Alarm for chemical gas leakage of aerosol raw material

Abstract

The invention relates to an aerosol raw material chemical gas leakage alarm, and belongs to the technical field of combustible gas detection, and the alarm comprises a condensation cabin which is used for cooling and liquefying water vapor in a to-be-detected gas flow; the condensation cabin is connected with an air inlet pipeline; the adsorption turntable is respectively connected with the condensation cabin and the gas outlet pipeline; the adsorption turntable is used for adsorbing liquid water; the gas sensor is arranged in the gas outlet pipeline and is used for detecting the content of combustible gas in the gas flow; the heat pump is used for reducing the temperature of the condensation cabin, is connected with the gas sensor and provides heat for the gas sensor; the heating wire sensor is used for detecting airflow humidity. The heat pump comprises a compressor I, a condenser I, a compressor II, a condenser II, an expansion valve and an evaporator which are connected in sequence; the evaporator is arranged on the periphery of the condensation cabin; and the condenser II is arranged in the gas sensor. The method has the effect of reducing moisture interference in the combustible gas detection process.

Description

Technical Field

[0001] The present application relates to the technical field of combustible gas detection, and in particular to an aerosol raw material chemical gas leakage alarm. Background Art

[0002] Aerosols are mainly composed of drugs, additives and propellants. Propellants provide spray power for drugs, allowing them to be sprayed from the container in the form of mist. Propellants are usually flammable gases, such as propane, n-butane, isobutane, etc.

[0003] SnO2 (tin dioxide) semiconductor materials can be used to detect combustible gases; the principle is based on the reaction between gas molecules and oxygen adsorbed on the surface of SnO2. In the air, oxygen molecules adsorb on the surface of SnO2 to form oxygen ions. When SnO2 is exposed to combustible gases, gas molecules and oxygen ions undergo a redox reaction, resulting in a change in the conductivity of SnO2, thereby achieving the detection of combustible gases. This change can be monitored by measuring the change in resistance or voltage.

[0004] In air with high humidity, water vapor molecules will compete with oxygen for the adsorption sites on the surface of SnO2 semiconductor, affecting the detection of combustible gases by SnO2 semiconductor. Summary of the invention

[0005] In order to improve the problem of moisture interfering with combustible gas detection, the present application provides an aerosol raw material chemical gas leakage alarm.

[0006] The present application provides an aerosol raw material chemical gas leakage alarm adopts the following technical solution:

[0007] An aerosol raw material chemical gas leakage alarm, comprising:

[0008] A condensation chamber, used to cool and liquefy water vapor in the airflow to be tested; the condensation chamber is connected to the air intake pipeline;

[0009] An adsorption turntable is connected to the condensation chamber and the air outlet pipeline respectively; the adsorption turntable is used to adsorb liquid water;

[0010] A gas sensor, disposed in the gas outlet pipeline, for detecting the combustible gas content in the gas flow;

[0011] A heat pump, used to reduce the temperature of the condensing chamber and connected to the gas sensor to provide heat for the gas sensor;

[0012] Heating wire sensor, used to detect air flow humidity.

[0013] Optionally, the heat pump includes a compressor 1, a condenser 1, a compressor 2, a condenser 2, an expansion valve and an evaporator connected in sequence; the evaporator is arranged on the periphery of the condensation chamber; and the condenser 2 is arranged in the gas sensor.

[0014] Optionally, the gas sensor comprises: a base;

[0015] A semiconductor layer is coated on the periphery of the base; the semiconductor layer changes its resistance value after contacting with the combustible gas;

[0016] The electrode comprises a ring electrode connected to the base and a lead-out electrode connected to the ring electrode.

[0017] Optionally, the heating wire sensor includes a heating wire and a thermistor connected in parallel.

[0018] Optionally, an adsorption tube is movably arranged on the adsorption turntable; an adsorbent is arranged in the adsorption tube; a water outlet chamber for dehydration and a material replacement turntable for replacing the adsorption tube are respectively arranged on both sides of the adsorption turntable; the adsorption turntable is driven to rotate by motor 1, and the motor 1 is connected to the gas sensor.

