CN111595769A

CN111595769A - Air heating device for salt spray test box

Info

Publication number: CN111595769A
Application number: CN202010624306.XA
Authority: CN
Inventors: 杨跃
Original assignee: Wuxi Shangkai Test Equipment Co ltd
Current assignee: Wuxi Shangkai Test Equipment Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2020-08-28
Anticipated expiration: 2040-07-01
Also published as: CN111595769B

Abstract

The application relates to the technical field of salt spray corrosion test equipment, in particular to an air heating device for a salt spray test box. The method and the device have the effect of reducing the influence on the accuracy of the test result.

Description

Air heating device for salt spray test box

Technical Field

The application relates to the technical field of salt spray corrosion test equipment, in particular to an air heating device for a salt spray test box.

Background

The salt spray test is an environmental test for examining the corrosion resistance of products or metal materials by mainly utilizing the artificial simulated salt spray environmental conditions created by salt spray test equipment. In the salt spray test box, the corrosion rate of the object to be tested is greatly increased, and the corrosion process which may originally need one year or even longer can be completed in a few days or 24 hours.

For the salt spray test, both the salt spray concentration and the ambient temperature are the main factors affecting the corrosion rate. In order to obtain accurate test results, the proper temperature is matched while a certain salt spray concentration is maintained in the test chamber.

The traditional salt spray test box realizes the control of the environmental temperature by utilizing a water heating mode: the high-power heating pipe is arranged in the box body, the heating pipe is immersed in water, the heating pipe heats the water to generate a large amount of water vapor, the water vapor is lifted and then is contacted with the salt mist, the heat is transferred to the salt mist, and the salt mist is kept at a certain temperature.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: when the steam transfers heat to the salt fog, a large amount of moisture can be introduced into the salt fog, the salt fog is greatly diluted, and the accuracy of a test result is influenced.

Disclosure of Invention

In order to reduce the influence to the test result accuracy, this application provides an air heating device for salt fog proof box.

The application provides an air heating device for salt fog proof box adopts following technical scheme:

an air heating device for a salt spray test chamber comprises a heating pipe arranged in a box body, and the heating pipe is partially or completely exposed in the air.

Through adopting above-mentioned technical scheme, heating pipe part or whole expose in the air, directly heat the air, and the hot-air come-up gives the salt fog with heat transfer, and does not introduce a large amount of moisture in to the salt fog, just can not dilute the salt fog by a wide margin yet, reduces the influence to the test result accuracy.

Preferably, a uniform heating plate is arranged above the heating pipe, and a plurality of air distribution holes are formed in the uniform heating plate in an array mode.

Through adopting above-mentioned technical scheme, hot-air meets even hot plate at the floating in-process, can only follow each gas distribution downthehole and pass, gets into even hot plate top region comparatively evenly to evenly give the salt fog with heat transfer.

Preferably, the heating pipe is positioned at the bottom of the box body, a water tank is arranged at the bottom of the box body, and the liquid level in the water tank is lower than the middle part of the heating pipe.

Through adopting above-mentioned technical scheme, the heating pipe sets up in the bottom half, can reduce the shared space of equipment, the cooperation basin absorbs the heat of heating pipe radiation downwards, avoid the box bottom surface to warp or age under the closely toasting of heating pipe, and the absorptive heat of basin diffuses to the air with vapor's form, also can improve the utilization efficiency of energy, for traditional technology, vapor's volume significantly reduced, the moisture of introducing in to the salt fog also can reduce, it is lower to salt fog's dilution degree, it is littleer to the influence of test result.

Preferably, an overflow column is arranged in the water tank, the overflow column is hollow, the bottom end of the overflow column is communicated with the outside of the water tank, an overflow hole is formed in the overflow column, the overflow hole is higher than the bottom end of the heating pipe, and the overflow hole is lower than the middle part of the heating pipe.

