CN217951256U - Air valve with pore plate detection device and air volume adjusting system - Google Patents
Air valve with pore plate detection device and air volume adjusting system Download PDFInfo
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- CN217951256U CN217951256U CN202222353508.2U CN202222353508U CN217951256U CN 217951256 U CN217951256 U CN 217951256U CN 202222353508 U CN202222353508 U CN 202222353508U CN 217951256 U CN217951256 U CN 217951256U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model provides an air valve with orifice plate detection device, include: the valve body comprises a cylinder body and a plurality of blades arranged in the cylinder body, and each blade can rotate in the cylinder body so as to adjust the opening of the valve body; the air outlet of the orifice plate flowmeter is connected with the air inlet of the valve body, and the orifice plate flowmeter is used for detecting the flow of the gas in the air valve. The utility model provides a flow detection device can effectively improve the detection precision of gaseous flow value. The utility model also provides an air regulation system.
Description
Technical Field
The utility model relates to a flow detection device technical field, in particular to blast gate and air regulation system with perforated plate detection device.
Background
The air volume adjusting system is widely applied to the fields of buildings, machinery and the like, and is used for adjusting ventilation volume inside the buildings or the machinery equipment so as to adjust the temperature, the humidity, the air pressure and the like of the space inside the buildings or the machinery equipment to a favorable state. For example, in building structures to ensure the safety and comfort of indoor personnel; the device is installed in mechanical equipment to ensure the stable operation of the equipment or ensure the quality of processed products and the like. In some occasions, the adjustment precision of the air volume adjusting system is very high, for example, in clean workshops and hospital operating rooms, the indoor ventilation volume needs to be accurately adjusted through the air volume adjusting system, so as to ensure the indoor environment to be clean and control the internal air pressure to be in a positive pressure state; for example, in a chemical laboratory, in order to ensure the health of laboratory personnel and prevent the diffusion of harmful gases in the room, it is necessary to discharge the harmful gases in time and strictly control the indoor air pressure in a negative pressure state, and so on.
The air quantity regulating system is communicated with a ventilating duct (air pipe) of a building structure or mechanical equipment, and comprises an air valve with a variable opening degree, and the air quantity in the air pipe can be regulated by regulating the opening degree of the air valve, so that the indoor air quantity is regulated. Before the air valve is used for adjusting the air quantity in the air pipe, the air quantity in the air pipe is measured firstly, and the measurement result is used as the basis of air quantity adjustment.
In the prior art, the air quantity in the air pipe is measured by arranging a detection device in the air pipe, but the conventional detection device often has the condition of inaccurate measurement result.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the inaccurate technical problem of present flow detection device testing result. The utility model provides an air valve and air regulation system with orifice plate detection device can effectively improve the detection precision of gaseous flow value.
An embodiment of the utility model provides an air valve with orifice plate detection device, include:
the valve body comprises a cylinder body and a plurality of blades arranged in the cylinder body, and each blade can rotate in the cylinder body to adjust the opening degree of the valve body.
And the air outlet of the orifice plate flowmeter is connected with the air inlet of the valve body, and the orifice plate flowmeter is used for detecting the flow of the fluid in the air valve.
Optionally, each blade encircles the circumference arrangement of barrel, and the blade is fan-shaped, and the valve body still includes:
the rotating shafts are arranged in the cylinder body, the number of the rotating shafts is the same as that of the blades, each blade is connected with one rotating shaft, and the axis of each rotating shaft is perpendicular to that of the cylinder body;
the transmission mechanism is arranged on the cylinder body, and each blade is connected with the transmission mechanism;
the driving mechanism is arranged on the cylinder body and connected with the transmission mechanism, and the transmission mechanism is used for driving the transmission mechanism to enable the transmission mechanism to drive each blade to synchronously rotate around the respective rotating shaft so as to switch the valve body between a closed state and an open state; wherein the content of the first and second substances,
in a closed state, the side ends of the adjacent blades are mutually attached, and the side ends extend along the radial direction of the cylinder;
in the open state, the side ends of adjacent blades are separated.
Alternatively, the transmission mechanism drives each blade to rotate synchronously by the same angle around the respective rotating shaft so as to switch the valve body between the closed state and the open state.
