CN214416421U - Drainage device of low-pressure damp-heat test box - Google Patents
Drainage device of low-pressure damp-heat test box Download PDFInfo
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- CN214416421U CN214416421U CN202120566752.XU CN202120566752U CN214416421U CN 214416421 U CN214416421 U CN 214416421U CN 202120566752 U CN202120566752 U CN 202120566752U CN 214416421 U CN214416421 U CN 214416421U
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Abstract
The utility model discloses a drainage device of a low-pressure damp-heat test box, wherein a drain pipe is arranged at the bottom of the test box and is connected to a water storage tank; the water storage tank is connected to the vacuum pump through an extraction pipe, and a second vacuum valve is arranged on the extraction pipe. The utility model discloses a gas in the storage water tank is taken out through the extraction tube to the vacuum pump, reduces the pressure of storage water tank, makes storage water tank internal pressure equal the pressure in the proof box, and first vacuum valve opens, avoids the inside pressure oscillation of proof box, guarantees that the proof box continues the drainage smoothly.
Description
Technical Field
The utility model belongs to the technical field of the drainage technique of proof box and specifically relates to a drainage device of low atmospheric pressure damp and hot proof box.
Background
The damp-heat test chamber is a test device for simulating atmospheric climate environment, is widely applied to the fields of aerospace products, electronic instruments, materials, electrical and electronic products, various electronic components and the like, and is used for simulating and testing various performance indexes of products.
When the low-pressure damp-heat test box is used for carrying out a low-pressure damp-heat comprehensive test, because the pressure inside the test box is lower than the pressure outside the test box, accumulated water in the test box can not be smoothly discharged under the action of negative pressure, and can be deposited in the test box to influence the humidity in the test box, so that the test effect is influenced.
SUMMERY OF THE UTILITY MODEL
The applicant provides a drainage device of a low-pressure damp-heat test chamber with a reasonable structure, aiming at the defects that when the existing low-pressure damp-heat test chamber is used for performing a low-pressure-damp-heat comprehensive test, accumulated water in the chamber can not be smoothly discharged to influence the humidity in the chamber, and the like.
The utility model discloses the technical scheme who adopts as follows:
a drainage device of a low-pressure damp-heat test chamber is characterized in that a drain pipe is arranged at the bottom of the test chamber and connected to a water storage tank; the water storage tank is connected to the vacuum pump through an extraction pipe, and a second vacuum valve is arranged on the extraction pipe.
The utility model discloses a gas in the storage water tank is taken out through the extraction tube to the vacuum pump, reduces the pressure of storage water tank, makes storage water tank internal pressure equal the pressure in the proof box, and first vacuum valve opens, avoids the inside pressure oscillation of proof box, guarantees that the proof box continues the drainage smoothly.
As a further improvement of the above technical solution:
the drain pipe is provided with a first vacuum valve.
The water storage tank is provided with a discharge pipe.
The third vacuum valve is arranged on the discharge pipe.
The utility model discloses a during storage water tank drainage, the pipeline disconnection between storage water tank and the proof box can avoid the storage water tank to arouse the liquid level undulant because water discharges, and then arouses the pressure oscillation in the proof box, the effect of proof test.
A floating ball is arranged in the water storage tank.
The utility model discloses a floater in the storage water tank is used for monitoring the liquid level of storage water tank, when the water level is higher than the setting value, in time the drainage.
The utility model has the advantages as follows:
the utility model discloses a gas in the storage water tank is taken out through the extraction tube to the vacuum pump, reduces the pressure of storage water tank, makes storage water tank internal pressure equal the pressure in the proof box, and first vacuum valve opens, avoids the inside pressure oscillation of proof box, guarantees that the proof box continues the drainage smoothly.
The utility model discloses a during storage water tank drainage, the pipeline disconnection between storage water tank and the proof box can avoid the storage water tank to arouse the liquid level undulant because water discharges, and then arouses the pressure oscillation in the proof box, the effect of proof test.
