CN103808471B - Intelligent check meter for respirator - Google Patents

Abstract

The invention discloses an intelligent calibrator for a respirator, which includes an inflatable and deflated part for inflating or pumping the respirator, and is used for testing the airtightness of the respirator, exhaust pressure, quantitative oxygen supply flow rate, and large flow rate. And the detection part of at least one parameter in the self-supplementary pressure and the control part used to control the working state of the inflation and deflation part and process and display the detection information of the detection part. The inflation and deflation part includes an automatic air supply device, an inflation and deflation pipe And the inflation and deflation switching assembly connected between the inflation and deflation pipe and the air inlet and outlet of the automatic air supply device, the intelligent calibrator for the respirator of the present invention can automatically perform air tightness detection, exhaust pressure detection, Self-complementing pressure detection and quantitative oxygen supply flow detection, and the detection results are intuitively displayed on the display module, which has the advantages of simple operation and high calibration efficiency.

Description

Intelligent calibrator for respirator

technical field

The invention relates to a respirator calibrator, in particular to an intelligent calibrator for a respirator.

Background technique

Respirators are widely used in coal mines, firefighting, chemical industry, petroleum and other safety fields, enabling firefighters or emergency rescue personnel to safely carry out fire fighting, emergency rescue and rescue work in harsh environments full of dense smoke, poisonous gas, steam or lack of oxygen. The performance of the respirator is directly related to the safety of the ambulance personnel, so the respirator must be inspected, maintained and calibrated regularly during the use of the equipment to ensure that it is in good use. The existing calibrator for respirators has a low degree of automation and can only realize automatic gas supply. It is necessary to manually adjust the calibrator to test different performance parameters of the respirator. The calibration efficiency is low and the operation is cumbersome.

Therefore, in order to solve the above problems, there is a need for an intelligent calibration for respirators with a high degree of automation, which can automatically perform air tightness detection, exhaust pressure detection, self-complementary pressure detection, quantitative oxygen supply flow detection and large flow detection. instrument.

Contents of the invention

In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a respirator that can automatically perform air tightness detection, exhaust pressure detection, self-supplementary pressure detection, quantitative oxygen supply flow detection and large flow detection. Smart calibrator for respirators.

The intelligent calibrator for the inhaler of the present invention includes an inflation and deflation part for inflating or pumping the respirator, and is used for testing the air tightness of the respirator, exhaust pressure, quantitative oxygen supply flow rate, large flow rate and self-replenishment The detection part of at least one parameter in the pressure and the control part used to control the working state of the inflation and deflation part and process and display the detection information of the detection part. The inflation and deflation switch assembly between the inflation and deflation pipe and the air inlet and outlet of the automatic air supply device;

Further, the charging and discharging switching assembly includes an inlet pipe I, an outlet pipe I and four normally closed two-position two-way solenoid valves I, and the inlet pipe I, the outlet pipe I and the charging and discharging pipe I are all three-way pipes. The first pipeline of the air pipe I is connected to the air inlet of the automatic air supply device, and the second pipeline of the air inlet pipe I is connected to the first pipeline of the inflation and discharge pipe I through a normally closed two-position two-way solenoid valve I. The third pipeline of the air inlet pipe I is connected to the outside world through a normally closed two-position two-way solenoid valve I, the first pipeline of the air outlet pipe I is connected to the air outlet of the automatic air supply device, and the second pipeline of the air outlet pipe I is connected to the outside world. It is connected to the second pipeline of the charging and discharging pipe I through a normally closed two-position two-way solenoid valve I, and the third pipeline of the air outlet pipe I is connected to the outside world through a normally closed two-position two-way solenoid valve I. The third pipeline of the trachea I is used to communicate with the detection gas port of the respirator;

Further, the detection part includes a detection air pipe, a pressure sensor, a flow sensor I, a normally closed two-position two-way solenoid valve II and a normally open two-position two-way solenoid valve I, the detection air pipe is a three-way pipe, and the flow sensor I is set On the first pipeline of the detection air pipe, it is used to detect the gas flow signal in the pipeline and generate the corresponding flow electrical signal. The second pipeline and the third pipeline of the detection gas pipe are used to control the on-off of the corresponding pipeline, and the pressure sensor is installed on the third pipeline of the detection gas pipe to detect the gas pressure in the pipeline and generate corresponding pressure electrical signals, The pressure sensor is set close to the outer end of the third pipeline relative to the normally closed two-position two-way solenoid valve II on the third pipeline;