[0019] Optionally, the adsorption tube comprises:

[0020] A mesh tube for placing an adsorbent;

[0021] Covers are fixed at both ends of the network tube;

[0022] The sealing plug is slidably connected with the sealing cover; the sealing plug and the sealing cover are provided with air holes which can communicate with each other, and the air holes can be aligned after the sealing plug is moved.

[0023] Optionally, the condenser is arranged on the peripheral side of the water outlet tank; an electromagnet is fixedly provided in the water outlet tank for driving the adsorption tube to move; and a water outlet hole is opened at the bottom of the water outlet tank.

[0024] Optionally, a material changing cavity for accommodating the adsorption tube is provided on the material changing turntable; a second electromagnet is fixedly provided in the material changing cavity for driving the adsorption tube to move; the material changing turntable is connected to a second motor, and the second motor drives the material changing turntable to rotate.

[0025] Optionally, a second contact switch is provided in the material changing chamber, and the second motor is connected to a power source via the second contact switch; after the adsorption tube moves into the material changing chamber, the second contact switch is turned on.

[0026] Optionally, electromagnet three and electromagnet four are fixedly provided at both ends of the adsorption chamber respectively; electromagnet three and electromagnet four can drive the adsorption tube to move; contact switch one is provided on the outer peripheral surface of the adsorption turntable, and electromagnet three and electromagnet four are respectively connected to the power supply through contact switch one.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Through the heat exchange between the evaporator and the condensation chamber, the temperature inside the condensation chamber is lowered to effectively condense water vapor; the airflow contacts the zeolite after passing through the condensation chamber to further remove liquid water in the airflow, thereby reducing the occurrence of water vapor occupying the reaction sites of the semiconductor layer.

[0029] 2. The heating wire sensor is used to detect the humidity of the airflow to be tested. When the humidity increases, the total resistance of the heating wire and the NTC thermistor decreases; at this time, the zeolite in the adsorption tube is saturated with adsorption, and the system can automatically transfer the adsorption tube to the water outlet tank.

[0030] 3. In the heat pump system, in order to make the coolant reach the working temperature of the semiconductor layer, the temperature is raised twice. The gaseous refrigerant is heated and pressurized in compressor one, and then enters condenser one to release some heat; the released heat helps to dehydrate the saturated adsorbent. After that, the refrigerant enters compressor two for secondary compression, further increasing the temperature and pressure, and heat exchange is carried out in the semiconductor layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the aerosol raw material chemical gas leakage alarm of the embodiment of the present application.

[0032] Figure 2 It is a schematic diagram of the structure of the heat pump according to the embodiment of the present application.

[0033] Figure 3 It is a cross-sectional view of the adsorption tube according to the embodiment of the present application.

[0034] Figure 4 It is a schematic diagram of the structure of the material changing turntable in the embodiment of the present application.

[0035] Figure numerals: 1. compressor one; 11. condenser one; 12. compressor two; 13. contact ring; 14. expansion valve; 15. evaporator; 16. condensation chamber; 17. adsorption turntable; 18. air inlet pipeline; 19. air outlet pipeline; 2. semiconductor layer; 21. heating wire sensor; 22. support ring one; 23. motor one; 24. adsorption chamber; 25. adsorption tube; 26. mesh tube; 27. cover; 28. air outlet; 29. ​​plug; 3. air inlet groove; 31. through groove; 32. support plate; 33. reset spring; 34. water outlet chamber; 35. material change turntable; 36. material change chamber; 37. avoidance groove; 38. electromagnet two; 39. support ring two; 4. motor two. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] The embodiment of the present application discloses an aerosol raw material chemical gas leakage alarm. The aerosol raw material gas leakage alarm includes a heat pump and an adsorption detection mechanism. The heat pump includes a compressor 1, a condenser 11, a compressor 2 12, a condenser 2, an expansion valve 14 and an evaporator 15 connected in sequence; the outlet end of the evaporator 15 is connected to the inlet end of the compressor 1.

