Forced convection dynamic corrosion test equipment

Abstract

The utility model belongs to the technical field of corrosion test equipment, and provides forced convection dynamic corrosion test equipment which comprises a mounting rack, a test box, a comprehensive experiment tank, a lead-bismuth tank and a pipeline pump are respectively arranged in the mounting rack, and the test box, the comprehensive experiment tank, the lead-bismuth tank and the pipeline pump are mutually fixed with the mounting rack through bolts; a connecting pipe is arranged on the pipeline pump and is connected with the test box, the comprehensive test tank and the lead-bismuth tank in sequence; the connecting pipe comprises an outer pipe and an inner pipe; according to the scheme, in the using process, the connecting pipe has the heat preservation and cooling functions, and the using standard can be rapidly met according to the test requirement; a thermal insulation layer is arranged on the inner side; the heat preservation layer is clamped on the outer side of the inner pipe to preserve heat of the inner pipe; when the inner pipe needs to be cooled, a circulating pump is used for injecting heat conduction liquid or clear water into the heat conduction pipe, the inner pipe is spirally sleeved with the heat conduction pipe, the heat conduction pipe synchronously extends in the arrangement direction of the inner pipe, and the inner pipe can be actively cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of corrosion test equipment, in particular to forced convection dynamic corrosion test equipment. Background Art

[0002] The forced convection lead-bismuth circuit consists of a main circuit system, a dynamic corrosion branch and an electrical instrumentation system. It is mainly used to carry out experimental research on flow-induced vibration, flow heat transfer, lead-bismuth pump testing, industrial-grade oxygen control system testing and dynamic corrosion of liquid lead-bismuth. The dynamic corrosion equipment can complete industrial-grade oxygen control system testing and dynamic corrosion-related tests.

[0003] However, the existing corrosion test equipment has some shortcomings. For example, the corresponding data needs to be tested at different temperatures, and the traditional test pipes do not have active insulation and active cooling functions, which makes the temperature of the exposed pipes vary greatly. Each interval heating requires more energy, and it cannot actively absorb heat when cooling, and needs to wait for the cooling time. For this reason, we proposed a forced convection dynamic corrosion test equipment. Utility Model Content

[0004] The utility model aims to provide a forced convection dynamic corrosion test device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: A forced convection dynamic corrosion test device, comprising a mounting frame, wherein a test box, a comprehensive test tank, a lead-bismuth tank and a pipeline pump are respectively arranged in the mounting frame, and the test box, the comprehensive test tank, the lead-bismuth tank and the pipeline pump are fixed to the mounting frame by bolts;

[0006] The pipeline pump is provided with a connecting pipe, which is sequentially connected to the test box, the comprehensive test tank and the lead-bismuth tank; the connecting pipe includes an outer tube and an inner tube, and the outer tube includes two arc-shaped shells spliced ​​together;

[0007] The inner side of the outer tube is provided with a heat-insulating layer, and the inner tube is provided in the middle of the inner cavity of the outer tube; the outer side of the inner tube is sleeved with a heat-conducting pipe, which is a spiral pipe and extends synchronously along the arrangement direction of the inner tube.

[0008] Preferably, docking ears are symmetrically arranged on both sides of the arc-shaped shell, and the docking ears are locked by bolts.

[0009] Preferably, a support rod is provided between the outer wall of the inner tube and the inner wall of the outer tube, one end of the support rod is fixed on the inner wall of the outer tube, and the other end abuts against the outer wall of the inner tube, and the support rod is arranged at intervals along the arrangement direction of the inner tube.

[0010] Preferably, a built-in cavity is reserved between the thermal insulation layer and the inner tube, and the heat-conducting tube is arranged in the built-in cavity.