The utility model discloses a floater in the storage water tank is used for monitoring the liquid level of storage water tank, when the water level is higher than the setting value, in time the drainage.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a test chamber; 11. a drain pipe; 2. a water storage tank; 21. extracting a pipe; 22. a discharge pipe; 23. a floating ball; 3. a first vacuum valve; 4. a vacuum pump; 5. a second vacuum valve; 6. and a third vacuum valve.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, a drain pipe 11 is arranged at the bottom of a test box 1 of the present invention, the drain pipe 11 is connected to a water storage tank 2, and a first vacuum valve 3 is arranged on the drain pipe 11; the water storage tank 2 is connected to the vacuum pump 4 through an extraction pipe 21, and the extraction pipe 21 is provided with a second vacuum valve 5. When the pressure in the test box 1 is lower than the external pressure and is at negative pressure, the first vacuum valve 3 is opened, the second vacuum valve 5 is closed, and accumulated water in the test box 1 is drained into the water storage tank 2 under the action of gravity; after water level sensor in the storage water tank 2 detected the water level and reached the upper limit, first vacuum valve 3 closed, second vacuum valve 5 closed, third vacuum valve 6 opened, after 2 interior water exhaust of storage water tank, third vacuum valve 6 closed, second vacuum valve 5 opened, the gas in the storage water tank 2 was taken out through extraction pipe 21 to vacuum pump 4, reduce storage water tank 2's pressure, make 2 internal pressure in the storage water tank equal to the pressure in proof box 1, first vacuum valve 3 opens, avoid 1 internal pressure oscillation of proof box, guarantee that proof box 1 continues the drainage smoothly.
As shown in fig. 1, a discharge pipe 22 is arranged on the water storage tank 2, and a third vacuum valve 6 is arranged on the discharge pipe 22; during the test, the third vacuum valve 6 is closed; when the water level in the water storage tank 2 is high and drainage is needed, the first vacuum valve 3 and the second vacuum valve 5 are closed, the third vacuum valve 6 is opened, and the water in the water storage tank 2 is drained through the drainage pipe 22. When the water storage tank 2 drains, the pipeline between the water storage tank 2 and the test box 1 is disconnected, so that the liquid level fluctuation caused by water discharge of the water storage tank 2 can be avoided, the pressure fluctuation in the test box 1 is further caused, and the test effect is ensured; after the water in the water storage tank 2 is drained, the third vacuum valve 6 is closed, then the second vacuum valve 5 is opened, and the first vacuum valve 3 is opened after a period of time, namely the first vacuum valve 3 is opened after the pressure in the water storage tank 2 is stabilized, so that the pressure fluctuation in the test box 1 caused by the sudden opening of the second vacuum valve 5 is avoided. A floating ball 23 is arranged in the water storage tank 2 and used for monitoring the liquid level of the water storage tank 2 and draining water in time when the water level is higher than a set value.
The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention.
Claims (5)
1. The utility model provides a drainage device of humid hot test box of low pressure, proof box (1) bottom is provided with drain pipe (11), its characterized in that: the drain pipe (11) is connected to the water storage tank (2); the water storage tank (2) is connected to the vacuum pump (4) through an extraction pipe (21), and a second vacuum valve (5) is arranged on the extraction pipe (21).
2. The drain device for the low-pressure thermal-humidity test chamber according to claim 1, wherein: the drain pipe (11) is provided with a first vacuum valve (3).
3. The drain device for the low-pressure thermal-humidity test chamber according to claim 1, wherein: the water storage tank (2) is provided with a discharge pipe (22).
4. The drain device for the low-pressure thermal-humidity test chamber according to claim 1, wherein: the third vacuum valve (6) is arranged on the discharge pipe (22).
5. The drain device for the low-pressure thermal-humidity test chamber according to claim 1, wherein: a floating ball (23) is arranged in the water storage tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120566752.XU CN214416421U (en) | 2021-03-19 | 2021-03-19 | Drainage device of low-pressure damp-heat test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120566752.XU CN214416421U (en) | 2021-03-19 | 2021-03-19 | Drainage device of low-pressure damp-heat test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214416421U true CN214416421U (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120566752.XU Active CN214416421U (en) | 2021-03-19 | 2021-03-19 | Drainage device of low-pressure damp-heat test box |
Country Status (1)
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| CN (1) | CN214416421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425461A (en) * | 2022-01-26 | 2022-05-03 | 江苏拓米洛环境试验设备有限公司 | Low-pressure test method and equipment |
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2021
- 2021-03-19 CN CN202120566752.XU patent/CN214416421U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425461A (en) * | 2022-01-26 | 2022-05-03 | 江苏拓米洛环境试验设备有限公司 | Low-pressure test method and equipment |
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