Optionally, actuating mechanism links to each other with at least one pivot, and inside drive mechanism located the barrel, drive mechanism included:
the mounting cylinder is arranged in the cylinder body, the axis of the mounting cylinder is superposed with the axis of the cylinder body, and the mounting cylinder is fixed on the cylinder body through a cross beam;
the second gear disc is arranged at one end of the mounting cylinder and can rotate around the mounting cylinder;
the third gear disc is arranged at the other end of the mounting cylinder and can rotate around the mounting cylinder, teeth distributed along the circumferential direction are arranged on the second gear disc and the third gear disc respectively, the teeth on the second gear disc and the teeth on the third gear disc are arranged oppositely, and each blade surrounds the outer sides of the second gear disc and the third gear disc;
and each second blade gear is arranged between the teeth of the second gear disc and the teeth of the third gear disc and is meshed with the teeth of the second gear disc and the teeth of the third gear disc.
Optionally, drive mechanism locates the barrel outside, and drive mechanism includes:
the first transmission part is annular, is sleeved on the outer surface of the cylinder and is connected with the driving mechanism;
the second transmission parts are in one-to-one correspondence with the blades, and each second transmission part is connected with the rotating shaft of the corresponding blade and is connected with the first transmission part;
the driving mechanism is used for driving the first transmission parts to rotate forwards or reversely along the circumferential direction so as to synchronously drive each second transmission part, so that each second transmission part drives the corresponding blade to rotate forwards or reversely around the corresponding rotating shaft;
in the process that the first transmission part rotates forwards along the circumferential direction, the valve body is switched from a closed state to an open state;
in the process that the first transmission part rotates reversely along the circumferential direction, the valve body is switched from the opening state to the closing state.
Optionally, the orifice plate flow meter comprises:
the air inlet pipe comprises a pipe body, a first air inlet pipe and a second air inlet pipe, wherein the pipe body is provided with an air inlet end and an air outlet end;
the pore plate is arranged in the pipe body, the pore plate is perpendicular to the axial direction of the pipe body, the first vent hole is positioned between the pore plate and the air inlet end of the pipe body, the second vent hole is positioned between the pore plate and the air outlet end of the pipe body, the edge of the pore plate is attached to the inner wall of the pipe body, and a through hole is formed in the center of the pore plate;
the detection mechanism is used for detecting a first pressure value of the gas flowing through the first vent hole and a second pressure value of the gas flowing through the second vent hole and outputting a difference value between the first pressure value and the second pressure value.
Optionally, a tip portion is arranged on the circumferential surface of the through hole, the tip portion is close to the air inlet end of the pipe body and is annularly arranged around the circumferential surface of the through hole, the tip portion points to the center of the through hole, and the diameter of a hole formed by the tip portion is smaller than that of the through hole.
Optionally, the method further comprises:
the detection mechanism is arranged in the control cabinet, a control system is also arranged in the control cabinet, and the control system is electrically connected with the detection mechanism;
one end of the first air pipe is communicated with the first vent hole, and the other end of the first air pipe is communicated with the detection mechanism;
and one end of the second air pipe is communicated with the second vent hole, and the other end of the second air pipe is communicated with the detection mechanism.
Optionally, the number of the first vent holes is at least two, the first vent holes are uniformly distributed along the circumferential direction of the pipe body, and each first vent hole is communicated with the first air pipe through a communicating air pipe and a communicating joint; the number of the second vent holes is at least two, the second vent holes are uniformly distributed and arranged along the circumferential direction of the pipe body, and the second vent holes are communicated with the second air pipe through a communicating air pipe and a communicating joint.
Optionally, the barrel and the tube body are of an integrated structure.
Optionally, the barrel is removably connected to the tube.
Optionally, be equipped with the pipeline between barrel and the body, the barrel can be dismantled the one end of being connected with the pipeline, and the body can be dismantled the other end of connecting in the pipeline.
The utility model discloses an embodiment still provides an air regulation system, including aforementioned any kind of blast gate.
Compared with the prior art the utility model discloses following beneficial effect has:
this embodiment is through setting up a plurality of blades in the valve body, and when the amount of wind was adjusted to needs, a plurality of blades rotated simultaneously, formed many evenly distributed's a gas flow channel to can make gaseous even stable through many gas flow channels, and then avoid because of the inaccurate problem of testing result that the skew of gas flow direction leads to. Moreover, the multi-blade structure can enable gas to uniformly and stably pass through the valve body, so that the conditions of turbulent flow, reverse flow and turbulent flow of the gas can be avoided, and the accuracy of a detection result is further enhanced. In addition, the flow is detected by the orifice plate flowmeter, and the detection result of the orifice plate flowmeter can change in real time along with the actual condition of the gas flow, so that the detection precision of the flow value of the gas can be more effectively improved.
