CN216555640U

CN216555640U - Air valve flowmeter

Info

Publication number: CN216555640U
Application number: CN202123243320.4U
Authority: CN
Inventors: 何玉川; 刘明生; 王勇; 赵建强
Original assignee: Jiangsu Baishide Metrology Equipment Co ltd
Current assignee: Jiangsu Baishide Metrology Equipment Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-17
Anticipated expiration: 2031-12-22

Abstract

The utility model belongs to the field of flowmeters, in particular to an air valve flowmeter, which aims at the problems of lower measurement accuracy and limited application range of the existing variable air volume butterfly valve and provides a scheme that the air valve flowmeter comprises a valve body, wherein openings are formed in the left side and the right side of the valve body, an actuator is fixedly installed at the top of the valve body, a transmission shaft assembly is connected onto an output shaft of the actuator in a transmission manner, the bottom of the transmission shaft assembly extends into the valve body and is fixedly provided with a transmission shaft, a square pipe is fixedly installed at the bottom of the transmission shaft, a left valve disc and a right valve disc are fixedly installed on the left side and the right side of the square pipe respectively, and a torque sensor is fixedly installed on the transmission shaft.

Description

Air valve flowmeter

Technical Field

The utility model relates to the technical field of flowmeters, in particular to an air valve flowmeter.

Background

With the development of society, various industries put higher requirements on the performance of the flow meter and need to meet the application requirements of high precision, high range ratio and the like. Incorrect flowmeter model selection, pipeline network design and the like can cause various problems such as low measurement accuracy, high failure rate and the like. The measurement accuracy of flow measurement products is applied to the present industry, the challenge is provided for installation, cost and the like, the flow meter can realize measurement and control integration, the flow meter is mainly used for detecting the flow velocity of fluid media and accurately adjusting the flow through a right valve disc, the flow is uploaded to a superior controller through analog quantity or ModBus communication, the flow is accurately adjusted through the left valve disc and the right valve disc, the indoor temperature or pressure or other control targets are guaranteed, the variable air volume air conditioning system is suitable for being used in places where variable air volume air conditioning systems are installed, and the variable air volume air conditioning system is widely applied to commercial buildings, public facilities, industry, hospitals and the like.

In the application of the prior flow measurement and control device, a linear pressure-independent Venturi valve can provide corresponding flow feedback signals according to the position of the valve, but the valve body is longer, occupies indoor space and is inconvenient to install, meanwhile, under the condition of low flow rate measurement, the precision still does not reach +/-5 percent, meanwhile, the cost is very high and is nearly 50 percent higher than that of a butterfly valve, the corrosion resistance is poorer, meanwhile, the application fatigue problem of an internal structure containing a spring is caused, the deviation is easy, the frequent calibration is needed, the other type is a variable air volume butterfly valve, such as a variable air volume valve of a TROX manufacturer for professionally producing an air conditioner terminal device, but the variable air volume butterfly valve has the defects of very large size, the measurement precision is lower, especially, the low flow rate cannot be accurately measured, the measurement range is narrow, meanwhile, the variable air volume butterfly valve belongs to a pressure-related type, and the precision can be reduced to nearly 20 percent when the pressure of a pipeline fluctuates, the method causes inaccurate measurement and has strict requirements on installation, and the front and the rear of the requirement are required to be provided with straight pipe sections which are close to 3-5D, so the air valve flowmeter is proposed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of low measurement accuracy and limited application range of a variable air volume butterfly valve in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

blast gate flowmeter, including the valve body, the left side and the right side of valve body all are provided with the opening, the top fixed mounting of valve body has the executor, the transmission is connected with the transmission shaft subassembly on the executor output shaft, the bottom of transmission shaft subassembly extends to the inside and the fixed mounting of valve body and has the transmission shaft, and the bottom fixed mounting of transmission shaft has square pipe, the left side and the right side of square pipe fixed mounting respectively have left valve dish and right valve dish, fixed mounting has torque sensor on the transmission shaft.

Preferably, the top of the valve body is fixedly provided with a controller, the controller is electrically connected with the actuator, and the controller is integrated with a microprocessor, an amplifier, a temperature compensator and an analog-to-digital converter.

Preferably, the right side of the right valve disc is fixedly provided with three reinforcing ribs, and the three reinforcing ribs are longitudinally arranged.

