Hydrogenation booster equipment

Abstract

The hydrogenation boosting equipment includes a cylinder, a piston, a frame, a base plate, a threaded seat, a screw rod, a solenoid valve, a motor reduction mechanism, and a PLC; it also has a detection circuit; the lower end of the frame is mounted on the base plate, the cylinder is mounted on the frame, and connecting pipes are respectively installed on the upper side end and the lower end of the cylinder, and one end of the two solenoid valves is connected to the other end of the two connecting pipes; an opening is installed on the upper end of the cylinder, the threaded seat is installed on the upper end of the opening, the screw rod and the threaded seat are connected together through threads, a bearing seat is installed on the upper end of the piston, and the lower end of the screw rod is installed in the inner ring of the bearing of the bearing seat; a support seat is installed on the upper end of the cylinder, the motor reduction mechanism is installed on the upper end of the support seat, the upper end of the screw rod and the lower end of the rotating shaft of the motor reduction mechanism are installed together, and the piston is located in the cylinder; the detection circuit is installed in the component box. This new type can achieve different compression degrees of hydrogen, and its application is more flexible. When hydrogen leaks, it can timely alarm to prompt the staff to carry out inspection and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen preparation auxiliary equipment, in particular to hydrogenation and pressurizing equipment. Background Art

[0002] There are many ways to prepare hydrogen, including water electrolysis, ammonia decomposition, and biological fermentation. Water electrolysis is a common way to prepare hydrogen. It decomposes water into hydrogen and oxygen through the process of water electrolysis. Ammonia decomposition is also a way to prepare hydrogen. It decomposes ammonia into hydrogen and nitrogen under high temperature and catalyst. Biological fermentation to prepare hydrogen is a process that uses microorganisms to decompose organic matter under anaerobic or micro-oxygen conditions to generate hydrogen.

[0003] After hydrogen is prepared, due to its small volume, in order to increase storage density, reduce costs, and improve hydrogen storage efficiency, the prior art will compress hydrogen and store it in a gas tank. When the hydrogen compressor device currently used is working, the motor drives the piston up or down along the cylinder through the crank-connecting rod structure, and the air that continuously enters through the air inlet is compressed and output to the gas tank for storage. Although the existing hydrogen compressor device meets the production needs to a certain extent, it is limited by the structure and there are some specific technical problems as follows. First, the compression stroke of the piston cannot be adjusted. When the compression stroke of the piston is relatively large, the load of the motor is large (the compression density of hydrogen is high). After a long continuous working time, there is a probability that the motor is damaged due to excessive load (some gas tanks do not need to store relatively high pressure hydrogen), and when the compression stroke of the piston is relatively small, the load of the motor is small, but the compression efficiency is relatively low (some gas tanks need to store relatively high pressure hydrogen), so there are limitations in application. Second, it does not have a hydrogen leakage monitoring function. When hydrogen is leaked from hydrogen production equipment or hydrogen compressors for various reasons, there is a chance that the leaked hydrogen will cause an explosion. In summary, it is particularly necessary to provide a device that can change the pressure of compressed hydrogen and monitor in real time whether there is a hydrogen leak. Utility Model Content

[0004] In order to overcome the drawbacks of the existing hydrogen compressor device due to structural limitations as described in the background, the present invention provides a new type of device which, under the joint action of relevant mechanisms, can compress the input hydrogen to different degrees as needed and then output it to the gas tank (for example, the continuous working time is long, and the gas tank does not need to store relatively high pressure hydrogen, the operating stroke of the adjustable piston is relatively short, and vice versa). The working method is more flexible, and when hydrogen production equipment and hydrogen compressor devices leak hydrogen due to various reasons, the alarm can be triggered in time to prompt the staff to carry out inspection and maintenance, thereby reducing the number of hydrogenation boosting equipment causing major safety accidents due to hydrogen leakage.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The hydrogenation boosting equipment comprises a cylinder, a piston, a frame, a base plate, a wire seat, a screw rod, a solenoid valve, a motor reduction mechanism and a PLC; the characteristic is that it also has a detection circuit; the lower end of the frame is mounted on the base plate, the cylinder is mounted on the frame, connecting pipes are respectively mounted on the upper end and the lower end of the cylinder, there are at least two solenoid valves, one end of the two solenoid valves is respectively connected to the other end of the two connecting pipes; an opening is mounted on the upper end of the cylinder, the wire seat is mounted on the upper end of the opening, the screw rod and the wire seat are connected together through threads, a bearing seat is mounted on the upper end of the piston, and the lower end of the screw rod is mounted in the inner ring of the bearing of the bearing seat; a support seat is mounted on the upper end of the cylinder, the motor reduction mechanism is mounted on the upper end of the support seat, the upper end of the screw rod and the lower end of the rotating shaft of the motor reduction mechanism are mounted together, and the piston is located in the cylinder; the detection circuit and PLC are mounted in the component box.