Drawings
Fig. 1 is a schematic view of an air valve according to an embodiment of the present invention;
fig. 2 is a schematic view of a valve body according to an embodiment of the present invention;
fig. 3 is a schematic view of a valve body according to another embodiment of the present invention;
fig. 4 is a schematic diagram of a transmission mechanism provided in an embodiment of the present invention;
fig. 5 is a schematic view of a transmission mechanism provided in another embodiment of the present invention;
fig. 6 is a schematic view of a transmission mechanism provided by another embodiment of the present invention;
fig. 7 shows a schematic view of a transmission mechanism provided by another embodiment of the present invention;
fig. 8 is a schematic diagram of an orifice plate flow meter according to an embodiment of the present invention;
FIG. 9 shows a side view of FIG. 8;
FIG. 10 showsbase:Sub>A sectional view taken along line A-A of FIG. 9;
fig. 11 shows a partially enlarged view of a portion C in fig. 10;
fig. 12 shows a sectional view taken along line B-B of fig. 9.
Reference numerals are as follows:
1. the gas meter comprises a pipe body, 11, an air inlet end, 12, a first vent hole, 13, a second vent hole, 2, a control cabinet, 3, a transmission mechanism, 31, a transmission ring, 311, a first bump, 312, a second bump, 32, a blade deflector rod, 321, a first through hole, 33, a driving deflector rod, 331, a second through hole, 34, a connecting rod, 35, a rocker, 36, a first blade gear, 37, a driving gear, 38, a first gear disc, 41, a mounting cylinder, 42, a supporting beam, 43, a second gear disc, 44, a third gear disc, 45, a second blade gear, 5, a pore plate, 51, a through hole, 52, a tip, 7, a valve body, 71, a cylinder body, 72, a blade, 73, a rotating shaft, 74, a driving mechanism, 8, a first air pipe, 9, a second air pipe and 10, a pore plate flow meter.
Detailed Description
The following description is given for illustrative embodiments of the invention, and other advantages and effects of the invention will be apparent to those skilled in the art from the disclosure of the present invention. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are included to provide a thorough understanding of the invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the technical solutions and advantages of the present invention clearer, the following describes embodiments of the present invention in further detail.
In the prior art, the air quantity in the air pipe is measured by arranging a detection device in an air quantity regulating system, but the conventional detection device often has the condition of inaccurate measurement result. The applicant finds that the main reason that the detection result of the flow detection device in the existing air volume adjusting system is inaccurate is as follows: in practical application, in order to adjust the air volume in the system, a valve body is generally arranged in the downstream area of the flow detection device, and the sectional area of an air flow channel in the valve body is adjusted by controlling the rotation angle of blades in the valve body, so that the air volume is adjusted. However, because the existing valve body generally has a single-blade structure, the air flow is caused to deviate towards an opening formed after the blades rotate when passing through the valve body, so that the whole air flow path deviates, if the installation position of the detection device is close to the deviated air flow, the detection result is increased, and if the installation position of the detection device is far away from the deviated air flow, the detection result is reduced, so that the detection result is inaccurate; in addition, the air flow is not uniformly distributed when passing through the single-blade valve body, and turbulence, back flow, and turbulent flow are easily generated, which may also result in inaccurate flow rate detection results.
Referring to fig. 1, an embodiment of the present invention provides an air valve with a hole plate detection device, which includes a valve body 7 and a hole plate flowmeter 10. The valve body 7 includes a cylinder 71 and a plurality of vanes 72 provided in the cylinder 71, and each vane 72 is rotatable in the cylinder 71 to adjust the opening degree of the valve body 7. An air outlet of the orifice flowmeter 10 is connected to an air inlet of the valve body 7, and the orifice flowmeter 10 is configured to detect a flow rate of a fluid in the air valve, where the fluid is a gas in this embodiment.
This embodiment is through setting up a plurality of blades 72 in valve body 7, and when the amount of wind was adjusted to needs, a plurality of blades 72 rotated simultaneously, formed many evenly distributed's a gas flow channel to can make gaseous even stable through many gas flow channel, and then avoid the inaccurate problem of testing result because of gas flow direction skew leads to. In addition, the structure of the multiple blades 72 can make the gas uniformly and stably pass through the valve body 7, so that the conditions of turbulent flow, reverse flow and turbulent flow of the gas can be avoided, and the accuracy of the detection result is further enhanced. In addition, the flow rate is detected by the orifice plate flowmeter 10, and the detection result of the orifice plate flowmeter 10 can change in real time along with the actual condition of the gas flow rate, so that the detection precision of the gas flow rate value can be more effectively improved.