Further, the detection part also includes a large-flow detection tube that can be connected to the respirator detection port and the outside world, and the large-flow detection tube is equipped with a flow sensor II that detects the gas flow signal in the pipeline and generates a corresponding flow electrical signal;

Further, the intelligent calibrator for the respirator also includes an automatic jacking block for controlling the on-off of the exhaust valve of the respirator, and the automatic jacking block is automatically ejected and retracted under the control of the control part;

Further, the charging and deflation switching assembly also includes a normally open two-position two-way solenoid valve II; the normally open two-position two-way solenoid valve II is provided in the third pipeline of the inflation and deflation pipe to control the flow of the pipeline. on-off;

Further, the control part includes a controller and a power module connected to the signal output terminal of the controller, a battery module and a display module. Two-position two-way solenoid valve Ⅰ, normally open two-position two-way solenoid valve I, normally open two-position two-way solenoid valve II and normally closed two-position two-way solenoid valve II are used to control normally closed two-position two-way Solenoid valve Ⅰ, normally open 2-position 2-way solenoid valve Ⅰ, normally open 2-position 2-way solenoid valve Ⅱ and normally closed 2-position 2-way solenoid valve Ⅱ perform corresponding actions, pressure sensor, flow sensor Ⅰ and flow sensor Ⅱ Connected to the signal input terminal of the controller to send the corresponding flow electrical signal and pressure electrical signal to the controller, the controller processes the flow electrical signal and pressure electrical signal and then sends a display signal to the display module to compare the measured Visual display of flow and pressure;

Further, the intelligent calibrator for the respirator also includes a manual air supply system for manually inflating and pumping the respirator. The four-way reversing valve, the manual two-position three-way valve set on the third pipeline of the charging and deflation pipe I for switching the automatic and manual inflation and deflation modes, is connected to the manual two-position four-way reversing valve and the manual two-position The charging and discharging pipe II between the three-way valves, the manual two-position two-way valve set on the charging and discharging pipe II for controlling the on-off of the pipeline, and the two-position four-way reversing valve connected to the manual air supply device The air inlet pipe II and the air outlet pipe II, and the manual air supply system also includes a manual top block for manually controlling the opening and closing of the respirator exhaust valve;

Further, the manual air supply device includes an air bag, the air bag is provided with an air inlet and an air outlet, the air inlet of the air bag is connected to the air outlet pipe II, the air outlet of the air bag is connected to the air inlet pipe II, and the manual air supply device also includes a Two one-way valves for the air inlet and outlet of the airbag.

The beneficial effects of the present invention are: the intelligent calibration instrument for respirators of the present invention can automatically perform air tightness detection, exhaust pressure detection, quantitative oxygen supply flow detection, large flow detection and self-supplementary pressure detection on respirators, and the detection results It is visually displayed on the display module. Compared with the existing respirator calibrator, which can only realize automatic gas supply, the calibrator needs to be manually adjusted to test different performance parameters of the respirator. The intelligent respirator calibrator of the present invention has the advantages of easy operation , the advantages of high calibration efficiency.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

Fig. 1 is a schematic structural view of the present invention, as shown in the figure, the intelligent calibrator for the respirator in this embodiment includes an inflation and deflation part for inflating or pumping the respirator, and is used to detect the airtightness of the respirator. The detection part of at least one parameter of performance, exhaust pressure, quantitative oxygen supply flow, large flow and self-supplementary pressure, and the control part used to control the working state of the inflation and deflation part and process and display the detection information of the detection part, The inflation and deflation part includes the automatic air supply device 1, the inflation and deflation pipe I5, and the inflation and deflation switch assembly connected between the inflation and deflation pipe I5 and the air inlet and outlet ends of the automatic air supply device 1. The automatic air supply device 1 has The airflow conveying equipment at the air inlet and air outlet allows the airflow to flow in from the air inlet and flow out from the air outlet.