[0007] Furthermore, the lower end of the frame is a hollow structure, and a hose is installed at the other end of the solenoid valve at the lower end of the cylinder.

[0008] Furthermore, the PLC can also be replaced by one of a single chip microcomputer module and a host computer.

[0009] Furthermore, the solenoid valve is a normally closed valve core solenoid valve.

[0010] Further, the detection circuit includes an electrically connected gas-sensitive device, an adjustable resistor, a resistor, a transistor and a buzzer, the adjustable resistor is connected to one end of the first resistor and one end of the second resistor, the other end of the second resistor is connected to the base of the transistor, the collector of the transistor is connected to the negative power supply input end of the buzzer, the other end of the first resistor is connected to the emitter of the transistor and the negative power supply input end of the gas-sensitive device, the second measuring pole of the gas-sensitive device is connected to the other end of the adjustable resistor, the positive power supply input end of the buzzer is connected to one end of the third resistor and the first measuring pole of the gas-sensitive device, and the positive power supply input end of the gas-sensitive device is connected to the other end of the third resistor.

[0011] Compared with the prior art, the utility model has the following beneficial effects: in the application of the utility model, the PLC can control the opening and closing of the first solenoid valve and the second solenoid valve one by one, input the hydrogen to be compressed into the gas storage tank, and output the working time of the motor reduction mechanism to the PLC control, and can adjust the spacing of the motor reduction mechanism to drive the piston downward, so as to achieve different compression degrees of hydrogen, and the application is more flexible. When hydrogen leakage occurs in the hydrogen production equipment and the hydrogen compressor device due to various reasons, the detection circuit can timely alarm to prompt the staff to carry out inspection and maintenance, thereby reducing major safety accidents caused by hydrogen leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0015] Figure 1 , 2 As shown in, the hydrogenation and pressurizing equipment includes a power module A1, a cylinder 1, a piston 2, a frame 3, a base plate 4, a wire seat 5, a screw rod 6, solenoid valves DC1 and DC2, a motor reduction mechanism M, and a PLC. The power output terminals 1, 2, 3, and 4 of the PLC and the power input terminals of the two solenoid valves DC1 and DC2 are respectively connected by wires; the power output terminals 5, 6, 7, and 8 of the PLC and the positive and negative and negative and positive power input terminals of the motor reduction mechanism M are respectively connected by wires, and a detection circuit 7 is also provided; the lower end of the "Π"-shaped frame 3 is welded to the middle of the base plate 4, the lower end of the vertically distributed cylinder 1 is welded to the middle of the upper end of the frame 3, and a connecting pipe that communicates with the cylinder is welded to the upper side of the left end and the lower end of the middle part of the cylinder 1, respectively. There are two solenoid valves DC1 and DC2, One end of the two solenoid valves DC1 and DC2 are respectively connected to the connecting pipes on the upper side of the left end and the lower end of the middle part of the cylinder 1 through threads; there is an opening in the middle of the upper end of the cylinder 1, the lower end of the wire seat 5 is welded to the outside of the upper end of the opening, the screw rod 6 is screwed into the wire seat 5 and connected with the wire seat 5 through threads, and a bearing seat 8 is installed on the outside of the middle of the upper end of the piston through bolts, and the lower end of the screw rod 6 is tightly sleeved in the inner ring of the bearing of the bearing seat 8; a support seat 9 is welded to the outside of the upper end of the cylinder on both sides, the motor reduction mechanism M is vertically distributed, and the two sides of its shell are respectively installed on the upper ends of the two support seats 9, and the upper end of the screw rod 6 and the lower end of the rotating shaft of the motor reduction mechanism M1 are welded together; the power module A1, the detection circuit 7, and the PLC are installed on the circuit board in the component box 10, and the component box 10 is installed on the right end of the frame. The power input terminals 1 and 2 of the power supply A1 are connected to the two levels of the AC 220V power supply via wires, and the power output terminals 3 and 4 of the power module A1 are connected to one end of the power input resistor R1 of the detection circuit, the emitter of the transistor Q1, and the power input terminal of the PLC via wires.

