CN210923631U

CN210923631U - Gas detection transmitter with function of controlling gas flow velocity

Info

Publication number: CN210923631U
Application number: CN201921833529.6U
Authority: CN
Inventors: 陆庆荣
Original assignee: Nanjing Baishi Safety Equipment Co ltd
Current assignee: Nanjing Baishi Safety Equipment Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-07-03
Anticipated expiration: 2029-10-29

Abstract

The utility model relates to a gas detection transmitter with the function of controlling the gas flow velocity, which comprises a shell, wherein the shell is in a sealed hollow disc structure, both sides of the shell are respectively provided with an air inlet and an air outlet, the surface of the shell is uniformly distributed with a plurality of alarm lamps, and the central position of the shell is embedded into a display; a flow control device is arranged in the shell; the flow control device consists of a power supply, a controller, a protection circuit, a telescopic rod and a sensor, and current sequentially passes through the controller, the display, the protection circuit, the telescopic rod and the sensor; the telescopic rod comprises a screw rod in linkage connection with the servo motor and a nut which is sleeved on the screw rod and can rotate back and forth along the screw rod; the thickness of the shell is matched with that of the flow control device, the inner surface of the shell is provided with a rubber layer, and the bottom end of the flow control device is fixedly arranged at the top in the shell; the utility model discloses flow control device control gas flow detects gas simultaneously, and the sensor is installed at flow control device end, and the accuracy improves greatly.

Description

Gas detection transmitter with function of controlling gas flow velocity

Technical Field

The utility model relates to a gaseous detection area, more specifically say and relate to a gaseous detection changer with control gas velocity of flow function.

Background

With the rapid development of industry, the occasions where human beings contact harmful gases are more and more, so that the harm to the human beings is more and more, and the poisoning accident once and again makes people consciously realize the importance of protecting the safety of the human beings while developing the industry. Therefore, various harmful gas alarm devices gradually become essential protection equipment in industrial safety production. The sensor part of the existing gas detection transmitter adopts an explosion-proof design. According to the relevant safety standard of the explosion-proof field, the cover is strictly opened under the condition of no charge. However, because the sensors have a service life, the sensors need to be replaced periodically, and if the sensors are replaced, the meters need to be powered off first. The on-site instruments are mostly connected in parallel with power supplies, and when any one instrument is powered off, other instruments in the loop can be powered off at the same time, so that danger monitoring is stopped. Therefore, the instrument with the explosion-proof design is complicated in field sensor replacement, time-consuming, labor-consuming and inconvenient.

And the existing gas detection transmitter is mainly controlled and adjusted by an electromagnetic valve, and the gas flowing through the valve body in specific application has complex components, and some gas samples have corrosiveness and impurities. The long-time application of the electromagnetic valve can cause the phenomenon of pipeline blockage and damage to influence the normal use.

SUMMERY OF THE UTILITY MODEL

1. The purpose of the utility model

The utility model discloses an overcome prior art's weak point, reach the gaseous steady state and the density change under different pressures of real-time detection through controlling the gas flow rate with the changer.

2. The technical proposal adopted by the utility model

A gas detection transmitter with a function of controlling gas flow velocity comprises a shell, wherein the shell is of a sealed hollow disc structure, both sides of the shell are respectively provided with a gas inlet and a gas outlet, the surface of the shell is uniformly distributed with a plurality of alarm lamps, and a display is embedded in the center of the shell; a flow control device is arranged in the shell; the flow control device consists of a power supply, a controller, a protection circuit, a telescopic rod and a sensor, and current sequentially passes through the controller, the display, the protection circuit, the telescopic rod and the sensor; the telescopic rod comprises a screw rod in linkage connection with the servo motor and a nut which is sleeved on the screw rod and can rotate back and forth along the screw rod; the casing thickness and flow control device phase-match, and the casing internal surface is equipped with the rubber cortex, and flow control device bottom fixed mounting is top in the casing.

Furthermore, the telescopic rod further comprises a connecting sleeve, a bearing, a tail buffering leather ring, a stroke pipe, a top pipe, a head buffering leather ring, a piston, a front end cover and a mounting screw, wherein the connecting sleeve is respectively positioned at the upper end and the lower end of one side, facing the telescopic rod, of the output shaft of the servo motor; the screw rod is positioned in the top pipe, the head buffering leather ring is positioned at the other end, facing the output shaft, of the screw rod, and the sensor is installed at the tail end of the installation screw.

Further, the warning light is electrically connected to the controller.

Furthermore, the controller adopts a TH08QB2000 single-channel gas detection controller, the protection circuit adopts an intrinsic safety circuit with IIC grade, and the display adopts a display 4.3' backlight touch screen.

