CN110057532A - Automatic drainage system and wind pressure test system applied to wind load actual measurement house - Google Patents

Abstract

The invention discloses an automatic drainage system and a wind pressure test system applied to a wind load actual measurement house, wherein the automatic drainage system comprises a pipeline body and a floating body, the wind pressure test system comprises a micro-pressure difference sensor, a measurement laboratory and a static pressure space arranged in the measurement laboratory, the micro-pressure difference sensor is connected to a static pressure probe through a static pressure pipeline, the micro-pressure difference sensor is also connected to a pressure measuring probe through two interfaces of a three-way pipe, and the third interface of the three-way pipe is connected to the automatic drainage system. The device disclosed by the invention is simple in principle, can realize drainage under the condition of airtight air pressure, and facilitates smooth experiment process.

Description

Automatic drainage system and wind pressure test system applied to houses with wind load measurement

technical field

The invention relates to the field of wind pressure testing, in particular to an automatic drainage system and a wind pressure testing system applied to a house for actual wind load measurement.

Background technique

The southeast coast of my country is a typhoon-prone area. Statistics show that the passage of typhoons every year will cause casualties and a lot of economic and property losses to the area. Among them, the loss caused by the damage of low-rise houses accounts for more than 50%. Due to the particularity of typhoons, it is difficult to simulate in the laboratory. Low-rise buildings generally have a simple interior space, so the internal pressure is very important, especially when there are obvious openings in the windward wall. The correlation between the peak internal pressure and the peak external pressure must be considered. Therefore, it is difficult to use the wind tunnel test method to determine the wind load of low-rise buildings, especially the details of buildings, such as overhangs, parapets, balconies, roof covering materials, etc., but these details are difficult to accurately simulate. It is precisely the structure that has a greater impact on the wind load of low-rise buildings. If the size of the model is too small, the Reynolds number will also decrease, making the air flow form inconsistent with the actual situation, resulting in the change of the wind pressure distribution. Therefore, field measurement has become the most effective research method at this stage, and has increasingly become a very important basic and long-term direction in structural wind resistance research.

In some existing wind pressure test systems, the micro-pressure differential sensor is provided with two measurement ports, which are used to measure the static pressure and the external total pressure at the same time, and then subtract the static pressure from the total pressure to obtain the internal dynamic pressure, and obtain the corresponding measurement results. During the measurement process, due to the typhoon weather will be accompanied by a certain amount of precipitation, the pipeline for measuring the total pressure will accumulate water. The pressure measuring probe or sensor is damaged; however, if the water is discharged too fast, the atmosphere at the end of the accumulated water in the stagnant water pipeline will be connected to the total pressure measurement pipeline, which will affect the experimental results.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide an automatic drainage system and a wind pressure test system applied to a house for actual wind load measurement, which can automatically drain excess water in the pipe, prevent the water from overflowing and damage the sensor, and at the same time ensure that a part of the water is retained inside. Accumulation of water to prevent it from communicating with external air pressure will affect the test results.

An automatic drainage system applied to a house where wind loads are measured, including a pipe body and a floating body arranged in the pipe body, the pipe body is vertically arranged, the upper end of the pipe body is a water inlet, and the lower end of the pipe body is a water outlet And the water outlet is provided with a valve, the floating body is arranged on the water flow channel formed by the water inlet and the water outlet, and a moving channel for the floating body to move up and down is reserved in the water flow channel, which is located below the moving channel. A first drain port is provided on the pipe body, a solenoid valve is provided in the first drain port, a first contact is provided on the pipe body above the moving channel, and the upper end of the floating body is correspondingly provided with a first contact. The second contact, the first contact and the second contact are respectively electrically connected with the solenoid valve through the cable. When the floating body moves to the upper end of the moving channel by the action of buoyancy, the first contact and the second contact are passed through the first contact and the second contact. The contacts are in contact, and the solenoid valve drains water through the first drain port after being energized.

Further, the inner wall of the pipe body protrudes radially inward to form a first step and a second step, the first step and the second step are arranged in sequence up and down along the axial direction of the pipe body, the first step and the second step are The moving channel is formed between the two steps.