[0038] Specifically, after the gaseous refrigerant is heated and pressurized by compressor 1, it flows to condenser 11 to release some heat, and then enters compressor 2 12 for secondary compression to further increase the temperature and pressure; then the gaseous refrigerant enters condenser 2 to release heat and condense into liquid. After the liquid refrigerant enters expansion valve 14 to reduce pressure and temperature, it enters evaporator 15 to absorb heat and evaporate into low-temperature and low-pressure gaseous refrigerant. The refrigerant can be a hydrofluoroolefin refrigerant.

[0039] The adsorption detection mechanism includes a condensation chamber 16, an adsorption turntable 17 and a gas sensor connected in sequence. The condensation chamber 16 is connected to the air intake pipe 18. The evaporator 15 is a spiral heat exchanger, and the evaporator 15 is wound around the condensation chamber 16; the condensation chamber 16 is made of a heat conductive material, and a water outlet pipe 1 is fixed at the bottom of the condensation chamber 16. Specifically, the refrigerant exchanges heat with the condensation chamber 16 after passing through the evaporator 15, so that the temperature in the condensation chamber 16 is reduced; the airflow to be measured is cooled after entering the condensation chamber 16, so that the water vapor forms liquid water droplets attached to the wall of the condensation chamber 16, and is finally discharged from the water outlet pipe 1.

[0040] The adsorption turntable 17 is connected to the gas outlet pipeline 19; the gas sensor is fixed in the gas outlet pipeline 19. The gas sensor includes a base and an annular electrode fixed on the base. The base is an alumina ceramic tube, and the circumference of the base is coated with a semiconductor layer 2; the material of the semiconductor layer 2 is nano SnO2. The circumference of the annular electrode is connected to a lead electrode, which penetrates the semiconductor layer 2 and is connected to a wire. Condenser 2 is a spiral radiator, which is penetrated in the alumina ceramic tube and fits with the inner wall of the base to facilitate heat transfer to the semiconductor layer 2 through the base. Specifically, nano SnO2 can be used to detect propellants in the gas flow to be tested. A heating wire sensor 21 is also fixed in the gas outlet pipeline 19.

[0041] The adsorption turntable 17 is rotatably arranged between the condensation chamber 16 and the air outlet pipe 19. A support ring 22 for providing support for the adsorption turntable 17 is arranged on the periphery of the adsorption turntable 17; a motor 23 is fixedly arranged on the support ring 22, and the output shaft of the motor 23 is coaxially connected with the adsorption turntable 17, and is used to drive the adsorption turntable 17 to rotate. Two adsorption chambers 24 are provided on the adsorption turntable 17, and preferably, the two adsorption chambers 24 are symmetrically arranged. An adsorption tube 25 is arranged in the adsorption chamber 24, and the adsorption tube 25 can slide in the adsorption chamber 24. An adsorbent is arranged in the adsorption tube 25, and in this embodiment, the adsorbent is zeolite; zeolite can adsorb moisture and alkanes in the airflow to be measured; the zeolite needs to be replaced after saturation of alkane adsorption, and can be desorbed by heating after saturation of moisture adsorption.

