Multifunctional horizontal wind tunnel for dust environment simulation

Abstract

The utility model discloses a multifunctional horizontal wind tunnel for dust environment simulation, which comprises a rack, a high-speed wind measuring section, a flaring mixing section, a first uniform flow section and a second uniform flow section, the high-speed wind measuring section is connected with a small-diameter section of the flaring mixing section, a window door and a high-speed standard connecting port are arranged on the high-speed wind measuring section, and the first uniform flow section is connected with the second uniform flow section. The large-diameter end of the flaring mixing section is connected with the first flow uniformizing section, the first flow uniformizing section and the second flow uniformizing section are the same in diameter and round in cross section, a low-speed standard connecting port is formed in the top of the second flow uniformizing section, and a first sampling pipe mounting port and a second sampling pipe mounting port are formed in the bottom of the second flow uniformizing section. A temperature and humidity sensor is further mounted on the side wall of the second flow uniformizing section, and a side sampling calibration mounting opening is further formed in the side wall of the second flow uniformizing section; the side wall of the second uniform flow section is further provided with an operation window, the operation window is provided with an operation bin gate, the horizontal wind tunnel can meet the calibration of high and low wind speeds and dust concentration, and the adaptability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust environment simulation technical field especially relates to a dust environment simulation's multifunctional horizontal wind tunnel. BACKGROUND

[0002] At present, the calibration of dust concentration detection instrument is mostly completed through dust environment simulation equipment, and the generation and distribution of simulated dust need to use horizontal wind tunnel, at present, the upstream end of the horizontal wind tunnel is connected with dust emission device to emit dust to the horizontal wind tunnel, and the downstream end is connected with air exhaust fan to exhaust air, and dust-containing airflow is mixed and uniformly flowed through the horizontal wind tunnel to form dust environment.

[0003] For example, the utility model file with the authorized announcement number CN216524682U discloses a dust environment simulation device horizontal wind tunnel, however, the function of the horizontal wind tunnel is relatively single, and the following problems still exist: 1, the horizontal wind tunnel can only simply simulate dust environment, but since dust instruments are affected by factors such as wind speed, temperature and humidity during actual use, therefore, the horizontal wind tunnel cannot meet the calibration and detection of wind speed and temperature; 2, when the horizontal wind tunnel calibrates dust instruments, the window is opened, and the dust instruments are put into the horizontal wind tunnel for testing and calibration, and the structure has poor applicability, and it is mainly suitable for the calibration of some small dust instruments. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem that: provide a dust environment simulation's multifunctional horizontal wind tunnel, and the horizontal wind tunnel can meet the calibration of high and low wind speed and dust concentration, and has stronger adaptability.

[0005] The utility model discloses a kind of multi-functional horizontal wind tunnels of dust environment simulation, including rack, including high-speed wind measurement section, flared mixing section, first uniform flow section and second uniform flow section in order successively connected fixed on the rack according to the flow direction of air current, the high-speed wind measurement section is the wind measurement section of constant cross section, the high-speed wind measurement section is connected with the small diameter section of the flared mixing section, high-speed standard connection port for connecting standard high-speed anemograph is provided with window door for facilitating the placement of to-be-calibrated high-speed anemograph on the high-speed wind measurement section, the large diameter end of flared mixing section is connected with first uniform flow section, the diameter of first uniform flow section and second uniform flow section is same and cross section is circular, low-speed standard connection port for facilitating the connection of standard low-speed anemograph is provided on the top of second uniform flow section, first sampling tube mounting port and second sampling tube mounting port for facilitating the installation of dust instrument sampling tube are provided on the bottom of second uniform flow section, temperature and humidity sensor for detecting internal environment temperature and humidity is also installed on the side wall of second uniform flow section, a plurality of side sampling calibration mounting ports are also provided on the side wall of second uniform flow section, and each side sampling calibration mounting port, first sampling tube mounting port and second sampling tube mounting port are detachably mounted with plugging head, operating window is also provided on the side wall of second uniform flow section, and openable operating bin door is installed at operating window.

[0006] As a preferred scheme, the inside of the second uniform flow section is also fixed with an inner support, and the inner support is symmetrically provided with clamping blocks for mounting the first filter membrane sampling head and the second filter membrane sampling head.