Further, the pipe body includes a first pipe body, a second pipe body and a third pipe body which are arranged in sequence along the axial direction, and the first pipe body, the second pipe body and the third pipe body are axially between each other. The upper end of the first pipe body is a water inlet, the lower end of the third pipe body is a water outlet, and the inner diameters of the first pipe body and the third pipe body are smaller than the second pipe body, so that the first pipe body and the third pipe body are smaller than the second pipe body. The first step and the second step are respectively formed on the end faces of a pipe body and a third pipe body, the moving channel penetrates the second pipe body axially along the second pipe body, and the first contact It is arranged on the first pipe body, the first water outlet and the solenoid valve are arranged on the third pipe body, and both the first pipe body and the third pipe body are provided with a cable channel for the cable to pass through. .

Further, an inverted groove is provided on the end surface of the first step, and the contact piece of the first contact is provided in the inverted groove.

Further, the first contact is connected to the first pipe body through an elastic device, and the elastic device provides an elastic pre-tightening force for the first contact, so that after the first contact is in contact with the second contact, the The elastic device presses the second contact head against the first pipe body.

Further, the floating body is provided with a water flow collecting groove, the water current collecting groove is arranged in the center of the upper end of the floating body, and the bottom of the water current collecting groove is provided with an overflow hole.

Further, the upper end of the floating body is provided with a sealing layer, and the sealing layer can be used to seal the opening of the inverted groove when the floating body is located at the upper end of the moving channel.

Further, a vertical guide rail is provided in the moving channel, the vertical guide rail is axially arranged on the inner wall of the second pipe body along the second pipe body, the outer surface of the floating body is provided with a protrusion, the The protrusions are matched with the vertical guide rails for guiding when the floating body moves up and down.

Further, a second drain port is provided on the third pipe body, and a manual switch valve is provided in the second drain port.

A wind pressure test system, including a micro differential pressure sensor, a measurement laboratory, a three-way pipe and a static pressure probe, a pressure measurement probe is provided outside the measurement laboratory, and the micro differential pressure sensor has two ports, including a first port and the second port, the first port is connected to the static pressure probe through the static pressure pipeline, the static pressure probe measures the static pressure data through the static pressure pipeline, and the three interfaces of the tee are connected to the second port, Pressure measuring probe and automatic drainage system, the pressure measuring probe is used to measure the total pressure data, the dynamic pressure=total pressure-static pressure, the tail of the micro-pressure difference sensor is connected to the collector through a cable, and the collector connects the wind pressure The analog signal is converted into a digital signal, so as to complete the data acquisition work, and the automatic drainage system adopts the automatic drainage system as described in any one of the above, which is applied to the house where the wind load is actually measured.

Beneficial effects of the present invention: The present invention is applied to the automatic drainage system of the house where the wind load is measured. The first contact and the second contact are electrically connected to the solenoid valve through cables respectively. When the floating body is located at the upper end of the moving channel, the first contact The head and the second contact connect the circuit, the solenoid valve is opened, and the water is drained through the first water outlet. After the water in the pipe body is discharged, the floating body descends under the action of gravity. The water outlet is arranged between the water outlet and the moving channel. When the floating body reaches the bottom, the first contact and the second contact are disconnected, and the solenoid valve is closed, so that some water is retained in the pipe body to prevent water in the pipe body. Empty, thereby preventing the air pressure from being communicated with the external air pressure. The device of the invention has a simple principle, can ensure that the water can be drained under the condition of airtightness, and facilitates the smooth progress of the experiment process.

Description of drawings

In order to make the purpose, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for description:

Fig. 1 is the structural representation of the automatic drainage system of the present invention applied to the wind load measured house;

Figure 2 is a schematic structural diagram of a floating body at the bottom;

Fig. 3 is the enlarged view of Fig. 1 at B;

4 is a schematic structural diagram of a second pipeline body;

Fig. 5 is the structural representation along A-A of Fig. 4;

FIG. 6 is a schematic diagram of the wind pressure testing system of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

1 is a schematic structural diagram of an automatic drainage system of the present invention applied to a house with actual wind load measurement, FIG. 2 is a structural schematic diagram of a floating body at the bottom, FIG. 3 is an enlarged view of FIG. 1 at B, and FIG. 4 is the structure of the second pipe body Schematic diagram, FIG. 5 is a schematic diagram of the structure along A-A in FIG. 4 , and FIG. 6 is a schematic diagram of the wind pressure testing system of the present invention.