[0016] Figure 1 , 2 As shown in the figure, the lower end of the frame 3 is a hollow structure, and a hose 11 is tightly installed on the outer side of the sleeve in the other end of the solenoid valve DC2 at the lower end of the cylinder. PLC can also be replaced by a single chip microcomputer module and a host computer. The two solenoid valves DC1 and DC2 are normally closed valve core solenoid valves.

[0017] The detection circuit includes a gas sensor T, an adjustable resistor RP, resistors R1, R2, R, a transistor Q1 and a buzzer B connected through circuit board wiring, one end of the adjustable resistor RP1 is connected to one end of the first resistor R1 and one end of the second resistor R2, the other end of the second resistor R2 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the negative power input end of the buzzer B, the other end of the first resistor R1 is connected to the emitter of the transistor Q1 and the negative power input end 2 of the gas sensor T, the second measuring pole 4 of the gas sensor T is connected to the other end of the adjustable resistor RP1, the positive power input end of the buzzer B is connected to one end of the third resistor R and the first measuring pole 3 of the gas sensor T, and the positive power input end 1 of the gas sensor T is connected to the other end of the third resistor R.

[0018] Figure 1 , 2As shown, before the application of this new type, the other end of the first solenoid valve DC1 is connected to the exhaust pipe of the hydrogen preparation equipment in the previous process through a hose, and the hose 11 at the other end of the second solenoid valve is placed outside the air inlet pipe at the upper end of the manual valve 13 at the upper end of the hydrogen tank 12, and the manual valve 13 is opened. After the 220V AC power enters the power input end of the power module A1, the 3rd and 4th pins of the power module A1 output a stable DC 24V DC power supply to the power input end of the PLC and the detection circuit. After the PLC is powered on, its 1st and 2nd pins first output power to the power input end of the solenoid valve DC1 for a period of time (for example, output for 5 seconds). In this way, within 5 seconds (the valve core of the solenoid valve DC1 is powered on and opened), the hydrogen output by the hydrogen preparation equipment enters the cylinder 1. Then, pins 5 and 6 of the PLC (pins 3 and 4 of the synchronous PLC output 6 seconds of power to the power input terminal of the solenoid valve DC2) output power for a certain period of time to the positive and negative power input terminals of the motor reduction mechanism M (for example, output for 6 seconds). In this way, within 6 seconds, after the positive and negative poles of the motor reduction mechanism M are energized, its shaft drives the screw 6 to rotate counterclockwise, and the screw 6 moves downward along the screw seat 5 (the lower end of the screw rotates along the inner ring of the bearing seat) and pushes the piston 2 downward. In this way, the piston 2 will compress the hydrogen in the cylinder, and the compressed hydrogen enters the gas storage tank 12. Then, the 7th and 8th pins of the PLC (the 3rd and 4th pins of the synchronous PLC stop outputting power to the power input end of the solenoid valve DC2) output power to the negative and positive power input ends of the motor reduction mechanism M for a certain period of time (for example, output for 6 seconds). In this way, within 6 seconds, after the negative and positive poles of the motor reduction mechanism M are energized, its rotating shaft drives the screw 6 to rotate clockwise, and the screw 6 moves upward along the wire seat 5, driving the piston 2 upward. In this way, the piston 2 returns to the initial position in the upper part of the cylinder, and is ready for the next compression of hydrogen into the gas storage tank 12. The above process is cyclical, and the hydrogen prepared in the previous process will be continuously compressed into the gas storage tank. In actual situations, the staff can adjust the distance of the piston going down along the cylinder by adjusting the power output time of the 5th and 6th pins and the 7th and 8th pins of the PLC. The longer the power output time to the motor reduction mechanism, the greater the density of the hydrogen being compressed, and the relatively greater the pressure when it finally enters the gas storage tank. The shorter the output time, the smaller the density of the hydrogen being compressed, and the relatively lower the pressure when it finally enters the gas storage tank. The staff observes the value of the pressure gauge on the gas tank. When the hydrogen volume is sufficient, they can close the valve 13, remove the hose connected to the second solenoid valve, and move the gas tank to complete the whole operation. Through the above, the PLC can control the opening and closing of the first solenoid valve and the second solenoid valve one by one, input the hydrogen to be compressed into the gas tank, and control the working time of the motor reduction mechanism through the PLC, and adjust the spacing of the motor reduction mechanism driving the piston downward to achieve different compression degrees of hydrogen, which is more flexible in application.It should be noted that the PLC's multiple power output terminals are separated by time intervals to control the working time of different electrical equipment, which is an extremely mature control technology available. This application does not provide any protection for the PLC's (Mitsubishi FX3U model PLC controller industrial control board) multiple power output terminals to separate time intervals to control the working time of different electrical equipment. This application protects a method that can flexibly control the working time of the motor reduction mechanism so that it can work at an appropriate power to compress hydrogen.

