into the output pump through the liquid inlet pipe, and the output pump can be started to inject water into the heat transfer tube. Alternatively, the air pump can be started to introduce gas into the heat transfer tube, thereby controlling the water pressure or air pressure inside the heat transfer tube. The corresponding pressure test operation can be adjusted according to actual needs, making it more widely applicable. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of a heat exchanger overhaul and pressure testing device proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the pressure testing unit structure of a heat exchanger overhaul and pressure testing device proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the structural components of a heat exchanger overhaul and pressure testing device proposed in this utility model.

[0022] Figure Descriptions: 100, Overall Unit; 101, Base; 102, Caster Wheel; 103, Device Block; 200, Component Unit; 201, Heat Transfer Tube; 202, Support; 203, Drain Pipe; 204, Baffle Plate; 205, Pipe Box; 300, Pressure Testing Unit; 301, Motor; 302, Threaded Rod A; 303, Limiting Rod; 304, Connecting Pipe; 305, Output Pump; 306, Air Pump; 307, Liquid Inlet Pipe; 308, Pressure Gauge; 309, Delivery Pipe; 310, Control Head; 311, Sealing Assembly; 3111, Sealing Ring; 3112, Baffle; 3113, Threaded Rod B; 3114, Fixing Nut. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Example

[0028] Reference Figures 1-3 This is one embodiment of the present invention, which provides a heat exchanger maintenance and pressure testing device including an overall unit 100, a pressure testing unit 300, and a component unit 200.

[0029] The overall unit 100 includes a base 101, a device block 103 is fixedly installed on the top surface of the base 101, and four universal wheels 102 are fixedly installed on the bottom surfaces of the four ends of the base 101 respectively. A parking plate is fixedly installed on the inner wall of each of the four universal wheels 102.

[0030] The pressure testing unit 300 includes a motor 301 fixedly connected to the inner wall of the device block 103. A threaded rod A302 is fixedly provided on the right end face of the output rod of the motor 301. The surface of the threaded rod A302 is rotatably connected to the inner wall of the device block 103. A limit rod 303 is fixedly provided on the inner wall of the device block 103. A connecting pipe 304 is threadedly sleeved on the surface of the threaded rod A302. The inner wall of the connecting pipe 304 is slidably connected to the surface of the limit rod 303. The side of the connecting pipe 304 is slidably connected to the inner wall of the device block 103. An output pump 305 is fixedly provided on the inner wall of the left end of the device block 103. An air pump 306 is fixedly provided through the bottom surface of the output pump 305. The right side of the air pump 306 is fixedly connected to the left side of the base 101. An inlet pipe 307 is fixedly provided through the back of the output pump 305. A pressure gauge 308 is fixedly installed on the top surface of the device block 103. A conveying pipe 309 is fixedly installed through the top surface of the device block 103. Two control heads 310 are fixedly installed on the inner wall of the conveying pipe 309. The pressure testing unit 300 also includes a sealing component 311. The sealing component 311 also includes a baffle 3112. A threaded rod B3113 is fixedly installed on the right side of the heat transfer tube 201. The surface of the threaded rod B3113 is engaged with the inner wall of the baffle 3112. A fixing nut 3114 is threaded on the surface of the threaded rod B3113. The left side of the fixing nut 3114 is pressed against the right side of the baffle 3112. A sealing ring 3111 is fixedly installed on the inner wall of both the baffle 3112 and the connecting pipe 304. The liquid inlet pipe 307 is wider at the top and narrower at the bottom. A gas delivery pipe and a water delivery pipe are fixedly installed on the right end of the output pump 305.

[0031] The component unit 200 includes a heat transfer tube 201. The inner walls of the top ends of the left and right sides of the heat transfer tube 201 are respectively sealed and snapped to the surfaces of two control heads 310. The component unit 200 also includes a drain pipe 203. The top surface of the drain pipe 203 is fixedly connected to the bottom surface of the heat transfer tube 201. A baffle 204 is fixedly installed on the inner wall of the heat transfer tube 201. A tube box 205 is fixedly installed on the inner wall of the heat transfer tube 201. Two supports 202 are fixedly installed on the bottom surfaces of the left and right ends of the heat transfer tube 201. The two supports 202 are L-shaped. Openings are fixedly opened on the top surfaces of the front and rear ends of the supports 202.