Furthermore, the edge of the shell is also provided with symmetrical fixed angles.

Furthermore, the thickness of the shell is matched with that of the flow control device, and a rubber skin layer is arranged on the inner surface of the shell.

3. The beneficial effects of the utility model

(1) The utility model adopts the intrinsic safety design at the flow control device, so that the ignition conditions caused by electric sparks, high temperature and the like can not be generated on site under any conditions, the conditions of fire and the like caused by the transmitter can be prevented, and finally, the instrument can be directly replaced by hot plugging when the sensor module is replaced on site, thereby being convenient and fast;

(2) the utility model discloses the flow control device control gas flow detects gas simultaneously, and the sensor is installed at flow control device end, and the accuracy improves greatly;

(3) the utility model discloses a controller control telescopic link is flexible to reach control gas velocity of flow effect, simple structure is reasonable easily promotes reduce cost.

Drawings

FIG. 1 is a schematic view of the outer surface of the housing of the present invention;

FIG. 2 is a schematic view of the inside of the housing of the present invention;

FIG. 3 is a schematic front end view of the flow control device of the present invention;

FIG. 4 is a rear end schematic view of the flow control device of the present invention;

fig. 5 is a circuit diagram of the protection circuit of the utility model.

The device comprises a shell 1, an air inlet 2, an air outlet 3, an alarm lamp 4, a display 5, a controller 6, a protection circuit 7, an expansion link 8, a sensor 9, a servo motor 10, a screw rod 11, a nut 12, a connecting sleeve 13, a bearing 14, a buffering leather collar 15 at the tail part, a stroke pipe 16, a jacking pipe 17, a buffering leather collar 18 at the head part, a piston 19, a front end cover 20, a rubber leather layer 21 and a flow control device 22.

Detailed Description

In order to make the technical spirit and advantages of the present invention more clearly understandable to examiners of the patent office and especially to the public, the applicant shall make the following detailed description by way of example, but the description of the example is not a limitation to the solution of the present invention, and any equivalent changes made according to the inventive concept, which are merely formal and immaterial, shall be regarded as the technical scope of the present invention.

Example 1

As shown in fig. 1, the utility model discloses a gas detection transmitter with function of controlling gas flow rate, which comprises a shell 1, wherein the shell 1 is a sealed hollow disc structure, both sides of the shell are respectively provided with an air inlet 2 and an air outlet 3, the surface of the shell 1 is uniformly distributed with a plurality of alarm lamps 4, and a display 5 is embedded in the center position; a flow control device 22 is arranged inside the shell 1; as shown in fig. 2, the flow control device 22 is composed of a power supply, a controller 6, a protection circuit 7, a telescopic rod 8 and a sensor 9, wherein the power supply can be selected to be internally provided with a battery or be externally connected with the battery, and current passes through the controller 6, the display 5, the protection circuit 7, the telescopic rod 8 and the sensor 9 in sequence; the telescopic rod 8 comprises a screw rod 11 in linkage connection with the servo motor 10 and a nut 12 which is sleeved on the screw rod 11 and can rotate back and forth along the screw rod; the servo motor 10 can convert the voltage signal into torque and rotating speed to drive and control the telescopic rod 8 to stretch, so that the controller can control conveniently and the control flow of the controller is simplified; the thickness of the shell 1 is matched with the flow control device 22, the inner surface of the shell 1 is provided with a rubber skin layer 21, and the bottom end of the flow control device 22 is fixedly installed at the top in the shell 1. As shown in fig. 3-4, the telescopic rod 8 further includes a connecting sleeve 13, a bearing 14, a tail buffering leather collar 15, a stroke pipe 16, a top pipe 17, a head buffering leather collar 18, a piston 19, a front end cover 20 and a mounting screw, the connecting sleeve 13 is respectively located at the upper end and the lower end of one side of the output shaft of the servo motor 10 facing the telescopic rod 8, the bearing 14 is located at one end of the telescopic rod facing the output shaft of the servo motor, the tail buffering leather collar 18 is located at the front end of the bearing, the top pipe 17 is located inside the stroke pipe, the piston 19 is located at the other end of the head buffering leather collar facing the output shaft, the front end cover 20 is located at the other end of the stroke pipe facing the output shaft, and the mounting screw is located at the other; the screw rod 11 is positioned in the top pipe, the head buffering leather ring 18 is positioned at the other end, facing the output shaft, of the screw rod 11, and the sensor 9 is installed at the tail end of the installation screw.