[0042] The adsorption tube 25 is a cylindrical tube; the adsorption tube 25 includes a mesh tube 26 and a cover 27 fixed at both ends of the mesh tube 26; the diameter of the cover 27 is larger than the diameter of the mesh tube 26, so that after the adsorption tube 25 enters the adsorption chamber 24, the cover 27 fits against the inner wall of the adsorption chamber 24; preferably, a rubber ring is provided on the outer peripheral surface of the cover 27 to reduce gas overflow after the adsorption tube 25 enters the adsorption chamber 24. An air outlet 28 is provided on the cover 27, and a plug 29 is provided in the air outlet 28 to slide along the axial direction of the adsorption tube 25. Specifically, the cover 27 is provided with an annular air inlet groove 3 on one side facing the mesh tube 26; the air outlet 28 is coaxially arranged with the cover 27, and the air inlet groove 3 is arranged around the air outlet 28. A number of air holes 1 are evenly distributed around the air outlet 28, and the air holes 1 are connected to the air inlet groove 3. A plurality of air holes 2 are provided around the sealing plug 29; a through groove 31 is coaxially provided along the sealing plug 29, and the through groove 31 opens toward the side away from the mesh tube 26; the air hole 2 is connected with the through groove 31; when the air hole 1 and the air hole 2 are aligned, gas can enter the mesh tube 26. A support plate 32 for supporting the sealing plug 29 is fixed at the end of the mesh tube 26, and a reset spring 33 is fixed between the support plate 32 and the sealing plug 29, which is used to drive the sealing plug 29 to reset to the outside of the adsorption tube 25. The end of the sealing plug 29 facing the outside of the mesh tube 26 is rounded along its own axial direction.

[0043] Specifically, the end of the air outlet of the condensation chamber 16 and the end of the air outlet pipeline 19 are respectively fitted with the disc surface of the adsorption turntable 17. The air outlet of the condensation chamber 16 and the end of the air outlet pipeline 19 close to the adsorption turntable 17 are both provided with a sinking groove, so that when the seal 29 is plugged into the sinking groove, the air hole 1 and the air hole 2 are aligned. When the adsorption disc rotates until the adsorption chamber 24 is aligned with the air outlet pipeline 19, the adsorption chamber 24 is also aligned with the air outlet of the condensation chamber 16. In the initial state, the air hole 1 and the air hole 2 are misaligned; when the seals 29 at both ends of the adsorption tube 25 contact the air outlet end and the pipe wall end of the air outlet pipeline 19 respectively, the seal 29 is pressed by the rounded corners at the end of the seal 29 to move to the side close to the mesh tube 26 to the end of the stroke, and the air hole 1 and the air hole 2 are still in a misaligned state; after the adsorption disc continues to rotate, the seal 29 is plugged into the sinking groove.

[0044] A water discharge chamber 34 and a material change chamber 35 are respectively arranged on both sides of the adsorption turntable 17; two material change chambers 36 are provided on the material change chamber 35 for placing the adsorption tubes 25 to be replaced, and preferably, the two material change chambers 36 are symmetrically arranged. When the adsorption chamber 24 rotates downward to the end of the stroke, it is aligned with the water discharge chamber 34 and one of the material change chambers 36.

[0045] The water outlet chamber 34 is a round tube with one end open; the inner walls of the water outlet chamber 34 and the refueling chamber 36 away from the adsorption turntable 17 are respectively provided with avoidance grooves 37 that can be plugged with the sealing plug 29, so that when the sealing cover 27 contacts the inner wall, the sealing plug 29 is in a state of not being pressed. The inner walls of the water outlet chamber 34 and the refueling chamber 36 away from the adsorption turntable 17 are respectively fixed with electromagnet 1 and electromagnet 2 38, and electromagnet 1 and electromagnet 2 38 are both arranged around the avoidance groove 37. A strip-shaped water outlet hole is provided at the bottom of the water outlet chamber 34, and the water outlet hole is connected to the water outlet pipe 2. After the adsorption pipe 25 moves to the water outlet chamber 34, it drains water into the water outlet hole through the mesh pipe 26. Condenser 11 is a spiral radiator, and condenser 11 is wound around the side of the water outlet chamber 34. Specifically, after the coolant flows to the condenser 11, part of the heat is discharged, so that the adsorbent is desorbed by heat; after the condensing agent leaves the condenser 11, the temperature is reduced, which is convenient for secondary pressurization.