Alternatively, referring to fig. 2, each vane 72 is arranged around the circumference of the cylinder 71, the vanes 72 are fan-shaped, and the valve body 7 further includes a plurality of rotating shafts 73, the transmission mechanism 3, and the driving mechanism 74. The rotating shafts 73 are arranged in the cylinder 71, the number of the rotating shafts 73 is the same as that of the blades 72, each blade 72 is connected with one rotating shaft 73, and the axis of each rotating shaft 73 is perpendicular to that of the cylinder 71; the transmission mechanism 3 is arranged on the cylinder 71, and each blade 72 is connected with the transmission mechanism 3; the driving mechanism 74 is disposed on the cylinder 71, the driving mechanism 74 is connected to the transmission mechanism 3, and the driving mechanism 74 is configured to drive the transmission mechanism 3, so that the transmission mechanism 3 drives each of the vanes 72 to rotate synchronously around the respective rotating shaft 73, so as to switch the valve body 7 between the closed state and the open state. In the closed state, the side ends of the adjacent vanes 72 are attached to each other, and the side ends extend in the radial direction of the cylinder 71; in the open state, the side ends of the adjacent vanes 72 are separated. Preferably, the transmission mechanism 3 drives each vane 72 to rotate synchronously by the same angle about the respective rotation shaft 73 to switch the valve body 7 between the closed state and the open state. By adopting the technical scheme, the blades 72 synchronously rotate by the same angle, and the uniformity and stability of the airflow can be further ensured.
Specifically, the transmission mechanism 3 may be provided inside the cylindrical body 71 or outside the cylindrical body 71, and the following description will be made for each case.
When the transmission mechanism 3 is provided inside the cylinder 71, referring to fig. 3 and 4, the driving mechanism 74 is connected to at least one rotating shaft 73, and the transmission mechanism 3 includes: a mounting cylinder 41, a second gear plate 43, a third gear plate 44, and a plurality of second blade gears 45. Wherein, the mounting tube 41 is arranged in the cylinder 71, the axis of the mounting tube 41 is overlapped with the axis of the cylinder 71, and the mounting tube 41 is fixed on the cylinder 71 through the supporting beam 42; the second gear disc 43 is arranged at one end of the mounting cylinder 41, and the second gear disc 43 can rotate around the axis of the mounting cylinder 41; the third gear disc 44 is arranged at the other end of the mounting cylinder 41, the third gear disc 44 can rotate around the axis of the mounting cylinder 41, the second gear disc 43 and the third gear disc 44 are both provided with teeth distributed along the circumferential direction, the teeth on the second gear disc 43 and the teeth on the third gear disc 44 are arranged oppositely, and each blade 72 surrounds the outer sides of the second gear disc 43 and the third gear disc 44; the plurality of second blade gears 45 correspond to the plurality of rotating shafts 73 one by one, each second blade gear 45 is connected with the corresponding rotating shaft 73, the second blade gears 45 are arranged between the teeth of the second gear disc 43 and the third gear disc 44, and each second blade gear 45 is respectively meshed with the teeth of the second gear disc 43 and the teeth of the third gear disc 44.
When the blades 72 need to be driven to rotate, the driving mechanism 74 drives the blades connected with the driving mechanism and the rotating shaft 73 and the second blade gear 45 connected with the blades to rotate, the second blade gear 45 drives the second gear disc 43 and the third gear disc 44 to rotate, then the second gear disc 43 and the third gear disc 44 drive the rest of the second blade gear 45 to rotate, and further the rotating shaft 73 and the blades 72 connected with the rest of the second blade gear 45 are driven to rotate, so that the blades 72 are driven to rotate synchronously.
The transmission mechanism 3 is arranged in the cylinder 71, so that holes can be prevented from being formed in the cylinder 71, gas leakage can be prevented, and the structure can be used in occasions where air cannot leak, such as a clean room.