[0032] During use, the heat transfer tube 201 is first placed securely using two brackets 202, and the base 101 is moved to a suitable position using four casters 102. The two control heads 310 are inserted into the two top inlets of the heat transfer tube 201, and the baffle 3112 is snapped into the right side of the heat transfer tube 201. The fixing nut 3114 and the threaded rod B3113 are then threaded together to seal the right side of the heat transfer tube 201.

[0033] Start the motor 301 to rotate the threaded rod A302. With the limit rod 303, the connecting pipe 304 enters the heat transfer tube 201. Water is poured into the output pump 305 through the liquid inlet pipe 307. Start the output pump 305 to inject water into the heat transfer tube 201. Alternatively, start the air pump 306 to introduce gas into the heat transfer tube 201. By observing the two pressure gauges 308, the water pressure or air pressure inside the heat transfer tube 201 can be controlled.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heat exchanger maintenance and pressure testing device, characterized in that, include: The overall unit (100) includes a base (101) on which a device block (103) is fixedly disposed on the top surface; A pressure testing unit (300) includes a motor (301) fixedly connected to the inner wall of a device block (103). A threaded rod A (302) is fixedly mounted on the right end face of the motor (301) output rod. The surface of the threaded rod A (302) is rotatably connected to the inner wall of the device block (103). A limit rod (303) is fixedly mounted on the inner wall of the device block (103). A connecting pipe (304) is threaded onto the surface of the threaded rod A (302). The inner wall of the connecting pipe (304) is slidably connected to the surface of the limit rod (303). The side of the connecting pipe (304) is slidably connected to the inner wall of the device block (103). 103) An output pump (305) is fixedly installed on the inner wall of the left end. An air pump (306) is fixedly installed through the bottom surface of the output pump (305). The right side of the air pump (306) is fixedly connected to the left side of the base (101). An inlet pipe (307) is fixedly installed through the back of the output pump (305). A pressure gauge (308) is fixedly installed on the top surface of the output pump (305). A delivery pipe (309) is fixedly installed through the top surface of the device block (103). Two control heads (310) are fixedly installed on the inner wall of the delivery pipe (309). The pressure testing unit (300) also includes a sealing component (311). The component unit (200) includes a heat transfer tube (201), the inner walls of the top left and right sides of the heat transfer tube (201) being respectively sealed and snapped onto the surfaces of two control heads (310).

2. The heat exchanger overhaul and pressure testing device according to claim 1, characterized in that: The component unit (200) also includes a drain pipe (203), the top surface of which is fixedly connected to the bottom surface of the heat transfer pipe (201), a baffle plate (204) is fixedly provided on the inner wall of the heat transfer pipe (201), and a pipe box (205) is fixedly provided on the inner wall of the heat transfer pipe (201).

3. The heat exchanger overhaul and pressure testing device according to claim 1, characterized in that: The sealing assembly (311) also includes a baffle (3112). A threaded rod B (3113) is fixedly provided on the right side of the heat transfer tube (201). The surface of the threaded rod B (3113) is engaged with the inner wall of the baffle (3112). A fixing nut (3114) is threadedly fitted on the surface of the threaded rod B (3113). The left side of the fixing nut (3114) is pressed against the right side of the baffle (3112). A sealing ring (3111) is fixedly provided on the inner wall of both the baffle (3112) and the connecting tube (304).

4. The heat exchanger overhaul and pressure testing device according to claim 1, characterized in that: The base (101) has four casters (102) fixedly installed on the bottom surface of each of its four ends, and each of the four casters (102) has a parking plate fixedly installed on its inner wall.

5. The heat exchanger overhaul and pressure testing device according to claim 1, characterized in that: Two supports (202) are fixedly installed on the bottom surface of the left and right ends of the heat transfer tube (201). The two supports (202) are L-shaped, and openings are fixedly opened on the top surface of the front and rear ends of the supports (202).

6. The heat exchanger overhaul and pressure testing device according to claim 1, characterized in that: The inlet pipe (307) is wider at the top and narrower at the bottom, and the right end face of the output pump (305) is fixedly equipped with an air supply pipe and a water supply pipe.

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