Through adopting above-mentioned technical scheme, when the liquid level in the basin rises to the overflow hole that exceeds, inside water can get into the overflow post through the overflow hole, and then arrange outside the basin, the liquid level in the basin can be guaranteed not to exceed the heating pipe middle part to the setting up of overflow post and overflow hole.

Preferably, the water tank is internally provided with an exhaust pipe, one end of the exhaust pipe is positioned below the liquid level, the other end of the exhaust pipe is connected with an air pump, one end of the air pump, which faces away from the exhaust pipe, is connected with an air inlet pipe, and one end of the air inlet pipe, which faces away from the air pump, is positioned above the liquid level.

Through adopting above-mentioned technical scheme, the air pump is with the air suction intake pipe of liquid level top, then through the blast pipe discharge into the basin, the air can absorb the heat of basin effectively when the floating in the basin, gets up this part heat utilization more fully.

Preferably, the uniform heating plate is of a double-layer hollow structure, a plurality of air suction holes are formed in the upper surface of the uniform heating plate and communicated with the cavity in the uniform heating plate, one end, back to the air pump, of the air inlet pipe is communicated with the cavity in the uniform heating plate, and the air distribution holes are not communicated with the cavity in the uniform heating plate.

Through adopting above-mentioned technical scheme, the air of even hot plate below is directly heated, and the temperature is obviously higher than the air of even hot plate top, so evenly arrange the upper surface at even hot plate with the suction hole, after intake pipe and the inside cavity intercommunication of even hot plate, can inhale the air of even hot plate top evenly, then discharge into the basin in, can improve the heat exchange efficiency of air and water, again can minimize the disturbance to the salt fog.

Preferably, an isolation cylinder is arranged in the water tank, the top end of the isolation cylinder is located above the liquid level, a through hole is formed in the bottom end of the side wall of the isolation cylinder, one end, back to the air pump, of the exhaust pipe penetrates through the side wall of the isolation cylinder, and the pipe orifice of the exhaust pipe is higher than the through hole.

Through adopting above-mentioned technical scheme, when the blast pipe was discharged to the basin in, the air current can disturb the water, forms the turbulent flow, sets up isolation section of thick bamboo then can be with turbulent flow restriction in the minim scope, makes the liquid level in the basin keep calm, and keeps apart a bottom and has seted up the through-hole, keeps apart inside and outside water of a section of thick bamboo and can the interchange, guarantees the heat supply to the air.

Preferably, a wire mesh is laid at the top end of the isolation cylinder.

Through adopting above-mentioned technical scheme, the air that is injected into the basin can carry more steam when breaking away from the basin, sets up the silk screen and then can guide the steam condensation, reduces the water content in this part of air, and then reduces the dilution degree of hot-air to the salt fog.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the heating pipe is partially or completely exposed in the air, so that a large amount of moisture is not introduced into the salt spray when the salt spray is heated, the salt spray is not greatly diluted, and the influence on the accuracy of a test result is reduced;

2. the water consumption is greatly reduced, and water resources are saved;

3. the heating pipe does not need to heat a large amount of water, so that the energy consumption is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of the internal structure of the water tank in the embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of an overflow column in an embodiment of the present application;

fig. 4 is a schematic cross-sectional view of an insulation cartridge in an embodiment of the present application.

Description of reference numerals: 1. heating a tube; 2. uniformly heating the plate; 3. a water tank; 4. a heat exchange assembly; 5. a box body; 21. distributing air holes; 22. a suction hole; 31. an overflow column; 32. an isolation cylinder; 33. a lower clamping block; 34. an upper clamping block; 35. a support cylinder; 311. an overflow aperture; 321. a through hole; 322. a wire mesh; 41. an air inlet pipe; 42. an air pump; 43. an exhaust pipe; 431. and (4) branch pipes.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses an air heating device for salt fog test box, refer to fig. 1, an air heating device for salt fog test box includes heating pipe 1, basin 3, even hot plate 2 and heat exchange assemblies 4. Wherein, even hot plate 2, heating pipe 1 and basin 3 set gradually in box 5 bottom region from top to bottom, and heat exchange assembly 4 is used for promoting the heat exchange between the air of even hot plate 2 top and the basin 3 internal water body.

