CN214793711U - Curtain wall wind pressure regulation test system - Google Patents

Abstract

The utility model discloses a curtain wall wind pressure regulation test system, which relates to the technical field of detection tests, and comprises a fan, wherein an air inlet of the fan is respectively connected with a second pipeline and a third pipeline through a first pipeline, and the second pipeline and the third pipeline are respectively provided with a first valve and a second valve which are matched with each other; an air outlet of the fan is respectively connected with a fifth pipeline and a sixth pipeline through a fourth pipeline, and the fifth pipeline and the sixth pipeline are respectively provided with a third valve and a fourth valve which are matched with each other; the other ends of the third pipeline and the fifth pipeline are both connected with a gas mixing bin, an outlet at the top of the gas mixing bin is in through connection with a box body through a seventh pipeline, a working pressure piece is arranged in the box body, and a pressure relief opening is formed in one side of the box body; the utility model discloses four pneumatic servo valves and fan have constituted five main input volumes of box wind pressure control, control the wind pressure through these five input volumes of combination, have increased the flexibility of control, simple structure, convenient to use.

Description

Curtain wall wind pressure regulation test system

Technical Field

The utility model relates to a detection test technical field, concretely relates to curtain wind pressure regulation test system.

Background

At present, two wind pressure adjusting modes are mainly available in the market, the first mode is that a variable frequency speed regulation mode is adopted to control the rotating speed of a fan so as to control the wind volume and further achieve the purpose of controlling the wind pressure; the second is to utilize a set of complex linkage valve regulating system to control the air quantity jointly by regulating valves and matching with a simple fan speed regulating function. The first is to the negative pressure, adopts nimble servo drive wind gap adjustment mechanism, can utilize same fan to realize the nimble switching of positive negative pressure like this. The second positive and negative pressure system is skillfully designed, and properly utilizes the phase difference between the four-way regulating valves, so that not only can positive and negative pressure switching be realized, but also active pressure relief can be conveniently realized, and the pressure conversion period of the box body is prolonged; the first method adopts a single air volume control method, namely the air volume is controlled only by a fan speed regulation mode, but due to the inertia of the fan, the frequency conversion speed regulation mode cannot meet the periodic alternating air pressure required in the third test content (wind pressure resistance test), namely the air pressure change with the period of 5-7 seconds cannot be achieved, the specific expression is that the pressurization is rapid, the decompression is slow, and in addition, the control method has higher requirements on a control algorithm, so the workload of software development is increased; in addition, the positive and negative pressure switching mechanism adopts wood as an installation bottom plate for flexible installation, in domestic actual use, the bottom plate is often expanded due to damp weather, so that the movement resistance of the servo mechanism is increased, and the motor is often burnt due to small torque of the selected servo motor, so that the normal use of the equipment is influenced; the product of second kind has adopted the mode control amount of wind of governing valve air booster speed governing in the aspect of the wind pressure governing system to reach the purpose of control wind pressure, because the response of governing valve is very fast, the precision is high, consequently the increase and decrease of control amount of wind that can be fine, thereby accurate control wind pressure curve. However, the design scheme has high requirements on the regulating valve, and firstly, the requirement on the very high response speed is high, and the response speed of a general butterfly valve is about 15s, namely the opening and closing time of 0-90 degrees needs 15 s. Furthermore, precise positioning accuracy is required, otherwise it is difficult to ensure a stable wind pressure curve.

Disclosure of Invention

The utility model provides an above-mentioned problem, a curtain wind pressure regulation test system has solved the inconvenient problem of current wind pressure regulation.

The utility model adopts the technical proposal that: a curtain wall wind pressure adjusting test system comprises a fan, a gas mixing bin and a box body; the air inlet of the fan is respectively connected with a second pipeline and a third pipeline through a first pipeline, and the second pipeline and the third pipeline are respectively provided with a first valve and a second valve which are matched with each other; an air outlet of the fan is respectively connected with a fifth pipeline and a sixth pipeline through a fourth pipeline, and the fifth pipeline and the sixth pipeline are respectively provided with a third valve and a fourth valve which are matched with each other; the other ends of the third pipeline and the fifth pipeline are both connected with a gas mixing bin, an outlet at the top of the gas mixing bin is connected with a box body through a seventh pipeline in a through mode, a working pressure piece is arranged in the box body, and a pressure relief opening is formed in one side of the box body; a shut-off valve is mounted on the seventh conduit.