[0007] As a preferred scheme, the inner support includes a first mounting block and a second mounting block welded in the inside of the second uniform flow section, and a fixed horizontal plate is detachably mounted between the first mounting block and the second mounting block, the clamping blocks are fixed on the fixed horizontal plate, and the clamping blocks are provided with clamping grooves for facilitating clamping of the first filter membrane sampling head or the second filter membrane sampling head.

[0008] As a preferred scheme, the fixed horizontal plate is provided with a plurality of fixed holes arranged in the transverse direction, and the clamping blocks are fixed on the fixed horizontal plate through bolts constrained in the fixed holes.

[0009] As a preferred scheme, the cross section of the high-speed wind measurement section is rectangular, the cross section of the upstream end of the flared mixing section is rectangular, the cross section of the downstream end is circular, and the barrel of the flared mixing section gradually and smoothly transitions from rectangular to circular.

[0010] As a preferred scheme, the outside of the high-speed wind measurement section, the flared mixing section, the first uniform flow section and the second uniform flow section is wrapped with thermal insulation material.

[0011] As a preferred scheme, the high-speed wind measuring section comprises a rectangular chamber fixed on a frame fixed by a U-shaped section, and a heat insulation plate is clamped in the U-shaped section and attached to the outer surface of the rectangular chamber.

[0012] As a preferred scheme, the flared mixing section, the first flow uniformizing section and the second flow uniformizing section are respectively provided with connecting end heads, the connecting end heads are locked and fixed by a lock buckle, and annular clamping grooves are arranged on the connecting end heads to facilitate clamping of heat insulation materials.

[0013] After the above technical scheme is adopted, the horizontal wind tunnel has at least the following advantages compared with the existing structure: 1. The cross section of the high-speed wind measuring section is the smallest, so the wind speed of the high-speed wind measuring section is the highest, and even a standard high-speed anemometer can be used to test the standard wind speed of the section. When the high-speed anemometer needs to be calibrated, the high-speed anemometer to be calibrated can be simply put into the window door; 2. The top of the second flow uniformizing section of the horizontal wind tunnel is provided with a low-speed standard connecting port for conveniently connecting a standard low-speed anemometer, so that the actual wind speed of the second flow uniformizing section can be detected to provide a wind speed reference for calibration of a dust instrument; when the low-speed anemometer needs to be calibrated, the operation door is opened and the low-speed anemometer is put into the operation window; 3. The bottom of the second flow uniformizing section is provided with a first sampling pipe mounting port and a second sampling pipe mounting port for conveniently mounting sampling pipes of the dust instrument, a temperature and humidity sensor for detecting the internal environment temperature and humidity is mounted on the side wall of the second flow uniformizing section, and a plurality of side sampling calibration mounting ports are arranged on the side wall of the second flow uniformizing section. The side sampling calibration mounting ports, the first sampling pipe mounting port and the second sampling pipe mounting port are all detachably provided with a plugging head, so that the plurality of sampling mounting ports can conveniently calibrate a large-size dust detection device, and the sampling pipe of the dust detection device only needs to be inserted into the interior of the second flow uniformizing section to calibrate. When a small dust instrument needs to be calibrated, it can also be directly put into the horizontal wind tunnel. In addition, the temperature and humidity sensor arranged on the second flow uniformizing section can record the temperature and humidity data at the time of calibration, so that the horizontal wind tunnel has more functions and can adapt to calibration of more high-speed and low-speed anemometers and dust instruments.

[0014] In addition, the interior of the second flow uniformizing section is further fixed with an inner support, and clamping blocks for mounting first filter membrane sampling heads and second filter membrane sampling heads are symmetrically arranged on the inner support, so that the first filter membrane sampling heads and the second filter membrane sampling heads can be mounted on the clamping blocks to realize filter membrane method sampling calibration.

[0015] And since the inner support includes a first mounting block and a second mounting block welded inside the second uniform flow section, a fixing horizontal plate is detachably mounted between the first mounting block and the second mounting block, the clamping block is fixed on the fixing horizontal plate, and the clamping groove for clamping the first filter membrane sampling head or the second filter membrane sampling head is arranged on the clamping block, so that only the clamping groove for clamping the first filter membrane sampling head or the second filter membrane sampling head needs to be clamped during installation, and the filter membrane can be conveniently taken out and weighed after sampling, and the operation is very convenient.