When the transmission mechanism 3 is provided outside the cylinder 71, as shown in fig. 2, the transmission mechanism 3 includes: the first transmission part and the second transmission part. The first transmission part is annular and is sleeved on the outer surface of the cylinder 71, and the first transmission part is connected with the driving mechanism 74; the first transmission unit is rotatable with respect to the cylinder 71, but is not movable in the axial direction of the cylinder 71. The second transmission portions correspond to the plurality of blades 72 one to one, and each of the second transmission portions is connected to the rotating shaft 73 of the corresponding blade 72 and is connected to the first transmission portion. The driving mechanism 74 is used for driving the first transmission parts to rotate forwards or backwards along the circumferential direction so as to synchronously drive each second transmission part, so that each second transmission part drives the corresponding blade 72 to rotate forwards or backwards around the respective rotating shaft 73; in the process that the first transmission part rotates forwards along the circumferential direction, the valve body 7 is switched from a closed state to an open state; in the process of the reverse rotation of the first transmission portion in the circumferential direction, the valve body 7 is switched from the open state to the closed state. By adopting the technical scheme, the transmission mechanism 3 is arranged outside the cylinder 71, so that the maintenance can be facilitated, and the closing tightness of the blades 72 can be enhanced.
The present application does not specifically limit the structures of the first transmission portion and the second transmission portion. In some embodiments, as shown in fig. 5, the first transmission portion is a transmission ring 31, the second transmission portion is a blade shift lever 32, one end of the blade shift lever 32 is rotatably connected to the transmission ring 31, the other end of the blade shift lever 32 is fixedly connected to a rotating shaft 73 of the blade 72, and the other end of each blade shift lever 32 can swing around a connecting point of the rotating shaft 73 and the blade shift lever 32. The outer peripheral surface of the driving ring 31 is provided with a plurality of first protrusions 311 corresponding to the plurality of blade shift levers 32 one to one, one end of the blade shift lever 32 is provided with a first through hole 321 extending along the extending direction of the blade shift lever 32, and the first protrusion 311 corresponding to the blade shift lever 32 is clamped in the first through hole 321 and can move along the hole wall of the first through hole 321. When the blade 72 needs to be driven to rotate, the driving mechanism 74 drives the driving ring 31 to rotate, and each first protrusion 311 drives the blade shift lever 32 to swing by taking a connection point of the rotating shaft 73 and the blade shift lever 32 as a pivot through a connection part with the first through hole 321, so as to drive the rotating shaft 73 and the blade 72 to rotate.
In other embodiments, as shown in fig. 6, the first transmission portion is a transmission ring 31, the second transmission portion includes a connecting rod 34 and a rocker 35, one end of the connecting rod 34 is rotatably connected to the transmission ring 31, the other end of the connecting rod is rotatably connected to one end of the rocker 35, and the other end of the rocker 35 is fixedly connected to the rotating shaft 73 of the vane 72. The transmission mechanism 3 further comprises a driving shift lever 33, one end of the driving shift lever 33 is rotatably connected with the transmission ring 31, and the other end of the driving shift lever 33 is fixedly connected with the driving mechanism 74; the driving mechanism 74 is used for driving the driving lever 33 to swing forward or backward so as to drive the transmission ring 31 to rotate forward or backward in the circumferential direction. The outer circumference of the driving ring 31 is provided with a second protrusion 312 corresponding to the driving lever 33, one end of the driving lever 33 is provided with a second through hole 331 extending along the extending direction of the driving lever 33, and the second protrusion 312 is engaged in the second through hole 331 and can move along the hole wall of the second through hole 331. When the blade 72 needs to be driven to rotate, the driving mechanism 74 drives the driving ring 31 to rotate through the driving lever 33, and the driving ring 31 drives the connecting rods 34 and the rocker 35 to operate, so as to drive the rotating shafts 73 and the blades 72 to rotate.
In other embodiments, as shown in fig. 7, the first transmission part is a first gear plate 38, and one end of the first gear plate 38 in the first direction is provided with teeth distributed along the circumferential direction; the second transmission part is a first blade gear 36, and the first blade gear 36 is fixedly connected with the rotating shaft 73 of the blade 72 and meshed with the teeth of the first gear disc 38. The transmission mechanism 3 further comprises a driving gear 37 fixedly connected to the driving mechanism 74 and engaged with the teeth of the first gear disc 38, and the driving mechanism 74 is configured to drive the driving gear 37 to rotate in a forward direction or a reverse direction so as to drive the first gear disc 38 to rotate in a forward direction or a reverse direction along the circumferential direction. When it is necessary to drive the blades 72 to rotate, the driving mechanism drives the first gear disc 38 to rotate through the driving gear 37, and the first gear disc 38 drives each first blade gear 36 to rotate, so as to drive each rotating shaft 73 and each blade 72 to rotate.
