Hydrogen filtering system with electric heating and water level monitoring functions

Abstract

The invention discloses a hydrogen filtering system with electric heating and water level monitoring functions, belongs to the technical field of filters, and solves the technical problem that an existing filter is lack of heating and water level monitoring. The system comprises a filter seat and a controller, a filter tank is arranged at the bottom of the filter seat, a filter element is arranged in the filter tank, an air inlet connector and an air outlet connector are arranged on the two sides of the upper end of the filter seat respectively, an air outlet channel communicated with a center hole of the filter element is arranged in the filter seat, the air inlet connector is communicated with an inner cavity of the filter tank, and the air outlet connector is communicated with the air outlet channel. The filter element is of a cylindrical structure with the lower end closed, an electric heating device is arranged in the filter tank, a sewage cavity is formed in the bottom of an inner cavity of the filter tank, a liquid level sensor is arranged in the sewage cavity, an electromagnetic valve is arranged at the bottom of the sewage cavity, and the controller is electrically connected with the electric heating device, the liquid level sensor and the electromagnetic valve. Hydrogen can be heated through the electric heating device; when the liquid level sensor detects that the water level reaches an alarm value, the electromagnetic valve can be opened for automatic pollution discharge.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and more particularly to a hydrogen filtering system with electric heating and water level monitoring. Background Art

[0002] During the operation of the engine, clean fuel needs to be provided for combustion, which can not only give full play to the engine's power and economy, but also reduce the risk of blockage and corrosion of key engine parts and improve the reliability of the engine. The filter can filter the oil, water and particulate impurities in the fuel, playing a key role in delivering clean fuel to the engine.

[0003] Engine fuel media can be roughly divided into traditional fuel oil, natural gas and new alternative energy hydrogen, etc. Therefore, according to the different fuel media, filters can be divided into fuel filters, gas filters, hydrogen filters, etc.

[0004] Traditional hydrogen filters have a simple structure and lack heating and water level monitoring functions. In a hydrogen engine under low temperature conditions, the components of the hydrogen pipelines face the risk of freezing and blocking, and sealing failure and leakage. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. The purpose of the present invention is to provide a hydrogen filtration system with electric heating and water level monitoring.

[0006] The technical solution of the present invention is: a hydrogen filtration system with electric heating and water level monitoring, comprising a filter seat and a controller, a filter tank is provided at the bottom of the filter seat, a filter core is provided in the filter tank, an air inlet joint and an air outlet joint are respectively provided on both sides of the upper end of the filter seat, an air outlet passage connected to the central hole of the filter core is provided in the filter seat, the air inlet joint is connected to the inner cavity of the filter tank, the air outlet joint is connected to the air outlet passage, the filter core is a cylindrical structure with a closed lower end, an electric heating device is provided in the filter tank, a sewage cavity is provided at the bottom of the inner cavity of the filter tank, a liquid level sensor is provided in the sewage cavity, an electromagnetic valve is provided at the bottom of the sewage cavity, and the controller is electrically connected to the electric heating device, the liquid level sensor and the electromagnetic valve;

[0007] When the ambient temperature is lower than the set low temperature, the controller controls the electric heating device to heat the hydrogen in the filter tank to a set temperature range;

[0008] When the liquid level sensor detects that the water level in the sewage chamber reaches an alarm value, the controller controls the solenoid valve to open to discharge sewage until the water level in the sewage chamber drops to a safe value.

[0009] As a further improvement, the air inlet connector is provided with a flow meter and a temperature sensor respectively, and the controller is electrically connected to the flow meter and the temperature sensor;

[0010] The heating power MAP table is pre-calibrated according to the flow rate and temperature of the intake air;

[0011] In actual use, the controller detects the actual flow rate and actual temperature of the intake air in real time through a flow meter and a temperature sensor, queries the heating power MAP table according to the actual flow rate and actual temperature to obtain the target heating power, and the controller controls the operation of the electric heating device according to the target heating power.