[0016] And since the fixing horizontal plate is provided with a plurality of fixing holes arranged transversely, and the clamping block is fixed on the fixing horizontal plate through bolts constrained in the fixing holes, the clamping block can be selectively fixed in different fixing holes, so that the fixing position is changed to meet the sampling demand of different positions.

[0017] And since the outer part of the high-speed wind measuring section, the flared mixing section, the first uniform flow section and the second uniform flow section is wrapped with thermal insulation material, the high-speed wind measuring section includes a rectangular chamber, the rectangular chamber is fixed on a frame fixed by a U-shaped profile, a thermal insulation plate is clamped in the U-shaped profile and attached to the outer surface of the rectangular chamber, the flared mixing section, the first uniform flow section and the second uniform flow section are respectively provided with connecting end heads at two ends, the connecting end heads are locked and fixed through a lock buckle, and the connecting end heads are provided with annular clamping grooves for conveniently clamping the thermal insulation material. The thermal insulation material can insulate the airflow inside the horizontal wind tunnel, so that only different temperature dust-containing gas needs to be introduced to simulate different temperature dust-containing environments, and the temperature fluctuation is smaller after insulation. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in connection with the drawings and embodiments.

[0019] Figure 1 It is the perspective view of the utility model embodiment;

[0020] Figure 2 It is the left view of the utility model embodiment;

[0021] Figure 3 It is Figure 2 Sectional view along A-A;

[0022] Figure 4 It is the front view of the utility model embodiment;

[0023] Figure 5 It is Figure 4 Sectional view along B-B;

[0024] Figure 6 It is the structure schematic view of the inner support part in the utility model embodiment;

[0025] In the drawing: 1. frame; 2. high-speed wind measurement section; 3. flared mixing section; 4. first uniform flow section; 5. second uniform flow section; 6. window door; 7. high-speed standard connection port; 8. low-speed standard connection port; 9. first sampling tube mounting port; 10. second sampling tube mounting port; 11. temperature and humidity sensor; 12. side sampling calibration mounting port; 13. operation bin door; 14. inner support; 15. first filter membrane sampling head; 16. second filter membrane sampling head; 17. clamping block; 18. first mounting block; 19. second mounting block; 20. fixed cross plate; 21. fixed hole; 22. connection end; 23. lock catch; 24. U-shaped profile; 25. dust instrument. DETAILED DESCRIPTION

[0026] The utility model will be described in further detail below through specific examples.

[0027] As Figures 1-6 shown in the drawing, a multifunctional horizontal wind tunnel for dust environment simulation includes a frame 1, and in the flow direction of the air flow, a high-speed wind measurement section 2, a flared mixing section 3, a first uniform flow section 4, and a second uniform flow section 5 are sequentially connected and fixed on the frame 1. The high-speed wind measurement section 2 is a wind measurement section with a constant cross section. The high-speed wind measurement section 2 is connected with the small-diameter section of the flared mixing section 3. The high-speed wind measurement section 2 is provided with a window door 6 for conveniently placing a calibration high-speed anemometer and a high-speed standard connection port 7 for connecting a standard high-speed anemometer. The large-diameter end of the flared mixing section 3 is connected with the first uniform flow section 4. The first uniform flow section 4 and the second uniform flow section 5 have the same diameter and a circular cross section. The top of the second uniform flow section 5 is provided with a low-speed standard connection port 8 for conveniently connecting a standard low-speed anemometer. The bottom of the second uniform flow section 5 is provided with a first sampling tube mounting port 9 and a second sampling tube mounting port 10 for conveniently mounting sampling tubes of a dust instrument. A temperature and humidity sensor 11 for detecting the internal environment temperature and humidity is also mounted on the sidewall of the second uniform flow section 5. A plurality of side sampling calibration mounting ports 12 are also provided on the sidewall of the second uniform flow section 5. Each side sampling calibration mounting port 12, the first sampling tube mounting port 9, and the second sampling tube mounting port 10 are detachably mounted with a plugging head. An operation window is also provided on the sidewall of the second uniform flow section 5, and an openable and closable operation bin door 13 is mounted at the operation window.