[0046] Specifically, the heating wire sensor 21 is connected to the electromagnet 1, and the connection circuit of the heating wire is also provided with an NTC thermistor, a comparator, a timer and a relay. Specifically, the heating wire and the NTC thermistor are connected in parallel and connected to one input end of the comparator, and the other input end of the comparator is connected to the reference voltage. The output end of the comparator is connected to the input end of the timer; the output end of the timer is connected to the relay coil, and the electromagnet 1 is connected to the normally open contact of the relay. When the humidity of the airflow to be measured increases, the comparator detects that the input voltage is lower than the reference voltage and sends a high level to the timer, the timer starts timing, and the electromagnet 1 connected to the relay is energized at the same time; the timer stops timing after the unit time is one, and sends a low level to the relay, and the relay controls the electromagnet 1 to be powered off.

[0047] Specifically, the heating wire sensor 21 is connected to the motor 1 23 through a comparator and a timer, wherein the connection circuit of the heating wire, NTC thermistor, comparator, timer and electromagnet 1 is the same, and the output end of the timer is connected to the stepper motor controller. When the humidity of the airflow to be measured increases, the comparator detects that the input voltage is lower than the reference voltage and sends a high level to the timer, the timer starts timing, and the stepper motor driver is powered on at the same time; the timer stops timing after timing unit time two, and sends a low level to the stepper motor driver, and the stepper motor driver stops working. Within unit time two, the stepper motor driver controls the stepper motor output shaft to rotate 180°, so that the two adsorption chambers 24 exchange positions with each other.

[0048] Electromagnet three and electromagnet four are fixed at both ends of the adsorption chamber 24. A metal ring that can be magnetically adsorbed by electromagnet three and electromagnet four is fixed on the outer peripheral surface of the cover 27. In the present embodiment, electromagnet three is close to the water outlet chamber 34, and is used to attract the adsorption tube 25 to move from the material exchange chamber 36 to the adsorption chamber 24; electromagnet four is close to the adsorption turntable 17, and is used to attract the adsorption tube 25 to move from the water outlet chamber 34 to the adsorption chamber 24. Two groups of contact switches one are arranged on the outer peripheral surface of the adsorption turntable 17; the two groups of contact switches one are respectively connected to electromagnet three and electromagnet four; contact switch one is in a disconnected state after being pressed, otherwise it is in a conducting state. It should be noted that electromagnet three and electromagnet four are arranged in each group of adsorption chambers 24, and two groups of contact switches one are arranged on the outer peripheral surface of the adsorption turntable 17, which are respectively connected to electromagnet three and electromagnet four in the adsorption chamber 24; a total of four groups of contact switches one are arranged on the outer peripheral surface of the adsorption turntable 17.

[0049] Two slide grooves 1 are provided at the bottom of the inner circumference of the support ring 1 22 along the radial direction of the support ring 1 22, and a slider 1 is provided in the slide groove 1 for vertical sliding. A compression spring is fixed between the slide groove 1 and the slider 1, which is used to drive the slider 1 to reset upward so that the top of the slider 1 extends out of the slide groove 1. An electromagnet 5 is fixed on one side wall of the slide groove, and a metal sheet that can be magnetically attracted to the electromagnet 5 is fixed on one side wall of the slider; when the electromagnet 5 is energized, the slider 1 is driven to move downward.

[0050] Specifically, when the adsorption chamber 24 rotates downward to the end of the stroke, the two groups of contact switches 1 are aligned with the two slide grooves respectively; the slider 1 abuts against the contact switch 1, and the electromagnet 3 and the electromagnet 4 are de-energized; after the electromagnet 5 is energized, the slider 1 is separated from the contact switch 1, and the electromagnet 3 or the electromagnet 4 is energized.

[0051] Specifically, the heating wire is electrically connected to the electromagnet 5 near the side of the material change turntable 35 through a comparator, a timer and a relay. The connection circuit of the heating wire, the NTC thermistor, the comparator, the timer, the relay and the electromagnet 1 is the same, and the electromagnet 5 is connected to the normally closed contact of the relay. When the humidity of the airflow to be measured increases, the comparator detects that the input voltage is lower than the reference voltage and sends a high level to the timer, the timer starts timing, and the electromagnet 5 connected to the relay is powered off; the timer stops timing after the unit time is one, and sends a low level to the relay, and the relay controls the electromagnet 5 to be powered on.