Referring to fig. 1, a water tank 3 is arranged at the bottom of a box body 5 of the salt spray test box, and clean water is filled in the water tank 3.

Referring to fig. 2, five lower clamping blocks 33 are bolted to the bottom of the water tank 3, and upper clamping blocks 34 are bolted to the lower clamping blocks 33, respectively. The heating pipe 1 is a coil pipe, the heating pipe 1 is arranged along the horizontal direction, and the part of the heating pipe 1 above the water tank 3 is clamped and fixed by five groups of lower clamping blocks 33 and upper clamping blocks 34.

Referring to fig. 2 and 3, a hollow overflow column 31 is inserted into the bottom of the water tank 3, and a waterproof sealant is poured between the outer side wall of the overflow column 31 and the bottom of the water tank 3 to prevent water leakage. The top end of the overflow column 31 is lower than the axis of the heating pipe 1 and slightly higher than the bottom end of the heating pipe 1, the top end of the overflow column 31 is provided with overflow holes 311 in pairs, and the bottom end of the overflow column 31 is communicated with the outside of the water tank 3.

When the liquid level in the water tank 3 is higher than the top end of the overflow column 31, the excess water overflows out of the water tank 3. When the liquid level in the water tank 3 is highest, only a small part of the heating pipe 1 is submerged by water, and other parts are exposed in the air to directly heat the air.

Referring to fig. 1, ten support cylinders 35 are integrally formed at the bottom of the water tank 3, the support cylinders 35 are arranged in the vertical direction, and the heat uniforming plate 2 is horizontally placed on the support cylinders 35.

Referring to fig. 1, a plurality of air distribution holes 21 are formed in an array on a uniform heating plate 2, air below the uniform heating plate 2 uniformly penetrates through the air distribution holes 21 after being heated by a heating pipe 1, and then continuously floats upwards to transfer heat to salt fog.

Referring to fig. 2, the heat exchange assembly 4 is composed of an air inlet pipe 41, an air pump 42 and an air outlet pipe 43, wherein the air pump 42 is disposed outside the box body 5, one end of the air inlet pipe 41 and one end of the air outlet pipe 43 are located in the box body 5, and the other end of the air inlet pipe 41 and the other end of the air outlet pipe 43 penetrate through the box body 5 and are connected.

Referring to fig. 1, the heat distribution plate 2 is provided with a double-layer hollow structure, and the cavity inside the heat distribution plate 2 is not communicated with the air distribution holes 21, so as to form an independent air flow channel. In addition, a plurality of air suction holes 22 are formed in the upper surface array of the uniform heat plate 2, and the air suction holes 22 are communicated with the cavity inside the uniform heat plate 2.

Referring to fig. 1 and 2, the air inlet pipe 41 is a flexible pipe, one end of the air inlet pipe 41, which is back to the air pump 42, is communicated with the cavity inside the heat-uniforming plate 2, and air above the heat-uniforming plate 2 is uniformly sucked through the air suction holes 22.

Referring to fig. 2, an end of the air discharge pipe 43 facing away from the air pump 42 extends into the water tank 3 to introduce air into the water to perform heat exchange with the water body as sufficiently as possible.

Referring to fig. 2, after the air is introduced into the water, a plurality of separation cylinders 32 are bonded to the bottom of the water tank 3 to prevent a wide-range liquid surface surge. The end of the exhaust pipe 43 facing away from the air pump 42 is divided into a plurality of branch pipes 431, which are connected to the isolation cylinders 32, respectively.