[0028] In the embodiment, the second uniform flow section 5 is internally fixed with an inner support 14, and the inner support 14 is symmetrically provided with clamping blocks 17 for mounting the first filter membrane sampling head 15 and the second filter membrane sampling head 16. The inner support 14 includes a first mounting block 18 and a second mounting block 19 welded in the second uniform flow section 5, and a fixed horizontal plate 20 is detachably mounted between the first mounting block 18 and the second mounting block 19, the clamping blocks 17 are fixed on the fixed horizontal plate 20, and the clamping blocks 17 are provided with clamping grooves for facilitating clamping of the first filter membrane sampling head 15 or the second filter membrane sampling head 16. The first filter membrane sampling head 15 and the second filter membrane sampling head 16 can be set according to requirements. The fixed horizontal plate 20 is provided with a plurality of horizontally arranged fixing holes 21, and the clamping blocks 17 are fixed on the fixed horizontal plate 20 by bolts constrained in the fixing holes 21.

[0029] In the embodiment, the cross section of the high-speed wind measurement section 2 is rectangular, the cross section of the upstream end of the flared mixing section 3 is rectangular, the cross section of the downstream end is circular, and the barrel of the flared mixing section 3 gradually and smoothly transitions from rectangular to circular. The high-speed wind measurement section 2, the flared mixing section 3, the first uniform flow section 4, and the second uniform flow section 5 are all wrapped with thermal insulation materials. Specifically, the high-speed wind measurement section 2 includes a rectangular chamber fixed on a frame fixed by a U-shaped profile 24, and a thermal insulation plate is clamped in the U-shaped profile 24 and attached to the outer surface of the rectangular chamber. The flared mixing section 3, the first uniform flow section 4, and the second uniform flow section 5 are respectively provided with connecting end heads 22, the connecting end heads 22 are locked and fixed by a lock buckle 23, and the connecting end heads 22 are provided with annular clamping grooves for facilitating clamping of thermal insulation materials.

[0030] In the working process, the cross section of the high-speed wind measurement section 2 is the smallest, so the wind speed of the high-speed wind measurement section 2 is the highest, and the connected standard high-speed anemometer can be used to test the standard wind speed of this section. When the high-speed anemometer needs to be calibrated, it only needs to be put into the window door 6. The top of the second uniform flow section 5 of the horizontal wind tunnel is provided with a standard low-speed anemometer, which can be used to detect the actual wind speed of the second uniform flow section 5 and provide a wind speed reference for the calibration of the dust instrument. When the low-speed anemometer needs to be calibrated, the operation bin door 13 can be opened and the low-speed anemometer can be put into the operation window, or the probe of the low-speed anemometer can be inserted into the side sampling calibration mounting port 12. The bottom of the second uniform flow section 5 is provided with a first sampling pipe mounting port 9 and a second sampling pipe mounting port 10 for facilitating the installation of the sampling pipe of the dust instrument. The sidewall of the second uniform flow section 5 is also provided with a plurality of side sampling calibration mounting ports 12, and each side sampling calibration mounting port 12, the first sampling pipe mounting port 9, and the second sampling pipe mounting port 10 are detachably mounted with a plug.

[0031] When the large size dust detection device needs to be calibrated, only the sampling tube of the large size dust detection device needs to be inserted into the inside of the second uniform flow section 5 to calibrate, when the small dust instrument needs to be calibrated, it can be directly put into the inside of the horizontal wind tunnel, meanwhile, the temperature and humidity sensor 11 for detecting the inside environment temperature and humidity is also installed on the side wall of the second uniform flow section 5, which can record the temperature and humidity data at the current calibration time. The first filter membrane sampling head 15 and the second filter membrane sampling head 16 are installed in the inside of the second uniform flow section 5, realizing the filter membrane method sampling calibration. And the fixing position of the first filter membrane sampling head 15 and the second filter membrane sampling head 16 can be changed by adjusting the clamping block 17 fixed in different fixing holes 21, so as to meet the sampling demand of different positions.