[0012] Furthermore, the electric heating device includes a plurality of electric heating tubes, which are inserted upward from the bottom of the filter core into the filter core, the heating part of the electric heating tube is located inside the filter core, and the non-heating part of the electric heating tube is located outside the filter core, and the electric heating tube is sealed to the bottom of the filter core.

[0013] Furthermore, the filter tank is a conical structure with a large upper end and a small lower end.

[0014] Furthermore, an air inlet duct is provided in the filter seat, which is tangent to the upper end of the inner cavity of the filter tank and extends obliquely downward. The air inlet joint is connected to the air inlet duct. An air cylinder is provided on the outside of the filter element, and the lower end of the air cylinder is lower than the lower end of the filter element.

[0015] Furthermore, an anti-interference cylinder is provided at the bottom of the sewage chamber, a water inlet hole is provided at the lower end of the anti-interference cylinder, and the liquid level sensor is vertically installed in the anti-interference cylinder.

[0016] Furthermore, the filter seat and filter tank are both made of 316L material.

[0017] Furthermore, the filter core is a cylindrical structure, and the wall of the filter core is designed to be a pleated structure.

[0018] Furthermore, the air inlet connector and the air outlet connector are both connected to the filter seat via threads, and a first sealing ring is provided between the air inlet connector, the air outlet connector and the filter seat.

[0019] Furthermore, the filter tank is connected to the filter seat via threads, and a second sealing ring is provided between the filter tank and the filter seat.

[0020] Beneficial Effects

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The present invention arranges an electric heating device in the filter tank. When the ambient temperature is lower than the set low temperature, the controller controls the electric heating device to heat the hydrogen in the filter tank to the set temperature range, so as to reduce the risk of components of each hydrogen pipeline being stuck due to icing and unable to work normally, and the risk of leakage due to seal failure.

[0023] 2. The present invention sets a liquid level sensor and a solenoid valve in the filter tank. When the liquid level sensor detects that the water level in the sewage chamber reaches the alarm value, the controller controls the solenoid valve to open and discharge sewage until the water level in the sewage chamber drops to a safe value, so as to realize the automatic drainage function and ensure the stability of the hydrogen filtration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of the present invention;

[0025] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the filter element in the present invention;

[0027] Figure 4 It is the wiring schematic diagram of the controller of the present invention.

[0028] Among them: 1-filter seat, 2-filter tank, 3-filter element, 4-air inlet connector, 5-air outlet connector, 6-air outlet, 7-sewage chamber, 8-liquid level sensor, 9-solenoid valve, 10-flow meter, 11-temperature sensor, 12-electric heating tube, 13-air inlet, 14-air cylinder, 15-anti-interference cylinder, 16-first sealing ring, 17-second sealing ring. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0030] See also Figure 1 to Figure 4 A hydrogen filtration system with electric heating and water level monitoring includes a filter seat 1 and a controller. A filter tank 2 is provided at the bottom of the filter seat 1. A filter core 3 is provided in the filter tank 2. An air inlet connector 4 and an air outlet connector 5 are provided on both sides of the upper end of the filter seat 1. An air outlet 6 connected to the central hole of the filter core 3 is provided in the filter seat 1. The air inlet connector 4 is connected to the inner cavity of the filter tank 2. The air outlet connector 5 is connected to the air outlet 6. The filter core 3 is a cylindrical structure with a closed lower end. An electric heating device is provided in the filter tank 2. A sewage cavity 7 is provided at the bottom of the inner cavity of the filter tank 2. A liquid level sensor 8 is provided in the sewage cavity 7. An electromagnetic valve 9 is provided at the bottom of the sewage cavity 7. The controller is electrically connected to the electric heating device, the liquid level sensor 8, and the electromagnetic valve 9.

[0031] When the ambient temperature is lower than the set low temperature, the controller controls the electric heating device to heat the hydrogen in the filter tank 2 to a set temperature range.