[0052] Furthermore, when the relative humidity of the airflow to be measured in the air outlet pipe 19 exceeds the threshold, the total resistance of the heating wire and the NTC thermistor will be triggered to decrease, so that the voltage to be measured of the input comparator is reduced, and the comparator sends a high level to several timers, and the stepper electric driver is powered on and drives the adsorption turntable 17 to rotate. After a unit time of two, the adsorption turntable 17 rotates 180°, and the adsorption tube 25 initially located at the top rotates downward to the end of the stroke, and the stepper motor driver is powered off. The timer starts timing after receiving the high level; wherein the electromagnet 1 is powered on under the high level signal, and the electromagnet 5 is powered off under the high level signal; when the adsorption chamber 24 rotates downward to the end of the stroke, the slider 1 contacts the contact switch 1, and the electromagnets 3 and 4 are both powered off; the adsorption tube 25 moves to the side of the water outlet compartment 34 under the magnetic attraction of the electromagnet 1 to perform the dehydration operation. After a unit time of one, the electromagnet one is de-energized, and at the same time, the electromagnet five connected to the electric heating wire near the side of the material changing turntable 35 is energized, and the corresponding slider one is retracted into the slide slot one under the action of the electromagnet five, so that the electromagnet four is energized, and the adsorption tube 25 returns to the adsorption chamber 24 from the water outlet chamber 34, completing the dehydration operation. In order to prevent the slider one from hindering the rotation of the adsorption turntable 17, the end of the slider one is set to a rounded corner, so that the slider one is separated from the contact switch one when the adsorption turntable 17 rotates.

[0053] A second support ring 39 is arranged around the material changing turntable 35 to provide support for the material changing turntable 35; a second motor 4 is fixed on the second support ring 39, and the output shaft of the second motor 4 is coaxially connected with the material changing turntable 35 to drive the material changing turntable 35 to rotate. A second contact switch is arranged in the material changing chamber 36, preferably, the second contact switch comprises a contact ring 13 arranged around the second electromagnet 38, and the contact ring 13 is fixedly connected to the inner wall of the material changing chamber 36 away from the adsorption turntable 17 through a compression spring; after the adsorption tube 25 abuts against the contact ring 13, the second contact switch is in a conducting state; after the adsorption tube 25 is separated from the contact ring 13, the second contact switch is disconnected. Motor 24 is a stepper motor, and Motor 24 is connected to the power supply through contact switch 2; specifically, after the adsorption tube 25 moves to the material changing chamber, Motor 24 is turned on, and the stepper motor driver controls Motor 24 to start, and the material changing turntable 35 rotates 180° and then stops rotating; after the material changing turntable 35 rotates to the end of the stroke, the material changing chamber 36 initially located above the material changing turntable 35 exchanges positions with the adsorption chamber 24 located below the adsorption turntable 17. It should be noted that the contact switches 2 in the two material changing chambers 36 are connected in series; when the contact switch 2 in one of the material changing chambers 36 is disconnected, the circuit of Motor 24 is in an open circuit state; the adsorption tube 25 returns to the material changing chamber 36 to turn on the contact switch 2, and the stepper motor driver of Motor 24 starts timing.

[0054] Two groups of contact switches 3 are arranged on the outer circumference of the material changing turntable 35; the two groups of contact switches 3 are arranged symmetrically; the contact switch 3 is disconnected after being pressed, otherwise it is turned on; the electromagnet 2 38 is connected to the power supply through the contact switch 3. The bottom of the inner circumference of the support ring 2 39 is provided with a slider 2 and a slide groove 2, and the slide groove 2 is provided with an electromagnet 6; the connection relationship between the slider 2, the slide groove 2, and the electromagnet 6 is the same as the connection relationship between the slider 1, the slide groove 1, and the electromagnet 5. Specifically, after the material changing chamber rotates downward to the end of the stroke, the slider 2 contacts the contact switch 3 and the electromagnet 2 38 is de-energized; after the electromagnet 6 is energized, the slider 2 is separated from the contact switch 3, and the electromagnet 2 38 is energized. The lead-out electrode of the SnO2 semiconductor is connected to the electromagnet 6 through a comparator, a timer and a relay.