Referring to fig. 8 to 12, the orifice plate flow meter 10 includes: body 1, orifice plate 5 and detection mechanism. The tube body 1 has an air inlet end 11 and an air outlet end, and the tube wall of the tube body 1 is provided with a first vent hole 12 and a second vent hole 13 which are arranged at intervals along the axial direction (X direction shown in fig. 10) of the tube body 1; the pore plate 5 is arranged in the pipe body 1, the pore plate 5 is perpendicular to the axial direction of the pipe body 1, the first vent hole 12 is positioned between the pore plate 5 and the air inlet end 11 of the pipe body 1, the second vent hole 13 is positioned between the pore plate 5 and the air outlet end of the pipe body 1, the edge of the pore plate 5 is attached to the inner wall of the pipe body 1, a through hole 51 is arranged at the center of the pore plate 5, and the diameter (shown as a dimension D1 in fig. 10) of the through hole 51 is smaller than the inner diameter (shown as a dimension D in fig. 10) of the pipe body 1; the detection mechanism is used for detecting a first pressure value of the gas flowing through the first vent hole 12 and a second pressure value of the gas flowing through the second vent hole 13, and outputting a difference value between the first pressure value and the second pressure value.
In the present embodiment, the orifice plate 5 having the through hole 51 is provided in the tubular body 1, and the diameter of the through hole 51 is smaller than the inner diameter of the tubular body 1, so that the tubular body 1 having the orifice plate forms a venturi tube. According to the venturi principle, the gas flowing through the pipe body 1 may form a local contraction when passing through the through hole 51, resulting in an increase in the flow rate, so that the pressure value (i.e., the second pressure value) of the gas flow after passing through the through hole 51 is smaller than the pressure value (i.e., the first pressure value) of the gas flow before passing through the through hole 51. In this embodiment, the detection mechanism detects the first pressure value and the second pressure value, so as to obtain a pressure difference between the first pressure value and the second pressure value, and thus the gas flow rate value flowing through the pipe body 1 can be calculated according to the pressure difference and the bernoulli equation. Since the pressure difference between the first pressure value and the second pressure value varies in real time according to the actual gas flow in the pipe body 1, the present embodiment can effectively improve the detection accuracy of the gas flow.
Alternatively, referring to fig. 11, a tip portion 52 is provided on the circumferential surface of the through hole 51, the tip portion 52 is close to the air inlet end 11 of the pipe body 1 and the tip portion 52 is annularly provided around the circumferential surface of the through hole 51, the tip portion 52 points to the center of the through hole 51, and the diameter of the hole formed by the tip portion 52 (dimension d2 shown in fig. 11) is smaller than the diameter of the through hole 51 (dimension d1 shown in fig. 11); when the gas flows through the pipe body 1, the gas flow path is shown by a broken line L in fig. 10.
When calculating the gas flow value in the pipe body 1, the gas flow value can be calculated manually by an operator, or the first pressure value and the second pressure value can be transmitted to the control system, and the gas flow value is output after calculation by the control system. When the flow rate value of the gas is calculated by the control system, the present embodiment further includes: control cabinet 2, first trachea 8 and second trachea 9. The detection mechanism is arranged in the control cabinet 2, one end of the first air pipe 8 is communicated with the first vent hole 12, the other end of the first air pipe 8 is communicated with the detection mechanism, and the first air pipe 8 can guide the air flow passing through the first vent hole 12 into the detection mechanism so that the detection mechanism can detect a first pressure value of the air flowing through the first vent hole 12; one end of the second air pipe 9 is communicated with the second vent hole 13, the other end of the second air pipe 9 is communicated with the detection mechanism, and the second air pipe 9 can guide the air flow passing through the second vent hole 13 into the detection mechanism so that the detection mechanism can detect the second pressure value of the air flowing through the second vent hole 13. Specifically, in this embodiment, the detection mechanism is a pressure sensor, the control cabinet 2 is further provided with a controller, the controller is electrically connected to the detection mechanism, and the controller can read a difference between a first pressure value and a second pressure value output by the detection mechanism and calculate a flow value of the gas in the pipe body 1 according to the difference and a related formula.
Further, in this embodiment, the first pressure value and the second pressure value are both static pressure values, and the gas flow value in the pipe body 1 can be calculated by a preset formula, where the preset formula is derived by a bernoulli equation, and the preset formula is:
wherein q is v Is the flow rate value of the gas in the pipe body 1, and is expressed in m 3 S; c is the gas outflow coefficient, and epsilon is the gas expansibility coefficient; d is the diameter of the hole formed by tip 52 (dimension d2 as shown in fig. 11) in m; β is a ratio of a diameter of a hole formed by the tip portion 52 to an inner diameter (dimension D shown in fig. 11) of the tube body 1; rho is the density of the gas in kg/m 3 (ii) a Δ p is the difference between the first pressure value and the second pressure value in Pa.