[0011] Preferably, a circulation pump is also provided on the left inner side of the mounting frame, and the circulation pump is interconnected with the heat conducting pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] During the use of this solution, the connecting pipe has the functions of heat preservation and cooling, and can quickly meet the use standards according to the needs of the test; an insulation layer is arranged on the inside; the insulation layer is clamped on the outside of the inner pipe to insulate the inner pipe; when the inner pipe needs to be cooled, a circulating pump is used to inject heat transfer liquid or clean water into the heat transfer pipe, and the heat transfer pipe is spirally sleeved on the inner pipe and extends synchronously along the arrangement direction of the inner pipe, which can actively cool the inner pipe; the heated clean water can be discharged to the outside for secondary utilization, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the utility model;

[0015] Figure 2 It is a partial schematic diagram of the connecting pipe of the utility model;

[0016] Figure 3 This is a cross-sectional view of the connecting pipe of the utility model;

[0017] Figure 4 This is a schematic diagram of the installation of the inner tube and the heat conducting tube of the utility model;

[0018] Figure 5 This is a schematic diagram of the installation of the inner tube and the support rod of the utility model.

[0019] In the figure: 1 mounting frame; 2 test box; 3 comprehensive test tank; 4 lead-bismuth tank; 5 pipeline pump; 6 connecting pipe; 7 circulation pump;

[0020] 601 outer tube; 602 docking ear; 603 inner tube; 604 thermal insulation layer; 605 inner cavity; 606 heat transfer tube; 607 support rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Example:

[0024] See also Figure 1-5 The utility model provides a technical solution of a forced convection dynamic corrosion test equipment: comprising a mounting frame 1, in which a test box 2, a comprehensive test tank 3, a lead-bismuth tank 4 and a pipeline pump 5 are respectively arranged, and the test box 2, the comprehensive test tank 3, the lead-bismuth tank 4 and the pipeline pump 5 are fixed to the mounting frame 1 by bolts;

[0025] The pipeline pump 5 is provided with a connecting pipe 6, which is sequentially connected to the test box 2, the comprehensive test tank 3 and the lead-bismuth tank 4;

[0026] The connecting pipe 6 includes an outer pipe 601 and an inner pipe 603. The outer pipe 601 includes two arc-shaped shells spliced ​​together, and docking ears 602 are symmetrically arranged on both sides of the arc-shaped shells. The docking ears 602 are locked by bolts.

[0027] The inner side of the outer tube 601 is provided with a heat-insulating layer 604, the inner tube 603 is provided in the middle of the inner cavity of the outer tube 601, and a support rod 607 is provided between the outer wall of the inner tube 603 and the inner wall of the outer tube 601, one end of the support rod 607 is fixed on the inner wall of the outer tube 601, and the other end abuts on the outer wall of the inner tube 603, and the support rod 607 is arranged at intervals along the arrangement direction of the inner tube 603;

[0028] The outer side of the inner tube 603 is sleeved with a heat conducting tube 606, which is a spiral tube and extends synchronously along the arrangement direction of the inner tube 603;

[0029] An internal cavity 605 is reserved between the insulation layer 604 and the inner tube 603, and a heat conducting tube 606 is arranged in the internal cavity 605;

[0030] A circulation pump 7 is also provided on the left side of the inner side of the mounting frame 1, and the circulation pump 7 is connected to the heat conducting pipe 606;

[0031] During use of this solution, the connecting pipe 6 has the function of heat preservation and cooling, and can quickly reach the use standard according to the test requirements;

[0032] Specifically, the connecting pipe 6 is sandwiched along the inner pipe 603 by short pipes connected in sequence, and the outer pipe 601 is spliced ​​by two arc-shaped shells, and an insulation layer 604 is arranged on the inner side; the insulation layer 604 is sandwiched on the outer side of the inner pipe 603 to keep the inner pipe 603 warm;

[0033] At the same time, the support rods 607 arranged at intervals in the outer tube 601 abut against the outer wall of the inner tube 603, so as to support the outer tube 601 and make it more firm after installation;

[0034] An internal cavity 605 is reserved between the heat-insulating layer 604 and the inner tube 603. A heat-conducting pipe 606 is arranged in the internal cavity 605. The heat-conducting pipe 606 is spirally sleeved on the inner tube 603 and extends synchronously along the arrangement direction of the inner tube 603.

[0035] When the inner tube 603 needs to be cooled, a circulating pump 7 is used to inject heat transfer liquid or clean water into the heat transfer tube 606. The circulating pump 7 is connected to both ends of the inlet and outlet of the heat transfer tube 606. The heat transfer liquid is injected into the inlet and discharged along the heat transfer tube 606. The discontinuity of the inner tube 606 is connected with an external water pipe, so that the heat transfer tube 606 forms a complete loop. The liquid in the tube is discharged from the outlet of the heat transfer tube 606 under the work of the circulating pump 7, and the heated clean water can be discharged to the outside for secondary use, which is very convenient.