[0032] The air path system, the executing device such as the servo motor, the gear transmission mechanism and the screw nut mechanism mentioned in the embodiment are all the conventional technologies at present, the specific structure and principle of the air cylinder, the motor and other transmission mechanisms and other designs are disclosed in detail in the Mechanical Design Manual (the fifth edition) printed for the twenty-eighth time in Beijing in April, 2008, which belongs to the prior art, the structure is clear and explicit, the vacuum element, the gas circuit and the program control are disclosed in detail in the Modern Practical Pneumatic Technology (the third edition) SMC training teaching material published by the Mechanical Industry Press on August 1, 2008, which shows that the air path structure in the embodiment is also the prior art, which is clear and explicit, the control of the motor and the travel switch are also introduced in detail in the Motor Drive and Speed Regulation book published by the Chemical Industry Press on July 1, 2015, therefore, the circuit and the air path connection are clear.

[0033] The above described embodiments are only the description of the preferred embodiments of the utility model, not as the limitation of the scope of the utility model, on the basis of not departing from the design spirit of the utility model, various deformations and modifications of the technical scheme of the utility model are all should fall into the protection scope determined by the claim book of the utility model.

Claims

1. A multi-functional horizontal wind tunnel for dust environment simulation comprising a frame, characterized in that: The high-speed wind measuring section is connected in sequence with the flared mixing section, the first uniform flow section and the second uniform flow section in the flow direction of the air flow, the high-speed wind measuring section is a wind measuring section with constant cross section, the high-speed wind measuring section is connected with the small-diameter section of the flared mixing section, the high-speed wind measuring section is provided with a window door for placing a high-speed anemometer to be calibrated and a high-speed standard connecting port for connecting a standard high-speed anemometer, the large-diameter end of the flared mixing section is connected with the first uniform flow section, the first uniform flow section and the second uniform flow section have the same diameter and circular cross section, the top of the second uniform flow section is provided with a low-speed standard connecting port for connecting a standard low-speed anemometer, the bottom of the second uniform flow section is provided with a first sampling tube mounting port and a second sampling tube mounting port for mounting sampling tubes of dust instruments, a temperature and humidity sensor for detecting the internal temperature and humidity is mounted on the side wall of the second uniform flow section, and a plurality of side sampling calibration mounting ports are arranged on the side wall of the second uniform flow section, each side sampling calibration mounting port, the first sampling tube mounting port and the second sampling tube mounting port are detachably provided with a plugging head, and an operation window is arranged on the side wall of the second uniform flow section, and a closable operation compartment door is arranged on the operation window.

2. A multi-functional horizontal wind tunnel for dust environment simulation as claimed in claim 1, wherein: An inner support is fixed in the second uniform flow section, and first and second filter membrane sampling heads are symmetrically arranged on the inner support.

3. A multi-functional horizontal wind tunnel for dust environment simulation as claimed in claim 2, wherein: The inner support comprises first and second mounting blocks welded in the second uniform flow section, a fixed horizontal plate is detachably arranged between the first and second mounting blocks, the clamping blocks are fixed on the fixed horizontal plate, and clamping grooves are arranged on the clamping blocks for clamping the first or second filter membrane sampling head.

4. A multi-functional horizontal wind tunnel for dust environment simulation as claimed in claim 3 wherein: A plurality of fixed holes are arranged on the fixed horizontal plate in transverse arrangement, and the clamping blocks are fixed on the fixed horizontal plate by bolts constrained in the fixed holes.

5. A multi-functional horizontal wind tunnel for dust environment simulation as claimed in claim 1, wherein: The high-speed wind measuring section has a rectangular cross section, the upstream end of the flared mixing section has a rectangular cross section, and the downstream end has a circular cross section, and the barrel of the flared mixing section gradually and smoothly transitions from the rectangular cross section to the circular cross section.

6. A multi-purpose horizontal wind tunnel for dust environment simulation as claimed in claim 5, wherein: The high-speed wind measuring section, the flared mixing section, the first uniform flow section and the second uniform flow section are all wrapped with thermal insulation materials.

7. A multi-functional horizontal wind tunnel for dust environment simulation as claimed in claim 6, wherein: The high-speed wind measuring section comprises a rectangular chamber, the rectangular chamber is fixed on a frame fixed by a U-shaped profile, and a thermal insulation plate is clamped in the U-shaped profile and attached to the outer surface of the rectangular chamber.

8. A multi-purpose horizontal wind tunnel for dust environment simulation as claimed in claim 7, wherein: The flared mixing section, the first uniform flow section and the second uniform flow section are respectively provided with connecting end heads, the connecting end heads are locked and fixed by a lock, and the connecting end heads are provided with annular clamping grooves for clamping thermal insulation materials.

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