[0032] When the liquid level sensor 8 detects that the water level in the sewage chamber 7 reaches the alarm value, the controller controls the solenoid valve 9 to open and discharge sewage until the water level in the sewage chamber 7 drops to a safe value, which is greater than 0. The sewage is not discharged to prevent hydrogen leakage.

[0033] Furthermore, the air inlet connector 4 is provided with a flow meter 10 and a temperature sensor 11 , respectively, and the controller is electrically connected to the flow meter 10 and the temperature sensor 11 .

[0034] The heating power MAP table can be calibrated in advance according to the flow rate and temperature of the intake air;

[0035] In actual use, the controller detects the actual flow rate and actual temperature of the intake air in real time through the flow meter 10 and the temperature sensor 11, and queries the heating power MAP table according to the actual flow rate and actual temperature to obtain the target heating power. The controller controls the operation of the electric heating device according to the target heating power to adapt to different ambient temperatures and hydrogen flows.

[0036] Specifically, the electric heating device includes a plurality of electric heating tubes 12, which are evenly arranged in a circle, and are inserted upward from the bottom of the filter core 3 into the filter core 3. The heating portion of the electric heating tube 12 is located inside the filter core 3, and the non-heating portion of the electric heating tube 12 is located outside the filter core 3. The electric heating tube 12 is sealed to the bottom of the filter core 3. That is, the filtered hydrogen is heated to a set temperature range, and then enters the engine for full combustion, so that the engine power, economy and reliability are optimized.

[0037] The filter tank 2 is a conical structure with a large upper end and a small lower end. An air inlet 13 is provided in the filter seat 1, which is tangent to the upper end of the inner cavity of the filter tank 2 and extends obliquely downward. The air inlet joint 4 is connected to the air inlet 13. An air cylinder 14 is provided on the outer side of the filter core 3, and the lower end of the air cylinder 14 is lower than the lower end of the filter core 3. The filter tank 2 has a cyclone filtering effect, and the larger particle impurities or water vapor in the hydrogen are initially filtered and dropped into the sewage cavity 7. Then the hydrogen is finely filtered through the filter core 3, which can reduce the adsorption of larger particle impurities on the filter core 3 and extend the working life of the filter core 3.

[0038] An anti-interference cylinder 15 is provided at the bottom of the sewage chamber 7, and a water inlet hole 18 is provided at the lower end of the anti-interference cylinder 15. The liquid level sensor 8 is vertically installed in the anti-interference cylinder 15. In actual work, due to the bumps of the vehicle, the sewage in the sewage chamber 7 will surge, resulting in inaccurate detection of the liquid level sensor 8. After the anti-interference cylinder 15 is added, the sewage in the anti-interference cylinder 15 will not surge, and the liquid surface is relatively calm, thereby ensuring the accuracy of the detection of the liquid level sensor 8.

[0039] The filter seat 1 and the filter tank 2 are both made of 316L material, which has good hydrogen embrittlement resistance and corrosion resistance.

[0040] The filter core 3 is a cylindrical structure, and the wall of the filter core 3 is designed to be a pleated structure, such as Figure 3 As shown, the filtering surface area can be increased and the filtering efficiency can be improved.

[0041] The air inlet connector 4 and the air outlet connector 5 are both connected to the filter seat 1 through threads, and a first sealing ring 16 is provided between the air inlet connector 4, the air outlet connector 5 and the filter seat 1 to ensure the sealing of the connection.

[0042] The filter tank 2 is connected to the filter seat 1 through threads, and a second sealing ring 17 is provided between the filter tank 2 and the filter seat 1 to ensure the sealing of the connection.