The present invention is applied to an automatic drainage system of a house where wind loads are measured, including a pipe body 1 and a floating body 2, the pipe body 1 is arranged vertically, the upper end of the pipe body 1 is the water inlet 3, and the lower end of the pipe body 1 is the outlet The water outlet 4 and the water outlet 4 are provided with a valve 27, the floating body 2 is arranged on the water flow channel formed by the water inlet 3 and the water outlet 4, and a moving channel for the floating body 2 to move up and down is reserved in the water flow channel. 5. A first drain port 6 is provided on the pipe body 1 under the moving passage 5, and a solenoid valve 7 is provided in the first drain port 6, and is located above the moving passage 5 on the pipe body. 1 is provided with a first contact 8, the upper end of the floating body 2 is correspondingly provided with a second contact 9, the first contact 8 and the second contact 9 are respectively electrically connected to the solenoid valve 7 through cables 10 , when the floating body 2 is located at the upper end of the moving channel 5, through the contact between the first contact 8 and the second contact 9, the solenoid valve 7 drains water through the first drain port 6 after being powered on, wherein 11 is the power supply.

The present invention is applied to the automatic drainage system of the house where the wind load is actually measured. The first contact 8 and the second contact 9 are respectively electrically connected to the solenoid valve 7 through the cable 10. When the floating body is located at the upper end of the moving channel, the first contact and the The second contact connects the circuit, the solenoid valve is opened, and the water is drained through the first drain port 6. After the water in the pipe body is discharged, the floating body 2 descends under the action of gravity. The first drain port 6 is arranged at the water outlet 4. In the area between the moving channel 5 and the moving channel 5, the horizontal plane will not be lower than the plane where the water outlet is located. After the floating body 2 reaches the bottom, the first contact 8 and the second contact 9 are disconnected, the solenoid valve 7 is closed, and the pipe body 1 is closed. Part of the water is retained in the interior, and the horizontal plane is higher than the plane where the solenoid valve 7 is located to prevent the water in the pipeline body 1 from being emptied, thereby preventing the air pressure in the pipeline body 1 from communicating with the external air pressure. It can realize drainage, which facilitates the smooth progress of the experimental process.

In this embodiment, the inner wall of the pipe body 1 protrudes radially inward to form a first step 12 and a second step 13 , and the first step 12 and the second step 13 are in order up and down along the axial direction of the pipe body 1 The moving channel 5 is formed between the first step 12 and the second step 13 . By arranging the first step 12 and the second step 13 , the distance that the floating body 2 moves up and down can be limited.

In this embodiment, the pipe body 1 includes a first pipe body 101 , a second pipe body 102 and a third pipe body 103 arranged in sequence along its axial direction. The first pipe body 101 , the second pipe body 102 and the The third pipe bodies 103 are fixed relative to each other in the axial direction. The upper end of the first pipe body 101 is the water inlet 3 , the lower end of the third pipe body 103 is the water outlet 4 , the first pipe body 101 and the third pipe body 101 are The inner diameter of the pipe body 103 is smaller than that of the second pipe body 102 , so that the end faces of the first pipe body 101 and the third pipe body 103 respectively form the first step 12 and the second step 13 . The second pipe body 102 axially penetrates the second pipe body 102, the first contact 8 is disposed on the first pipe body 101, and the first drain port 6 and the solenoid valve 7 are disposed in the third pipe On the body 103 , the first pipe body 101 and the third pipe body 103 are both provided with cable channels for the cables 10 to pass through. In this embodiment, the second pipe body 102 is screwed to the first pipe body 101 and the third pipe body 103 respectively, realizing a detachable connection mode of the three, which facilitates the installation and maintenance of the interior of the pipe body 1 and prevents the floating body 2 Getting stuck in the pipe body 1 results in the scrapping of the device.

In this embodiment, the end surface of the first step 12 is provided with an inverted groove 14, and the contact piece of the first contact 8 is disposed in the inverted groove 14. By arranging the inverted groove 14, it is possible to reduce the The contact probability between the first contact 8 and the water prevents the first contact 8 and the second contact 9 from being affected by water flow and conduction when they are in contact.

In this embodiment, the first contact 8 is connected to the first pipe body 101 through an elastic device 15, and the elastic device 15 uses a spring to provide elastic preload for the first contact 8, so that the first contact After the head 8 is in contact with the second contact 9 , the second contact 9 is pressed against the first pipe body 101 by the elastic device 15 . Through the elastic device 15, the floating body 2 can be lightly stuck above the moving channel 5, which can prevent the second contact 9 from descending when the floating body in the pipe body 1 is slightly lowered, thereby reducing the floating body 2 in the moving channel 5. The possibility of reciprocating movement within a short period of time reduces the wear of the device caused by the frequent contact between the first contact 8 and the second contact 9, and increases the reliability of the experiment. The drainage area of the floating body and the spring force can be adjusted as needed. preload.