Further, a pressure relief valve is further installed on the seventh pipeline, and the pressure relief valve is installed between the closing valve and the outlet at the top of the gas mixing bin.

Furthermore, an eighth pipeline is connected to one side of the seventh pipeline in a penetrating manner, a flowmeter is mounted on the eighth pipeline, and the shut-off valve and the pressure relief valve are mounted between two ends of the eighth pipeline.

Furthermore, silencers are respectively arranged on the second pipeline and the sixth pipeline, and the two silencers are respectively arranged on the outer sides of the first valve and the fourth valve.

Furthermore, the first valve, the second valve, the third valve and the fourth valve are all pneumatic servo valves.

Furthermore, a detachable sealing piece is arranged in the pressure relief opening.

The utility model has the advantages that:

the utility model provides a curtain wind pressure regulation test system, the positive and negative pressure can be changed quickly and efficiently only by changing the opening and closing of the closing valve without changing the steering direction of the fan during the positive and negative pressure switching, the problem that the positive and negative pressure switching is too slow due to the inertia of the fan is solved, and the working reliability of the fan is improved; the fans always work in the same direction to provide gas for the change of the pressure in the box body, the pressure change in the test box body is controlled by closing the valve opening and controlling the angle, and the response speed of wind pressure control is much higher than that of the wind pressure control by simply controlling the rotating speed of the fans; the utility model discloses four pneumatic servo valves and fan have constituted five main input volumes of box wind pressure control, can control the wind pressure through these five input volumes of combination, have increased the flexibility of control, simple structure, convenient to use.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

Fig. 1 is a schematic view of the overall structure of the present invention.

Reference numerals:

1-a fan, 2-a gas mixing bin, 3-a box body, 4-a working pressure piece and 5-a silencer;

11-a first pipeline, 12-a second pipeline, 13-a third pipeline, 14-a fourth pipeline, 15-a fifth pipeline, 16-a sixth pipeline, 17-a seventh pipeline, 18-an eighth pipeline;

s1-first valve, S2-second valve, S3-third valve, S4-fourth valve;

31-relief vent;

171-shut off valve, 172-relief valve;

181-flow meter.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1, a curtain wall wind pressure regulation test system comprises a fan 1, a gas mixing bin 2 and a box body 3; an air inlet of the fan 1 is respectively connected with a second pipeline 12 and a third pipeline 13 through a first pipeline 11, and the second pipeline 12 and the third pipeline 13 are respectively provided with a first valve S1 and a second valve S2 which are matched with each other and used for respectively opening and closing the second pipeline 12 and the third pipeline 13; an air outlet of the fan 1 is respectively connected with a fifth pipeline 15 and a sixth pipeline 16 through a fourth pipeline 14, and the fifth pipeline 15 and the sixth pipeline 16 are respectively provided with a third valve S3 and a fourth valve S4 which are matched with each other and used for respectively opening and closing the fifth pipeline 15 and the sixth pipeline 16; the other ends of the third pipeline 13 and the fifth pipeline 15 are both connected with a gas mixing bin 2, the third pipeline 13 and the fifth pipeline 15 can mix gas in the gas mixing bin 2, an outlet at the top of the gas mixing bin 2 is connected with a box body 3 in a penetrating way through a seventh pipeline 17, a working pressure piece 4 is arranged in the box body 3, and a pressure relief opening 31 is formed in one side of the box body 3; the seventh pipe 17 is provided with a shut-off valve 171.

The utility model provides a curtain wind pressure regulation test system, during the use, need rise the operating pressure spare, open fan 1, only need be in fan 1 normal work, open third valve S3 and first valve S1, close second valve S2 and fourth valve S4, open shutoff valve 171, then the rotational speed of rethread control fan 1 and third valve S3 and first valve S1 open, the purpose of closed angle reaches the regulation operating pressure spare.