In this embodiment, the inflation and deflation switching assembly includes an inlet pipe I2, an outlet pipe I3 and four normally closed two-position two-way solenoid valves I4, and the inlet pipe I2, the outlet pipe I3 and the inflation and discharge pipe I5 are all three-way The first pipeline of the air intake pipe I2 is connected to the air inlet of the automatic air supply device 1, and the second pipeline of the air intake pipe I2 is connected to the first pipeline of the charging and discharging pipe I5 through a normally closed two-position two-way solenoid valve I4 One pipeline, the third pipeline of the intake pipe I2 is connected to the outside world through a normally closed two-position two-way solenoid valve I4, the first pipeline of the air outlet pipe I3 is connected to the air outlet of the automatic air supply device 1, and the air outlet pipe I3 The second pipeline of the gas outlet pipe I3 is connected to the second pipeline of the charging and discharging pipe I5 through a normally closed two-position two-way solenoid valve I4, and the third pipeline of the outlet pipe I3 is connected through a normally closed two-position two-way solenoid valve I4 To the outside world, the third pipeline of the inflation and discharge tube I5 is used to communicate with the detection port 9 of the respirator. When testing the air tightness and exhaust pressure of the respirator, it is necessary to inflate the detection port 9. When the respirator When performing self-supplementary pressure detection, the detection gas port 9 needs to be pumped. By controlling the on-off of the normally closed two-position two-way solenoid valve I4, the switch between inflating and pumping the detection gas port 9 can be realized.

In this embodiment, the detection part includes a detection air pipe 17, a pressure sensor 15, a flow sensor I18, a normally closed two-position two-way solenoid valve II16 and a normally open two-position two-way solenoid valve I8, and the detection air pipe 17 is a three-way The flow sensor I18 is set on the first pipeline of the detection gas pipe 17 to detect the gas flow signal in the pipeline and generate a corresponding flow electrical signal. The normally open two-position two-way solenoid valve I8 and the normally closed two-position two-way The solenoid valve II16 is sequentially installed on the second pipeline and the third pipeline of the detection air pipe 17 to control the on-off of the corresponding pipelines, and the pressure sensor 15 is installed on the third pipeline of the detection air pipe 17 to detect the internal pressure of the pipeline. The pressure sensor 15 is set close to the outer end of the third pipeline relative to the normally closed two-position two-way solenoid valve II16 on the third pipeline. When the calibrator is airtight for the ventilator During the performance test, exhaust pressure test and self-complementary pressure test, the normally closed two-position two-way solenoid valve Ⅱ16 is powered off and closed, and at the same time the normally open two-position two-way solenoid valve I8 is powered on and closed. When the respirator performs quantitative oxygen supply flow detection, the normally closed two-position two-way solenoid valve II16 is powered on and opened, and at the same time the normally open two-position two-way solenoid valve I8 is powered off and opened.

In this embodiment, the detection part also includes a large-flow detection tube connecting the detection port of the respirator with the outside world. The large-flow detection tube is equipped with a flow rate sensor that detects the gas flow signal in the pipeline and generates a corresponding flow electrical signal. The sensor II 25 and the large flow detection tube are connected to the respirator detection gas port only when the manual or self-supplemented flow needs to be measured, and are usually not connected.

In this embodiment, the intelligent calibrator for the respirator also includes an automatic jack block 14 for controlling the on-off of the exhaust valve of the respirator, and the automatic jack block 14 is automatically ejected and retracted by the control part. When testing the airtightness of the respirator, the automatic top block 14 can be ejected to ensure that the exhaust valve of the respirator is not opened. Back to ensure that the respirator exhaust valve can be opened normally.

In this embodiment, the charging and deflation switching assembly further includes a normally open two-position two-way solenoid valve II7, and the normally open two-position two-way solenoid valve II7 is provided in the third pipeline of the inflation and deflation pipe I5 for Control the on-off of the pipeline. When the respirator uses an intelligent calibrator to test the air-tightness of the respirator, after the inflation and deflation part has inflated the detection port 9, the normally open two-position two-way solenoid valve II7 needs to be energized. Close to avoid gas leakage.