In this embodiment, the floating body 2 is provided with a water flow collection groove 16, the water flow collection groove 16 is arranged in the center of the upper end of the floating body 2, and the bottom of the water flow collection groove 16 is provided with an overflow hole 17, and the overflow hole 17 The water flow velocity of the floating body 2 is lower than that of the first water outlet 6, so that when the upper water flow increases, the water flow collecting tank 16 can accumulate a certain amount of water. Because of the accumulation of water flow, the overall gravity of the floating body 2 increases, so it will break through the shackles of the elastic device 15 and renew Moving down, the solenoid valve 7 is disconnected to prevent the solenoid valve 7 from being opened for too long and causing air to enter. The overflow hole 17 is provided to prevent the water flow collecting tank 16 from being fully collected. The drainage rate is too fast.

In this embodiment, the upper end of the floating body 2 is provided with a sealing layer 18. When the floating body 2 is located at the upper end of the moving channel 5, the sealing layer 18 can be used to seal the opening of the inverted groove 14 and prevent the first contact 8 and the second contact 9 are affected by water current conduction when in contact.

In this embodiment, a vertical guide rail 19 is arranged in the moving channel 5 , and the vertical guide rail 19 is axially arranged on the inner wall of the second pipe body 102 along the second pipe body 102 . A protrusion 201 is provided on the outer surface, and the protrusion 201 cooperates with the vertical guide rail 19 for guiding when the floating body 2 moves up and down.

In this embodiment, the third pipe body 103 is provided with a second drain port 20, and a manual switch valve is provided in the second drain port 20, which can be used for manual draining.

The wind pressure test system includes a differential pressure sensor 21, a measurement laboratory 22, a tee pipe and a static pressure probe 25. A pressure measuring probe 24 is provided outside the measurement laboratory 22, and the micro differential pressure sensor has two ports , including a first port and a second port, the first port is connected to the static pressure probe 25 through the static pressure pipeline 26, the static pressure probe 25 measures the static pressure data through the static pressure pipeline 26, the three-way pipe The two interfaces are respectively connected to the second port, the pressure measuring probe 24 and the automatic drainage system. The pressure measuring probe 24 is used to measure the total pressure data, the dynamic pressure=total pressure-static pressure, and the tail of the micro differential pressure sensor 21 passes through The cable is connected to the collector 28, of which 29 is a constant voltage adapter, 30 is an industrial computer, and 31 is a computer for data processing. The collector 28 converts the wind pressure analog signal into a digital signal, thereby completing the data collection work. The pressure measurement and comparison of the static pressure and the external pressure by the micro-pressure difference sensor 21 belongs to the prior art, and will not be repeated here. This embodiment automatically drains water. The system adopts the automatic drainage system as described in any one of the above, which is applied to the house where the wind load is actually measured.

In this embodiment, the pressure measuring probe 24 is used to measure the external total pressure, and the micro differential pressure sensor 21 is provided with two measurement ports, which are respectively used to connect the pressure measuring probe 24 and the static pressure probe 25. The pressure measuring probe 24 measures the external total pressure. The static pressure probe 25 is connected to the static pressure space, and the static pressure data is measured, and then the internal dynamic pressure is obtained by subtracting the static pressure from the total pressure, and the corresponding measurement result is obtained. The three interfaces of the three-way pipe are respectively connected to the second port, the pressure measuring probe 24 and the automatic drainage system. The pressure measuring probe 24 adopts an external thread stainless steel hollow pipe, which is connected with an inner spiral casing on the outside and inside of the roof respectively. Fastening action, the water in the pressure measuring probe 24 flows through the automatic drainage system through the three-way pipe, and then is discharged through the automatic drainage system. The automatic drainage system adopts the automatic drainage system applied to the wind load measured house as described in any of the above, and the automatic drainage system is used to timely remove the rainwater flowing in from the pressure measuring probe 24 to prevent the rainwater from flowing into the micro-pressure difference sensor 21. to destroy it. The tail of the micro differential pressure sensor 21 is connected to the collector 28 through a cable, and the collector 28 converts the wind pressure analog signal into a digital signal, thereby completing the data collection work.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent replacements without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. being applied to the automatic drain system in wind load actual measurement house, it is characterised in that: including pipeline body and be arranged in pipe The intrinsic floating body in road, the pipeline body are vertically arranged, and the upper end of the pipeline body is water inlet, under the pipeline body End is water outlet and the water outlet is provided with valve, and the water stream channel of inlet and outlet formation is arranged in the floating body It is reserved for the movable passageway that the floating body moves up and down in the upper and described water stream channel, positioned at the lower section of the movable passageway in institute It states and is provided with the first discharge outlet on pipeline body, solenoid valve is provided in first discharge outlet, positioned at the movable passageway Top is provided with the first contact on pipeline body, and the upper end of the floating body is correspondingly arranged on the second contact, first contact Pass through cable respectively with the second contact and solenoid valve is electrically connected, when floating body is moved to the upper of movable passageway by the effect of buoyancy End is drained after the solenoid valves by first discharge outlet by first contact and the second contact.