When the positive pressure and the negative pressure need to be switched, the third valve S3 and the first valve S1 are closed, the second valve S2 and the fourth valve S4 are opened, the closing valve 171 is opened, and then the positive pressure and the negative pressure are adjusted by controlling the rotating speed of the fan 1 and the opening angles of the second valve S2 and the fourth valve S4.

The utility model discloses an in the embodiment, still install relief valve 172 on the seventh pipeline 17, relief valve 172 is installed between shut-off valve 171 and the exit of mixing 2 tops in the gas storehouse, and seventh pipeline 17 one side through connection has eighth pipeline 18, installs flowmeter 181 on the eighth pipeline 18, and shut-off valve 171 and relief valve 172 are installed between the both ends of eighth pipeline 18, guarantee in use safety and process control through relief valve 172 and flowmeter 181.

In an embodiment of the present invention, the second pipe 12 and the sixth pipe 16 are respectively installed with a silencer 5 for reducing noise, and the two silencers 5 are respectively installed outside the first valve S1 and the fourth valve S4.

In an embodiment of the present invention, the first valve S1, the second valve S2, the third valve S3 and the fourth valve S4 are all commercially available pneumatic servo valves.

The utility model discloses an in the embodiment, be equipped with the close stifled piece of detachable in the pressure release mouth 31, the back pressure release operation of finishing convenient to use.

The utility model provides a curtain wind pressure regulation test system, the positive and negative pressure can be changed quickly and efficiently only by changing the opening and closing of the closing valve without changing the steering direction of the fan during the positive and negative pressure switching, the problem that the positive and negative pressure switching is too slow due to the inertia of the fan is solved, and the working reliability of the fan is improved; the fans always work in the same direction to provide gas for the change of the pressure in the box body, the pressure change in the test box body is controlled by closing the valve opening and controlling the angle, and the response speed of wind pressure control is much higher than that of the wind pressure control by simply controlling the rotating speed of the fans; the utility model discloses four pneumatic servo valves and fan have constituted five main input volumes of box wind pressure control, can control the wind pressure through these five input volumes of combination, have increased the flexibility of control, simple structure, convenient to use.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (6)

1. A curtain wall wind pressure regulation test system is characterized by comprising a fan (1), a gas mixing bin (2) and a box body (3);

an air inlet of the fan (1) is respectively connected with a second pipeline (12) and a third pipeline (13) through a first pipeline (11), and the second pipeline (12) and the third pipeline (13) are respectively provided with a first valve (S1) and a second valve (S2) which are matched with each other; an air outlet of the fan (1) is respectively connected with a fifth pipeline (15) and a sixth pipeline (16) through a fourth pipeline (14), and the fifth pipeline (15) and the sixth pipeline (16) are respectively provided with a third valve (S3) and a fourth valve (S4) which are matched with each other; the other ends of the third pipeline (13) and the fifth pipeline (15) are both connected with a gas mixing bin (2), an outlet at the top of the gas mixing bin (2) is connected with a box body (3) in a through mode through a seventh pipeline (17), a working pressure piece (4) is arranged in the box body (3), and a pressure relief opening (31) is formed in one side of the box body (3); a shut-off valve (171) is mounted on the seventh pipe (17).

2. The curtain wall wind pressure regulation test system according to claim 1, wherein a pressure relief valve (172) is further installed on the seventh pipeline (17), and the pressure relief valve (172) is installed between a closing valve (171) and an outlet at the top of the gas mixing bin (2).

3. The curtain wall wind pressure regulation test system according to claim 1, wherein an eighth pipeline (18) is connected to one side of the seventh pipeline (17), a flowmeter (181) is installed on the eighth pipeline (18), and the shut-off valve (171) and the pressure relief valve (172) are installed between two ends of the eighth pipeline (18).

4. The curtain wall wind pressure regulation test system according to claim 1, wherein a silencer (5) is respectively mounted on the second pipeline (12) and the sixth pipeline (16), and two silencers (5) are respectively mounted outside a first valve (S1) and a fourth valve (S4).

5. The curtain wall wind pressure regulation test system according to claim 1, wherein the first valve (S1), the second valve (S2), the third valve (S3) and the fourth valve (S4) are all pneumatic servo valves.

6. The curtain wall wind pressure regulation test system according to claim 1, wherein a detachable sealing piece is arranged in the pressure relief opening (31).

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