Alternatively, referring to fig. 12, the number of the first ventilation holes 12 is at least two, each first ventilation hole 12 is uniformly distributed along the circumference of the pipe body 1, and each first ventilation hole 12 is communicated with the first air pipe 8 through a communication air pipe and a communication joint. The number of the second vent holes 13 is at least two, the second vent holes 13 are uniformly distributed and arranged along the circumferential direction of the pipe body 1, and the second vent holes 13 are communicated with the second air pipe 9 through communicating air pipes and communicating joints. By providing a plurality of first vents 12 and second vents 13, the airflow can be collected at a plurality of locations, thereby enhancing the accuracy of the detection.
In the present embodiment, the controller is electrically connected to the driving mechanism 74, and the controller can control the driving mechanism 74 to operate according to the measured flow rate value to adjust the opening degree of the valve body 7. When the measured flow value is smaller than the preset flow value, the opening degree of the valve body 7 is increased; when the measured flow value is greater than the preset flow value, the opening degree of the valve body 7 is decreased.
Optionally, the cylinder 71 is connected directly or indirectly to the tube 1. The cylinder 71 and the tube 1 may be an integral structure (as shown in fig. 8), and the cylinder 71 and the tube 1 may be detachably connected. Illustratively, the barrel 71 and the pipe body 1 may be connected by flanges (as shown in fig. 1), or may be connected by hoops, or the barrel 71 and the pipe body 1 may be in a socket structure, that is, the end of the pipe body 1 can be inserted into the barrel 71.
Optionally, a pipeline may be further disposed between the cylinder 71 and the pipe body 1, the cylinder 71 is detachably connected to one end of the pipeline, and the pipe body 1 is detachably connected to the other end of the pipeline. By arranging the pipeline between the cylinder 71 and the pipe body 1, the air valve can be installed according to actual conditions on site.
The utility model discloses an embodiment still provides an air regulation system, including aforementioned any kind of blast gate.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (13)
1. An air valve with a pore plate detection device is characterized by comprising:
the valve body comprises a cylinder body and a plurality of blades arranged in the cylinder body, and each blade can rotate in the cylinder body so as to adjust the opening of the valve body;
and the air outlet of the orifice plate flowmeter is connected with the air inlet of the valve body, and the orifice plate flowmeter is used for detecting the flow of the fluid in the air valve.
2. The damper of claim 1, wherein each of the plurality of vanes is arranged around a circumference of the barrel, the vanes having a fan shape, the valve body further comprising:
the rotating shafts are arranged in the cylinder body, the number of the rotating shafts is the same as that of the blades, each blade is connected with one rotating shaft, and the axis of each rotating shaft is perpendicular to that of the cylinder body;
the transmission mechanism is arranged on the cylinder body, and each blade is connected with the transmission mechanism;
the driving mechanism is arranged on the cylinder body and connected with the transmission mechanism, and the transmission mechanism is used for driving the transmission mechanism to enable the transmission mechanism to drive each blade to synchronously rotate around the respective rotating shaft so as to enable the valve body to be switched between a closed state and an open state; wherein the content of the first and second substances,
in the closed state, the side ends of the adjacent blades are attached to each other, and the side ends extend along the radial direction of the cylinder;
in the open state, the side ends of the adjacent blades are separated.
3. The damper according to claim 2, wherein the actuator drives each of the vanes to rotate synchronously through the same angle about the respective rotational axis to switch the valve body between the closed state and the open state.
4. The damper according to claim 2 or 3, wherein the driving mechanism is connected to at least one of the rotating shafts, the transmission mechanism is provided inside the cylinder, and the transmission mechanism comprises:
the mounting cylinder is arranged inside the cylinder body, the axis of the mounting cylinder is overlapped with the axis of the cylinder body, and the mounting cylinder is fixed on the cylinder body through a cross beam;
the second gear disc is arranged at one end of the mounting cylinder and can rotate around the mounting cylinder;
the third gear disc is arranged at the other end of the mounting cylinder and can rotate around the mounting cylinder, teeth distributed along the circumferential direction are arranged on the second gear disc and the third gear disc respectively, the teeth on the second gear disc and the teeth on the third gear disc are arranged oppositely, and each blade surrounds the outer sides of the second gear disc and the third gear disc;
and the second blade gears are in one-to-one correspondence with the rotating shafts, each second blade gear is connected with the corresponding rotating shaft, the second blade gears are arranged between the teeth of the second gear disc and the third gear disc, and the second blade gears are meshed with the teeth of the second gear disc and the teeth of the third gear disc.