[0019] Figure 1 , 2 As shown, after the detection circuit is powered on, when no hydrogen leakage occurs on site (resistor R reduces voltage and limits current to power the gas sensor internally), the resistance value between the first measuring electrode pin 3 and the second measuring electrode pin 4 of the gas sensor T is relatively large, and the voltage signal output by pin 4 of the gas sensor T is relatively low. The voltage signal is divided by the adjustable resistor RP and the resistor R1, and the resistor R2 reduces voltage and limits current to enter the transistor Q1. The transistor voltage is lower than 0.7V, and the transistor Q1 will not be turned on. Then, the buzzer B will not be powered on to sound, indicating that no hydrogen leakage occurs on site. When hydrogen leaks on site, the resistance between the first measuring pole 3 and the second measuring pole 4 of the gas sensor T is relatively small, and the voltage signal output by the 4th pin of the gas sensor T is relatively high. The voltage signal is divided by the adjustable resistor RP and the resistor R1, and the resistor R2 steps down and limits the current to enter the transistor Q1. The transistor is higher than 0.7V, and the transistor Q1 will conduct the collector to output a low level to the negative power input terminal of the buzzer B. Then, the buzzer B will be powered and sound, indicating that hydrogen leaks on site. After hearing the sound, the staff can carry out corresponding maintenance in time to prevent major safety accidents caused by hydrogen leaks. Figure 2 As shown, power module A1 is a finished product of an AC 220V to DC 24V switching power module; buzzer B is a finished product of an active continuous sound buzzer alarm of model MF12V; the power of solenoid valves DC1 and DC2 is 2W (normally closed valve core); the transistor Q1 model is 9013 (NPN transistor); the resistance values ​​of resistors R, R1, and R2 are 200Ω, 10K, and 47K respectively; the gas sensor is a combustible gas detection module of model MQ-2; the resistance value of the adjustable resistor RP is 470K (the larger the resistance value is adjusted, the transistor Q1 will be turned on only when the amount of hydrogen leakage detected later is relatively large, that is, the detection threshold value becomes larger, and vice versa).

[0020] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.

[0021] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Hydrogenation pressurizing equipment, including a cylinder, a piston, a frame, a base plate, a screw seat, a screw rod, a solenoid valve, a motor reduction mechanism, and a PLC; characterized in that: It also has a detection circuit; the lower end of the frame is installed on the base plate, the cylinder is installed on the frame, and connecting pipes are installed on the upper end and the lower end of the cylinder respectively. There are at least two solenoid valves, and one end of the two solenoid valves is connected to the other end of the two connecting pipes respectively; an opening is installed on the upper end of the cylinder, the wire seat is installed on the upper end of the opening, the screw rod and the wire seat are connected together through threads, a bearing seat is installed on the upper end of the piston, and the lower end of the screw rod is installed in the inner ring of the bearing of the bearing seat; a support seat is installed on the upper end of the cylinder, the motor reduction mechanism is installed on the upper end of the support seat, the upper end of the screw rod and the lower end of the rotating shaft of the motor reduction mechanism are installed together, and the piston is located in the cylinder; the detection circuit and PLC are installed in the component box.

2. The hydrogenation pressurizing equipment according to claim 1, characterized in that: The lower end of the frame is a hollow structure, and a hose is installed at the other end of the solenoid valve at the lower end of the cylinder.

3. The hydrogenation pressurizing equipment according to claim 1, characterized in that: PLC can also be replaced by one of the microcontroller modules and the host computer.

4. The hydrogenation pressurizing equipment according to claim 1, characterized in that: The solenoid valve is a normally closed spool solenoid valve.

5. The hydrogenation pressurizing equipment according to claim 1, characterized in that: The detection circuit includes an electrically connected gas-sensitive device, an adjustable resistor, a resistor, a transistor and a buzzer. The adjustable resistor is connected to one end of the first resistor and one end of the second resistor. The other end of the second resistor is connected to the base of the transistor. The collector of the transistor is connected to the negative power input end of the buzzer. The other end of the first resistor is connected to the emitter of the transistor and the negative power input end of the gas-sensitive device. The second measuring pole of the gas-sensitive device is connected to the other end of the adjustable resistor. The positive power input end of the buzzer is connected to one end of the third resistor and the first measuring pole of the gas-sensitive device. The positive power input end of the gas-sensitive device is connected to the other end of the third resistor.

Images