Referring to fig. 4, the insulating cylinder 32 is a cylinder with its axis vertical. The top end of the isolation cylinder 32 is arranged in an open manner and is positioned above the liquid level, and the bottom ends of the side walls of the isolation cylinder 32 are provided with through holes 321 in pairs. The branch pipe 431 penetrates into the side wall of the isolation cylinder 32, and the nozzle of the branch pipe 431 is positioned below the liquid level and above the through hole 321.

Limited by the wall of the isolation cylinder 32, the liquid level surge is limited only at the inner side of the isolation cylinder 32, and the through hole 321 can ensure the circulation of water inside and outside the isolation cylinder 32.

Referring to fig. 4, a wire mesh 322 is bolted to the top end of the isolation cylinder 32, and the wire mesh 322 covers the opening of the isolation cylinder 32. The air after heat exchange with the water body is wrapped with more water vapor, and the wire mesh 322 is used for separating the water vapor from the air as much as possible.

The implementation principle of the embodiment is as follows:

the heating pipe 1 is partially or completely exposed to the air, and directly heats the air. The hot air floats upwards to transfer heat to the salt fog. In the process, the amount of the generated water vapor is greatly reduced, a large amount of water is not introduced into the salt spray, the salt spray is not greatly diluted, and the influence on the accuracy of the test result is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an air heating device for salt fog proof box, includes heating pipe (1) of setting in box (5), its characterized in that: the heating pipe (1) is partially or completely exposed to air.

2. The air heating apparatus for the salt spray test chamber as claimed in claim 1, wherein: a uniform heating plate (2) is arranged above the heating pipe (1), and a plurality of air distribution holes (21) are arranged on the uniform heating plate (2) in an array manner.

3. The air heating apparatus for the salt spray test chamber as claimed in claim 2, wherein: the heating pipe (1) is positioned at the bottom of the box body (5), the bottom of the box body (5) is provided with a water tank (3), and the liquid level in the water tank (3) is lower than the middle part of the heating pipe (1).

4. The air heating apparatus for the salt spray test chamber of claim 3, wherein: an overflow column (31) is arranged in the water tank (3), the overflow column (31) is arranged in a hollow mode, the bottom end of the overflow column (31) is communicated with the outside of the water tank (3), an overflow hole (311) is formed in the overflow column (31), the overflow hole (311) is higher than the bottom end of the heating pipe (1), and the overflow hole (311) is lower than the middle of the heating pipe (1).

5. The air heating apparatus for the salt spray test chamber of claim 3, wherein: be equipped with blast pipe (43) in basin (3), blast pipe (43) one end is located below the liquid level, and blast pipe (43) other termination has air pump (42), air pump (42) one end of blast pipe (43) dorsad has connect intake pipe (41), intake pipe (41) dorsad air pump (42) one end is located more than the liquid level.

6. The air heating apparatus for the salt spray test chamber of claim 5, wherein: the uniform heating plate (2) is of a double-layer hollow structure, a plurality of air suction holes (22) are formed in the upper surface of the uniform heating plate (2), the air suction holes (22) are communicated with the inner cavity of the uniform heating plate (2), one end, back to the air pump (42), of the air inlet pipe (41) is communicated with the inner cavity of the uniform heating plate (2), and the air distribution holes (21) are not communicated with the inner cavity of the uniform heating plate (2).

7. The air heating apparatus for the salt spray test chamber of claim 5, wherein: be equipped with in basin (3) and keep apart a section of thick bamboo (32), keep apart a section of thick bamboo (32) top and be located more than the liquid level, keep apart the lateral wall bottom of a section of thick bamboo (32) and seted up through-hole (321), blast pipe (43) air pump (42) one end dorsad wears to locate on the lateral wall of keeping apart a section of thick bamboo (32), and the mouth of pipe of blast pipe (43) is higher than through-hole (321).

8. The air heating apparatus for the salt spray test chamber of claim 7, wherein: and a silk screen (322) is laid at the top end of the isolation cylinder (32).