[0043] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A hydrogen filtration system with electric heating and water level monitoring, characterized in that: The invention comprises a filter seat (1) and a controller. A filter tank (2) is provided at the bottom of the filter seat (1). A filter core (3) is provided in the filter tank (2). An air inlet joint (4) and an air outlet joint (5) are provided on both sides of the upper end of the filter seat (1). An air outlet passage (6) connected to the central hole of the filter core (3) is provided in the filter seat (1). The air inlet joint (4) is connected to the inner cavity of the filter tank (2). The air outlet joint (5) is connected to the air outlet passage (6). The filter core (3) is a cylindrical structure with a closed lower end. An electric heating device is provided in the filter tank (2). A sewage chamber (7) is provided at the bottom of the inner cavity of the filter tank (2). A liquid level sensor (8) is provided in the sewage chamber (7). An electromagnetic valve (9) is provided at the bottom of the sewage chamber (7). The controller is electrically connected to the electric heating device, the liquid level sensor (8) and the electromagnetic valve (9). When the ambient temperature is lower than a set low temperature, the controller controls the electric heating device to heat the hydrogen in the filter tank (2) to a set temperature range; When the liquid level sensor (8) detects that the water level in the sewage chamber (7) reaches an alarm value, the controller controls the solenoid valve (9) to open and discharge sewage until the water level in the sewage chamber (7) drops to a safe value.

2. A hydrogen filtration system with electric heating and water level monitoring according to claim 1, characterized in that: The air inlet connector (4) is provided with a flow meter (10) and a temperature sensor (11), respectively, and the controller is electrically connected to the flow meter (10) and the temperature sensor (11); The heating power MAP table is pre-calibrated according to the flow rate and temperature of the intake air; In actual use, the controller detects the actual flow rate and actual temperature of the intake air in real time through the flow meter (10) and the temperature sensor (11), queries the heating power MAP table according to the actual flow rate and actual temperature to obtain the target heating power, and the controller controls the operation of the electric heating device according to the target heating power.

3. A hydrogen filtration system with electric heating and water level monitoring according to claim 1, characterized in that: The electric heating device comprises a plurality of electric heating tubes (12), wherein the electric heating tubes (12) are inserted upwards from the bottom of the filter core (3) into the filter core (3), the heating portion of the electric heating tubes (12) is located inside the filter core (3), the non-heating portion of the electric heating tubes (12) is located outside the filter core (3), and the electric heating tubes (12) are sealed to the bottom of the filter core (3).

4. A hydrogen filtration system with electric heating and water level monitoring according to claim 1, characterized in that: The filter tank (2) is a conical structure with a large upper end and a small lower end.

5. A hydrogen filtration system with electric heating and water level monitoring according to claim 4, characterized in that: The filter seat (1) is provided with an air inlet duct (13) which is tangent to the upper end of the inner cavity of the filter tank (2) and extends obliquely downward. The air inlet connector (4) is connected to the air inlet duct (13). An air cylinder (14) is provided on the outer side of the filter core (3). The lower end of the air cylinder (14) is lower than the lower end of the filter core (3).

6. A hydrogen filtration system with electric heating and water level monitoring according to claim 1, characterized in that: An anti-tampering cylinder (15) is provided at the bottom of the sewage chamber (7), a water inlet hole (18) is provided at the lower end of the anti-tampering cylinder (15), and the liquid level sensor (8) is vertically installed in the anti-tampering cylinder (15).

7. A hydrogen filtration system with electric heating and water level monitoring according to claim 1, characterized in that: The filter seat (1) and the filter tank (2) are both made of 316L material.

8. A hydrogen filtration system with electric heating and water level monitoring according to claim 1, characterized in that: The filter core (3) is a cylindrical structure, and the wall of the filter core (3) is designed to be a pleated structure.

9. A hydrogen filtration system with electric heating and water level monitoring according to claim 1, characterized in that: The air inlet connector (4) and the air outlet connector (5) are both connected to the filter seat (1) via threads, and a first sealing ring (16) is provided between the air inlet connector (4), the air outlet connector (5) and the filter seat (1).

10. A hydrogen filtration system with electric heating and water level monitoring according to claim 1, characterized in that: The filter tank (2) is connected to the filter seat (1) via threads, and a second sealing ring (17) is provided between the filter tank (2) and the filter seat (1).

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