The utility model has the beneficial effects that: the valve disc is divided into a left valve disc and a right valve disc, an eccentric structure is adopted, and the stress of the transmission shaft is easily adjusted by adjusting the sizes of the left valve disc and the right valve disc, so that the valve disc is suitable for sensors with different precision requirements and meets the precision required by an air valve flowmeter;

the right valve disc is provided with the transverse reinforcing ribs, so that the right valve disc can be thinner under the condition of meeting the strength, and the weight reduction is facilitated;

when the valve disc is used as a flowmeter, the requirement of setting smaller torque can be realized, namely, smaller pressure drops at the front end and the rear end of the valve disc are realized, and the low resistance and the high efficiency of the flowmeter are realized.

Drawings

FIG. 1 is a perspective view of a portion of the structure of a damper flow meter according to the present invention;

FIG. 2 is a schematic front view of an air valve flow meter according to the present invention;

FIG. 3 is a schematic side view of a damper flow meter according to the present invention;

fig. 4 is a schematic top view of the damper flowmeter according to the present invention.

In the figure: the valve comprises a valve body 1, an actuator 2, a transmission shaft assembly 3, a transmission shaft 4, a square tube 5, a torque sensor 6, a right valve disc 7, a reinforcing rib 8, a controller 9 and a left valve disc 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

Referring to fig. 1-4, the blast gate flowmeter, including valve body 1, the left side and the right side of valve body 1 all are provided with the opening, the top fixed mounting of valve body 1 has executor 2, the transmission is connected with transmission shaft assembly 3 on the 2 output shafts of executor, the bottom of transmission shaft assembly 3 extends to the inside of valve body 1 and fixed mounting has transmission shaft 4, and the bottom fixed mounting of transmission shaft 4 has square pipe 5, the left side and the right side of square pipe 5 fixed mounting have left valve disc 10 and right valve disc 7 respectively, fixed mounting has torque sensor 6 on the transmission shaft 4, the top fixed mounting of valve body 1 has controller 9, and

controller

9 and 2 electric connection of executor, the integration has microprocessor on the controller 9, the amplifier, temperature compensator and adc.

Example two

The following further improvements are made on the basis of the first embodiment:

in the utility model, the right side of the right valve disk 7 is fixedly provided with three reinforcing ribs 8, and the three reinforcing ribs 8 are longitudinally arranged.

In the utility model, the output shaft of the actuator 2 is connected with the transmission shaft assembly through a gear set, the actuator 2 can be a driving motor, when in use, the resistance strain gauges on the torque sensor 6 form a Wheatstone bridge, when no fluid flows, the bridge keeps balance, the output signal is zero, when fluid flows, fluid power acts on the left valve disc 10 and the right valve disc 7, so that the left valve disc 10 and the right valve disc 7 are stressed, the stress of the left valve disc 10 and the right valve disc 7 is transmitted to the resistance strain gauge in the torque sensor 6 through the transmission shaft 4, the force is converted into an electric signal through the bridge formed by the strain gauges, the process of converting the force into the electric signal is completed in the process, the electric signal can be transmitted to an amplifier on the controller 9 for amplification, temperature compensation, linearization processing and A/D conversion and then enters a microprocessor for operation processing, an LED display is arranged at the upper end of the flowmeter, the instantaneous flow value can be displayed, meanwhile, an output voltage signal is uploaded to an upper computer for comparison, a preset value and a measurement feedback value are uninterruptedly compared by using a PID algorithm, the opening of the valve disc is adjusted by the actuator to reach the size of the preset value through continuous adjustment, the valve body 1 is small, the occupied space is small, the installation is convenient and fast, the measurement precision is high, the application range is expanded, and the using effect is good.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. Blast gate flowmeter, including valve body (1), the left side and the right side of valve body (1) all are provided with the opening, its characterized in that, the top fixed mounting of valve body (1) has executor (2), the transmission shaft subassembly (3) of transmission connection on executor (2) output shaft, the bottom of transmission shaft subassembly (3) extends to the inside and fixed mounting of valve body (1) has transmission shaft (4), and the bottom fixed mounting of transmission shaft (4) has square pipe (5), the left side and the right side of square pipe (5) are fixed mounting respectively has left valve disc (10) and right valve disc (7), fixed mounting has torque sensor (6) on transmission shaft (4).

2. The blast gate flowmeter according to claim 1, characterized in that a controller (9) is fixedly mounted on the top of the valve body (1), the controller (9) is electrically connected with the actuator (2), and a microprocessor, an amplifier, a temperature compensator and an analog-to-digital converter are integrated on the controller (9).

3. The blast gate flowmeter according to claim 1, wherein the right side of the right valve disc (7) is fixedly provided with three reinforcing ribs (8), and the three reinforcing ribs (8) are arranged in the longitudinal direction.