In this embodiment, the control part includes a controller 13 and a power module 11 connected to the signal output end of the controller, a battery module 10 and a display module 12, and the power module 10 is used for performing voltage transformation and AC-DC conversion on alternating current, The controller 13 is connected to the normally closed two-position two-way solenoid valve I4, the normally open two-position two-way solenoid valve I8, the normally open two-position two-way solenoid valve II7 and the normally closed two-position two-way solenoid valve II16 for Control normally closed 2-position 2-way solenoid valve Ⅰ4, normally open 2-position 2-way solenoid valve Ⅰ8, normally open 2-position 2-way solenoid valve Ⅱ7 and normally closed 2-position 2-way solenoid valve Ⅱ16 to perform corresponding actions, pressure The sensor 15 and the flow sensor 18 are connected to the signal input end of the controller 13 for sending the corresponding flow electrical signal and pressure electrical signal to the controller 13, and the controller 13 processes the flow electrical signal and the pressure electrical signal to the display module 12 Send a display signal to visually display the measured flow and pressure. When the respirator uses an intelligent calibrator to test the air tightness, exhaust pressure, flow and self-supplementary pressure of the respirator, the calibrator can directly use 220V AC power supply, the power supply module 11 transforms AC power and converts AC to DC to supply power to the controller 13, and the controller 13 automatically controls the opening and closing of each solenoid valve, thereby realizing automatic detection of the above parameters. In some cases, the battery module 10 supplies power to each sensor, controller, and display module.

In this embodiment, the intelligent calibration instrument for respirators also includes a manual air supply system for manually inflating and pumping the respirator. Manual two-position four-way reversing valve 20, a manual two-position three-way valve 6 set on the third pipeline of the inflation and deflation pipe I5 for switching between automatic and manual inflation and deflation modes, connected to the manual two-position four-way reversing valve The inflation and discharge pipe II19 between the valve 20 and the manual two-position three-way valve 6, the manual two-position two-way valve 21 set on the inflation pipe II19 to control the on-off of the pipeline, and the two-position four-way reversing valve connected to the two-position four-way The inlet pipe II22 and outlet pipe II23 between the valve 20 and the manual air supply device, when there is no external power supply, the manual air supply system can be used to manually inflate or pump the respirator to complete the detection of various performance parameters of the respirator , when performing manual air supply, the manual two-position three-way valve 6 needs to be switched to the manual inflation and deflation mode, and at the same time, the manual two-position four-way reversing valve 20 is used to switch between inflating and pumping the respirator. The air supply system also includes a manual top block (not shown in the figure) for manually controlling the on-off of the respirator exhaust valve. When the calibrator performs manual air tightness testing on the respirator, manually put the manual top block The corresponding position of the calibrator ensures that the exhaust valve is not opened, and the manual top block can be directly removed for other parameter detection.

In this embodiment, the manual air supply device includes an air bag 24, the air bag is provided with an air inlet and an air outlet, the air inlet of the air bag is connected to the air outlet pipe II23, the air outlet of the air bag is connected to the air inlet pipe II22, and the manual air supply device It also includes two one-way valves located at the air inlet and air outlet of the airbag 24. When the respirator is manually detected, the respirator can be inflated or pumped only by repeatedly squeezing the airbag 24 by hand.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (8)

1. a respirator intelligent checking instrument, is characterized in that: comprise for the inflation/deflation part of respirator being inflated and bleed, for detect at least one parameter in respirator impermeability, discharge pressure, quantitatively oxygen flow, large discharge and self-complementary pressure detecting portion and for controlling inflation/deflation some work state and processing and the control section shown the Detection Information of detecting portion; Described inflation/deflation part comprises automatic inflating-air device, charge and discharge tracheae I and is communicated in the inflation/deflation changeover module between charge and discharge tracheae I and automatic inflating-air device inlet end and outlet side; Described inflation/deflation changeover module comprises draft tube I, escape pipe I and four normal close two-position two-way solenoids I; Described draft tube I, escape pipe I and charge and discharge tracheae I are three-way pipe; First pipeline connection of described draft tube I is in the air intake opening of automatic inflating-air device, second pipeline of draft tube I is communicated in the first pipeline of charge and discharge tracheae I by a normal close two-position two-way solenoid I, the 3rd pipeline of draft tube I is communicated in the external world by a normal close two-position two-way solenoid I; First pipeline connection of described escape pipe I is in the gas outlet of automatic inflating-air device, second pipeline of escape pipe I is communicated in the second pipeline of charge and discharge tracheae I by a normal close two-position two-way solenoid I, the 3rd pipeline of escape pipe I is communicated in the external world by a normal close two-position two-way solenoid I; 3rd pipeline of described charge and discharge tracheae I is for being communicated in the detection gas port of respirator.