2. the automatic drain system according to claim 1 applied to wind load actual measurement house, it is characterised in that: the pipe The inner wall of road ontology radially-inwardly convexes to form first step and second step, and the first step and second step are along pipeline The axial of ontology is set gradually up and down, and the movable passageway is formed between the first step and second step.

3. the automatic drain system according to claim 2 applied to wind load actual measurement house, it is characterised in that: the pipe Road ontology includes the first pipe ontology, second pipe ontology and third pipeline body axially set gradually along it, and described first Pipeline body, second pipe ontology and third pipeline body are between each other in axially opposing fixation, the upper end of first pipe ontology For water inlet, the lower end of the third pipeline body is water outlet, the internal diameter of the first pipe ontology and third pipeline body The respectively less than described second pipe ontology, so that the end face of first pipe ontology and third pipeline body is respectively formed the First Rank and second step, the movable passageway axially penetrate through the second pipe ontology along the second pipe ontology, and described One contact is arranged on first pipe ontology, and first discharge outlet and solenoid valve are arranged on third pipeline body, and described the The cable passage passed through for the cable is provided on one pipeline body and third pipeline body.

4. the automatic drain system according to claim 3 applied to wind load actual measurement house, it is characterised in that: described the Undercut slot is provided on the end face of one step, the contact of first contact is arranged in the undercut slot.

5. the automatic drain system according to claim 4 applied to wind load actual measurement house, it is characterised in that: described the One contact is connected to first pipe ontology by elastic device, and the elastic device provides elastic preload for first contact Power, so that the first contact is held out against second contact in the first pipe by the elastic device with after the second contact Road ontology.

6. the automatic drain system according to claim 5 applied to wind load actual measurement house, it is characterised in that: described floating Water flow collecting tank is offered on body, the upper end center of floating body, the bottom of the water flow collecting tank is arranged in the water flow collecting tank It is provided with overflow hole.

7. the automatic drain system according to claim 6 applied to wind load actual measurement house, it is characterised in that: described floating The upper end of body is provided with sealant, and the sealant can be used for sealing the undercut when floating body is located at the upper end of movable passageway The opening of slot.

8. the automatic drain system according to claim 7 applied to wind load actual measurement house, it is characterised in that: the shifting It is provided in dynamic channel and is vertically directed track, it is described to be vertically directed track and be axially disposed within second pipe along second pipe ontology The inner wall of ontology, the outer surface of the floating body are provided with protrusion, and the protrusion is vertically directed track cooperation with described, for floating It is oriented to when body moves up and down.

9. the automatic drain system according to claim 8 applied to wind load actual measurement house, it is characterised in that: described the It is provided with the second discharge outlet on three pipeline bodies, is provided with manual switch valve in second discharge outlet.

10. Pressure testing system, it is characterised in that: visited including micro-pressure sensor, surveying laboratory, tee tube and static pressure Head, is provided with survey pressure probe outside the surveying laboratory, the micro-pressure sensor tool there are two port, including first port and Second port, the first port are connected to the probe head of static pressure by static pressure pipeline, and the probe head of static pressure passes through static pressure pipeline Static pressure data are measured, three interfaces of tee tube are respectively connected to second port, survey pressure probe and automatic drain system, the survey Pressure probe passes through cable and acquisition for measuring stagnation pressure data, the tail portion of the dynamic pressure=stagnation pressure-static pressure, micro-pressure sensor Wind pressure analog signal is converted digital signal by device connection, collector, so that data acquisition works, the Auto-drainage system System is using such as the described in any item automatic drain systems applied to wind load actual measurement house of claim 1-9.