[0036] The temperature of the inner tube 606 can be quickly reduced by the above-mentioned cooling method, and the temperature of the inner tube 606 can be quickly adjusted during the test, so that it has both heat preservation and cooling functions, which is very convenient;

[0037] The design pressure of the test equipment in this scheme is 1.0MPa, the design temperature is 600℃, the working pressure is 0~0.4MPa, the working temperature is 550℃; the design flow rate of the test medium is 4.0m 3 / h;

[0038] The inner tube 606 is heated to the test temperature using the built-in pipe heating wire and the constant temperature in the pipe is maintained. The temperature is controlled by PID regulation and is controlled synchronously with the insulation layer 604.

[0039] The lead-bismuth tank 4 is a horizontal container for storing the test medium; two sections of electric heating wire and heat-insulating material are wound around the outer surface of the tank body, which are used to preheat the tank body, melt the test medium in the tank, maintain the temperature in the tank, and prevent heat loss. The gap between the heating wire and the outer surface of the tank body is filled with heat-conducting mud, which can reduce the contact thermal resistance caused by the gap and is conducive to heat transfer; the heating wire on the outer wall of the lead-bismuth tank 4 is equipped with a corresponding temperature measuring point, and the value of the temperature measuring point is interlocked with the start-stop signal of the heating wire to maintain the tank body temperature within a suitable test temperature range;

[0040] The comprehensive experimental tank 3 is used as an expansion tank connected to the loop system, and also has a deoxygenation function. During deoxygenation, a reducing mixed gas is introduced into the test medium, and the mixed gas is contacted with the test medium by bubbling, and the dissolved oxygen in the test medium is removed by redox reaction. An electric heating wire and a heat preservation material are wound around the outside of the tank to preheat the tank, maintain the tank temperature and prevent heat loss.

[0041] The dynamic corrosion test steps are prior art and will not be described in detail here.

[0042] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A forced convection dynamic corrosion test device, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with a test box (2), a comprehensive test tank (3), a lead-bismuth tank (4) and a pipeline pump (5) respectively, and the test box (2), the comprehensive test tank (3), the lead-bismuth tank (4) and the pipeline pump (5) are fixed to the mounting frame (1) by bolts. The pipeline pump (5) is provided with a connecting pipe (6), and the connecting pipe (6) is sequentially connected to the test box (2), the comprehensive test tank (3) and the lead-bismuth tank (4); the connecting pipe (6) comprises an outer tube (601) and an inner tube (603), and the outer tube (601) comprises two arc-shaped shells spliced ​​together; A heat-insulating layer (604) is arranged on the inner side of the outer tube (601), and the inner tube (603) is arranged in the middle of the inner cavity of the outer tube (601); a heat-conducting pipe (606) is sleeved on the outer side of the inner tube (603), and the heat-conducting pipe (606) is a spiral tube, and the heat-conducting pipe (606) extends synchronously along the arrangement direction of the inner tube (603).

2. A forced convection dynamic corrosion test equipment according to claim 1, characterized in that: The two sides of the arc-shaped shell are symmetrically provided with docking ears (602), and the docking ears (602) are locked by bolts.

3. A forced convection dynamic corrosion test equipment according to claim 1, characterized in that: A support rod (607) is arranged between the outer wall of the inner tube (603) and the inner wall of the outer tube (601), one end of the support rod (607) is fixed on the inner wall of the outer tube (601), and the other end abuts against the outer wall of the inner tube (603), and the support rods (607) are arranged at intervals along the arrangement direction of the inner tube (603).

4. A forced convection dynamic corrosion test equipment according to claim 1, characterized in that: An internal cavity (605) is reserved between the thermal insulation layer (604) and the inner tube (603), and the heat conduction tube (606) is arranged in the internal cavity (605).

5. The forced convection dynamic corrosion test equipment according to claim 1, characterized in that: A circulation pump (7) is also provided on the left inner side of the mounting frame (1), and the circulation pump (7) is in communication with the heat conducting pipe (606).

Images