5. The damper according to claim 2 or 3, wherein the transmission mechanism is provided outside the cylinder, the transmission mechanism comprising:
the first transmission part is annular, is sleeved on the outer surface of the cylinder and is connected with the driving mechanism;
the second transmission parts are in one-to-one correspondence with the blades, and each second transmission part is connected with the rotating shaft of the corresponding blade and is connected with the first transmission part;
the driving mechanism is used for driving the first transmission parts to rotate forwards or reversely along the circumferential direction so as to synchronously drive each second transmission part, so that each second transmission part drives the corresponding blade to rotate forwards or reversely around the corresponding rotating shaft;
in the process that the first transmission part rotates in the circumferential direction, the valve body is switched from the closed state to the open state;
in the process that the first transmission portion rotates reversely in the circumferential direction, the valve body is switched from the open state to the closed state.
6. The damper of claim 1, wherein the orifice plate flow meter comprises:
the air inlet pipe comprises a pipe body and a pipe body, wherein the pipe body is provided with an air inlet end and an air outlet end, and the pipe wall of the pipe body is provided with a first vent hole and a second vent hole which are arranged at intervals along the axial direction of the pipe body;
the pore plate is arranged in the pipe body, the pore plate is perpendicular to the axial direction of the pipe body, the first vent hole is positioned between the pore plate and the air inlet end of the pipe body, the second vent hole is positioned between the pore plate and the air outlet end of the pipe body, the edge of the pore plate is attached to the inner wall of the pipe body, and a through hole is formed in the center of the pore plate;
the detection mechanism is used for detecting a first pressure value of the gas flowing through the first vent hole and a second pressure value of the gas flowing through the second vent hole, and outputting a difference value between the first pressure value and the second pressure value.
7. The damper according to claim 6, wherein a tip portion is provided on a circumferential surface of the through hole, the tip portion is adjacent to the air inlet end of the pipe body and the tip portion is annularly disposed around the circumferential surface of the through hole, the tip portion points to a center of the through hole, and a diameter of a hole formed by the tip portion is smaller than a diameter of the through hole.
8. The damper of claim 7, further comprising:
the detection mechanisms are arranged in the control cabinet, a control system is also arranged in the control cabinet, and the control system is electrically connected with the detection mechanisms;
one end of the first air pipe is communicated with the first vent hole, and the other end of the first air pipe is communicated with the detection mechanism;
and one end of the second air pipe is communicated with the second vent hole, and the other end of the second air pipe is communicated with the detection mechanism.
9. The blast gate valve according to claim 8, wherein the number of said first ventilation holes is at least two, each of said first ventilation holes is uniformly arranged along the circumference of said pipe body, each of said first ventilation holes is communicated with said first air pipe through a communication air pipe and a communication joint; the number of the second vent holes is at least two, the second vent holes are uniformly distributed and arranged along the circumferential direction of the pipe body, and the second vent holes are communicated with the second air pipe through communicating air pipes and communicating connectors.
10. The damper according to any one of claims 6 to 9, wherein the barrel and the tubular body are of a unitary construction.
11. The damper according to any one of claims 6 to 9, wherein the barrel is removably connected to the tubular body.
12. The damper according to any one of claims 6 to 9, wherein a pipe is provided between the cylinder and the pipe body, the cylinder being detachably connected to one end of the pipe, and the pipe body being detachably connected to the other end of the pipe.
13. An air volume adjusting system comprising the damper according to any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222353508.2U CN217951256U (en) | 2022-09-05 | 2022-09-05 | Air valve with pore plate detection device and air volume adjusting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222353508.2U CN217951256U (en) | 2022-09-05 | 2022-09-05 | Air valve with pore plate detection device and air volume adjusting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217951256U true CN217951256U (en) | 2022-12-02 |
Family
ID=84211240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222353508.2U Active CN217951256U (en) | 2022-09-05 | 2022-09-05 | Air valve with pore plate detection device and air volume adjusting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217951256U (en) |
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2022
- 2022-09-05 CN CN202222353508.2U patent/CN217951256U/en active Active
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