[0055] Specifically, the lead-out electrode is connected to one input end of the comparator, and the other input end of the comparator is connected to the reference voltage; the output end of the comparator is connected to the input end of the timer; the output end of the timer is connected to the relay coil, and the electromagnet 6 is connected to the normally open contact of the relay. When the concentration of the combustible gas in the measured airflow increases, the resistance value of the SnO2 semiconductor decreases; the comparator detects that the input voltage is lower than the reference voltage and sends a high level to the timer, the timer starts timing, and the electromagnet 6 connected to the relay is energized; the timer stops timing after the timing unit time 3, and sends a low level to the relay, and the relay controls the electromagnet 6 to cut off the power.

[0056] The lead-out electrode is connected to the motor 1 23 through the comparator and the timer, and the connection circuit is the same as the connection circuit of the heating wire and the motor 1 23. Specifically, when the concentration of the combustible gas in the measured airflow increases, the comparator detects that the input voltage is lower than the reference voltage and sends a high level to the timer, the timer starts timing, and the stepper motor driver is powered on at the same time; the timer stops timing after timing unit time two, and sends a low level to the stepper motor driver, the stepper motor driver stops working, and the two adsorption chambers 24 exchange positions with each other.

[0057] The lead-out electrode is electrically connected to the electromagnet 5 near the side of the water outlet chamber 34 through a comparator, a timer and a relay, and the connection circuit is the same as the connection circuit between the heating wire and the electromagnet 5. Specifically, when the concentration of the combustible gas in the measured airflow increases, the comparator detects that the input voltage is lower than the reference voltage and sends a high level to the timer, the timer starts timing, and the electromagnet 5 connected to the relay is powered off; the timer stops timing after the unit time 4, and sends a low level to the relay, and the relay controls the electromagnet 5 to be powered on.

[0058] Further, when the concentration of combustible gas in the outlet pipe 19 exceeds the threshold, the voltage of the input comparator is reduced, and the comparator sends a high level to several timers, the stepper electric driver is powered on and drives the adsorption turntable 17 to rotate. After the unit time is two, the adsorption turntable 17 rotates 180°, and the adsorption tube 25 initially located at the top rotates downward to the end of the stroke, and the stepper motor driver is powered off. The timer starts timing after receiving the high level; wherein the electromagnet 6 is powered on under the high level signal, and the electromagnet 5 is powered off under the high level signal; the electromagnet 6 is powered on to separate the slider 2 from the contact switch 3, and the electromagnet 2 38 located in the material changing chamber 36 is powered on; since the adsorption turntable 17 is in a rotating state at this time, the electromagnet 3 and the electromagnet 4 are powered on, and the adsorption tube 25 rotating upward is still in the adsorption chamber 24. When the adsorption tube 25 located at the top rotates downward to the end of the stroke, the electromagnet 3 and the electromagnet 4 are both powered off, and the adsorption tube 25 is attracted by the electromagnet 2 38 and moves to the material changing chamber 36, and the adsorption tube 25 is replaced. After the adsorption tube 25 enters the material exchange chamber 36, it contacts the contact switch 2, and the motor 2 4 is energized, the adsorption turntable 17 rotates 180° and causes the adsorption chamber 24 located above to rotate downward to the end of the stroke. After the unit time 3, the electromagnet 6 is de-energized, the slider 2 is separated from the contact switch 3, and the electromagnet 2 38 is de-energized. After the unit time 4, the electromagnet 5 near the side of the water discharge chamber 34 is energized, and the adsorption tube 25 located in the material exchange chamber 36 is moved into the adsorption chamber 24 through magnetic attraction, completing the replacement operation.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An aerosol raw material chemical gas leakage alarm, characterized in that: include: A condensation chamber (16) is used to cool and liquefy water vapor in the airflow to be measured; the condensation chamber (16) is connected to an air intake pipeline (18); An adsorption rotating disk (17) is respectively connected to the condensation chamber (16) and the air outlet pipeline (19); the adsorption rotating disk (17) is used to adsorb liquid water; A gas sensor, arranged in the gas outlet pipeline (19), for detecting the combustible gas content in the gas flow; A heat pump, used to reduce the temperature of the condensation chamber (16), and connected to the gas sensor to provide heat for the gas sensor; The heating wire sensor (21) is used to detect the humidity of the air flow.