The during operation, it is gaseous through 1 inflow casing 1 of air inlet, it is gaseous from the gas outlet outflow after the sensor to change the flow direction through flow control device, flow control device controls the gas flow rate through 6 control telescopic links lengths of controller, and after sensor detection gas composition and concentration, give controller 6 through the signal of telecommunication passback, and present through display 5, after the concentration change appears in gas, when concentration surpassed or is less than 6 predetermined concentration ranges of controller, controller 6 lights through signal of telecommunication control warning light 4, reach the warning effect.

Example 2

As shown in fig. 1, the utility model discloses a gas detection transmitter with function of controlling gas flow rate, which comprises a shell 1, wherein the shell 1 is a sealed hollow disc structure, both sides of the shell are respectively provided with an air inlet 2 and an air outlet 3, the surface of the shell 1 is uniformly distributed with a plurality of alarm lamps 4, and a display 5 is embedded in the center position; as shown in fig. 2, a flow control device 22 is installed inside the housing 1; the flow control device 22 is composed of a power supply, a controller 6, a protection circuit 7, a telescopic rod 8 and a sensor 9, wherein the power supply can be internally provided with a battery or an external power supply, and current sequentially passes through the controller 6, the display 5, the protection circuit 7, the telescopic rod 8 and the sensor 9; as shown in fig. 3-4, the telescopic rod 8 includes a screw rod 11 linked with the servo motor 10 and a nut 12 sleeved on the screw rod 11 and capable of rotating back and forth along the screw rod; the thickness of the shell 1 is matched with the flow control device 22, the inner surface of the shell 1 is provided with a rubber skin layer 21, and the bottom end of the flow control device 22 is fixedly installed at the top in the shell 1.

As shown in fig. 5, the warning lamp 4 is electrically connected with the controller 6, the controller 6 adopts the TH08QB2000 single-channel gas detection controller 6, and the protection circuit 7 adopts the intrinsic safety circuit of IIC grade, the utility model discloses a spark discharge energy and heat energy of limiting the various parameters of electrical equipment circuit or taking the protective measures to limit the circuit make its electric spark and the heat effect that produces under normal work and prescribed fault condition can not ignite the explosive mixture of surrounding environment, thereby realize the electrical explosion-proof. The display 5 employs a display4.3 "backlit touch screen.

The edge of the shell 1 is also provided with symmetrical fixed angles. The thickness of the shell 1 is matched with the flow control device, and the inner surface of the shell 1 is provided with a rubber skin layer 21.

Claims

1. A gas detection transmitter with a function of controlling a flow rate of gas, characterized in that: the alarm lamp comprises a shell, wherein the shell is of a sealed hollow disc structure, the two sides of the shell are respectively provided with an air inlet and an air outlet, the surface of the shell is uniformly distributed with a plurality of alarm lamps, and a display is embedded in the center of the shell; a flow control device is arranged in the shell; the flow control device consists of a power supply, a controller, a protection circuit, a telescopic rod and a sensor, and current sequentially passes through the controller, the display, the protection circuit, the telescopic rod and the sensor; the telescopic rod comprises a screw rod in linkage connection with the servo motor and a nut which is sleeved on the screw rod and can rotate back and forth along the screw rod; the casing thickness and flow control device phase-match, and the casing internal surface is equipped with the rubber cortex, and flow control device bottom fixed mounting is top in the casing.

2. The gas detection transmitter with a function of controlling a flow rate of gas according to claim 1, wherein: the telescopic rod further comprises a connecting sleeve, a bearing, a tail buffering leather ring, a stroke pipe, a top pipe, a head buffering leather ring, a piston, a front end cover and a mounting screw, wherein the connecting sleeve is respectively positioned at the upper end and the lower end of one side, facing the telescopic rod, of the output shaft of the servo motor; the screw rod is positioned in the top pipe, the head buffering leather ring is positioned at the other end, facing the output shaft, of the screw rod, and the sensor is installed at the tail end of the installation screw.

3. The gas detection transmitter with a function of controlling a flow rate of gas according to claim 1, wherein: the warning light is electrically connected with the controller.

4. The gas detection transmitter with a function of controlling a flow rate of gas according to claim 1, wherein: the controller adopts TH08QB2000 single-channel gas detection controller, and protection circuit adopts the ann's circuit of IIC grade, and the display adopts display4.3 "backlight touch-sensitive screen.

5. The gas detection transmitter with a function of controlling a flow rate of gas according to claim 1, wherein: the edge of the shell is also provided with symmetrical fixed angles.

6. The gas detection transmitter with a function of controlling a flow rate of gas according to claim 1, wherein: the shell thickness and the flow control device are matched, and a rubber skin layer is arranged on the inner surface of the shell.