2. respirator intelligent checking instrument according to claim 1, is characterized in that: described respirator intelligent checking instrument also comprises the automatic jacking block for controlling respirator vent valve break-make; Described automatic jacking block controls automatic ejection and retraction by described control section.

3. respirator intelligent checking instrument according to claim 2, is characterized in that: described detecting portion comprises detection tracheae, pressure transducer, flow sensor I, normal close two-position two-way solenoid II and two-position two-way solenoid valve open in usual I; Described detection tracheae is three-way pipe; Described flow sensor I be located at detect tracheae the first pipeline on for detecting gas flow signals in this pipeline and producing corresponding flow electric signal; Described two-position two-way solenoid valve open in usual I and normal close two-position two-way solenoid II be located at successively detect tracheae the second pipeline and the 3rd pipeline on for controlling the break-make of respective line; Described pressure transducer be located at detect tracheae the 3rd pipeline on for detecting gaseous tension in this pipeline and producing corresponding electric pressure signal, pressure transducer relative to the normal close two-position two-way solenoid II on the 3rd pipeline be close to the 3rd pipeline outer end arrange.

4. respirator intelligent checking instrument according to claim 3, it is characterized in that: described detecting portion also comprises can connect the large discharge detector tube that respirator detects gas port and the external world, described large discharge detector tube inside is provided with detects gas flow signals in this pipeline and the flow sensor II producing corresponding flow electric signal.

5. respirator intelligent checking instrument according to claim 4, is characterized in that: described inflation/deflation changeover module also comprises two-position two-way solenoid valve II open in usual; Described two-position two-way solenoid valve open in usual II is located at the 3rd pipeline of charge and discharge tracheae I for controlling the break-make of this pipeline.

6. respirator intelligent checking instrument according to claim 5, is characterized in that: described control section comprises controller and is connected to the power module of described controller signals output terminal, battery module and display module; Described power module is used for carrying out transformation and AC-DC conversion to alternating current; Described controller is electrically connected on normal close two-position two-way solenoid I, two-position two-way solenoid valve open in usual I, two-position two-way solenoid valve open in usual II and normal close two-position two-way solenoid II and carries out corresponding action for controlling normal close two-position two-way solenoid I, two-position two-way solenoid valve open in usual I, two-position two-way solenoid valve open in usual II and normal close two-position two-way solenoid II; Described pressure transducer, flow sensor I and flow sensor II are connected to the signal input part of controller for corresponding flow electric signal and electric pressure signal are sent to controller, and described controller processes backward display module to flow electric signal and electric pressure signal and sends display and intuitively show measured flow and pressure.

7. respirator intelligent checking instrument according to claim 6, is characterized in that: described respirator intelligent checking instrument also comprises for the manual air supply system manually inflated respirator and bleed, described manual air supply system comprises manual feeder, for the manual two-position four way change valve of manual switchover punching venting, be located on described charge and discharge tracheae I the 3rd pipeline for switching the manual two position three-way valve of automatic and manual inflation/deflation pattern, be communicated in the charge and discharge tracheae II between manual two-position four way change valve and manual two position three-way valve, be located on charge and discharge tracheae II for controlling the manual two position two-way valve of this pipeline break-make and the draft tube II be communicated between two-position four way change valve and manual feeder and escape pipe II.

8. respirator intelligent checking instrument according to claim 7, it is characterized in that: described manual feeder comprises air bag, and described air bag is provided with air intake opening and gas outlet, the air intake opening of air bag is communicated in escape pipe II, and the gas outlet of air bag is communicated in draft tube II; Described manual feeder also comprises two retaining valves of air intake opening and the gas outlet being located at air bag.