2. The aerosol raw material chemical gas leakage alarm according to claim 1, characterized in that: The heat pump comprises a compressor 1 (1), a condenser 1 (11), a compressor 2 (12), a condenser 2, an expansion valve (14) and an evaporator (15) which are connected in sequence; the evaporator (15) is arranged on the periphery of the condensation chamber (16); and the condenser 2 is arranged in the gas sensor.

3. The aerosol raw material chemical gas leakage alarm according to claim 1, characterized in that: The gas sensor comprises: Pedestal; A semiconductor layer (2) is coated on the circumference of the base; the semiconductor layer (2) changes its resistance value after contacting with the combustible gas; The electrode comprises a ring electrode connected to the base and a lead-out electrode connected to the ring electrode.

4. The aerosol raw material chemical gas leakage alarm according to claim 1, characterized in that: The heating wire sensor (21) comprises a heating wire and a thermistor connected in parallel.

5. The aerosol raw material chemical gas leakage alarm according to claim 2, characterized in that: An adsorption tube (25) is movably arranged on the adsorption turntable (17); an adsorbent is arranged in the adsorption tube (25); a water outlet chamber (34) for dehydration and a material replacement turntable (35) for replacing the adsorption tube (25) are respectively arranged on both sides of the adsorption turntable (17); the adsorption turntable (17) is driven to rotate by a motor (23), and the motor (23) is connected to the gas sensor.

6. The aerosol raw material chemical gas leakage alarm according to claim 5, characterized in that: The adsorption tube (25) comprises: A mesh tube (26) for placing an adsorbent; Covers (27) are fixed to both ends of the network tube (26); The sealing plug (29) is slidably connected to the sealing cover (27); the sealing plug (29) and the sealing cover (27) are provided with mutually communicating air holes, and the air holes can be aligned after the sealing plug (29) moves.

7. The aerosol raw material chemical gas leakage alarm according to claim 5, characterized in that: The condenser (11) is arranged on the peripheral side of the water outlet chamber (34); an electromagnet (1) is fixedly arranged in the water outlet chamber (34) for driving the adsorption tube (25) to move; and a water outlet hole is opened at the bottom of the water outlet chamber (34).

8. The aerosol raw material chemical gas leakage alarm according to claim 5, characterized in that: The material changing turntable (35) is provided with a material changing cavity (36) for accommodating the adsorption tube (25); a second electromagnet (38) is fixedly arranged in the material changing cavity (36) for driving the adsorption tube (25) to move; the material changing turntable (35) is connected to a second motor (4), and the second motor (4) drives the material changing turntable (35) to rotate.

9. The aerosol raw material chemical gas leakage alarm according to claim 8, characterized in that: A second contact switch is provided in the material changing chamber (36), and the second motor (4) is connected to a power source via the second contact switch; after the adsorption tube (25) moves into the material changing chamber (36), the second contact switch is turned on.

10. The aerosol raw material chemical gas leakage alarm according to claim 5, characterized in that: The adsorption turntable (17) is provided with an adsorption chamber (24) for accommodating the adsorption tube (25); electromagnet three and electromagnet four are respectively fixedly provided at two ends of the adsorption chamber (24); the electromagnet three and the electromagnet four can drive the adsorption tube (25) to move; a contact switch one is provided on the outer peripheral surface of the adsorption turntable (17), and the electromagnet three and the electromagnet four are respectively connected to a power source through the contact switch one.

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