CN217603853U - Ammonia pressure stabilizing device - Google Patents

Abstract

The utility model belongs to the technical field of voltage regulator device, in particular to ammonia voltage regulator device. This ammonia pressure stabilizer includes the jar body, and the jar body is provided with pressure sensor and surge damping valve, and the jar body is worn to be equipped with the pipeline that carries the ammonia, and the one end intercommunication of pipeline is to surge damping valve, still includes: and the heating device is contacted with the ammonia gas in the tank body. This ammonia pressure stabilizer is provided with heating device, through the ammonia contact heat transfer of heating device and jar body, makes the internal ammonia temperature of jar be higher than the dew point of ammonia all the time, guarantees that output tank body atmospheric pressure is stable. The ammonia pressure stabilizing device is also provided with a pressure sensor, a pressure stabilizing valve and a metering valve, the pressure sensor, the pressure stabilizing valve and the metering valve are respectively and electrically connected with the controller, a set of high-precision pressure stabilizing control system is established, the pressure range of the output ammonia gas can be controlled to be 0.02Mpa-2.5Mpa through the high-precision pressure stabilizing control system, the pressure stabilizing precision is less than 0.5%, and the pressure can be kept stable under various temperatures and various working conditions.

Description

Ammonia pressure stabilizing device

Technical Field

The utility model belongs to the technical field of voltage regulator device, in particular to ammonia voltage regulator device.

Background

The ammonia gas is widely applied to the field of denitration and the field of hydrogen production by ammonia cracking, and in the field of denitration, the ammonia gas is used as a carbon-free reducing agent for denitration reaction, and in the field of hydrogen production by ammonia cracking, the ammonia gas can be used as a carbon-free reaction gas for preparing hydrogen. In the prior art, ammonia needs to be introduced into a pressure stabilizer before ammonia is output, so that the pressure of the output ammonia is stable, but the ammonia is condensed into liquid in the pressure stabilizer possibly in cold high-latitude areas due to the fact that the boiling point of the ammonia under normal pressure is 33 ℃ below zero, and therefore the pressure of the ammonia in the pressure stabilizer is reduced, the pressure of the output ammonia is unstable, and the output of the ammonia is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide an ammonia voltage regulator device, can guarantee that the ammonia pressure of output is stable.

In order to solve the technical problem, the application provides an ammonia voltage regulator, which comprises a tank body, the jar body is provided with pressure sensor and surge damping valve, the pipeline that is equipped with the ammonia is worn to be equipped with by the jar body, the one end intercommunication of pipeline is to surge damping valve, still includes:

the heating device is in contact with the ammonia gas in the tank body, and the heating device is used for changing the temperature of the ammonia gas in the tank body so as to adjust the pressure of the ammonia gas in the tank body.

The ammonia gas in the tank body is contacted with the heating device for heat exchange, so that the temperature of the ammonia gas in the tank body is always higher than the dew point of the ammonia gas, the air pressure of the tank body cannot be suddenly reduced, and the stability of the air pressure of the output tank body is ensured.

Further, the pressure stabilizing valve further comprises a controller, and the controller is electrically connected with the pressure sensor and the pressure stabilizing valve respectively.

Further, heating device is fin tubular heat exchanger, heating device includes heat exchange tube and fin, the heat exchange tube is the tube-shape, the heat exchange tube is pegged graft into a jar body, the surface mounting of heat exchange tube has a plurality of the fin, the fin is along the equidistant range of length direction of heat exchange tube.

The finned tube heat exchanger achieves the purpose of enhancing heat transfer by adding fins.

Furthermore, the outlet end of the heat exchange tube is close to the pressure stabilizing valve, and the inlet end of the heat exchange tube is far away from the pressure stabilizing valve.

Further, the heating device is arranged at the bottom of the tank body.

The heating device arranged at the bottom of the tank body can keep the ammonia gas in the tank body at a more uniform temperature, and avoids pressure fluctuation caused by overhigh local temperature.

Further, the pressure stabilizing valve is installed in the middle of the tank body, a pressure stabilizing valve fixing seat is installed in the tank body, the pressure stabilizing valve is connected with the pressure stabilizing valve fixing seat, an inlet joint is installed on the pressure stabilizing valve, and one end of the pipeline is connected with the pressure stabilizing valve after being sleeved on the inlet joint.

Further, the pressure stabilizing valve is an electromagnetic valve.

Further, still include outlet joint and metering valve, install the outlet joint fixing base in the jar body, the outlet joint with the outlet joint fixing base is connected, the other end of pipeline in proper order with the outlet joint with the metering valve intercommunication.

Further, the pressure sensor is arranged at the top of the tank body.

Further, the heating device comprises an electric heater or a heat exchanger.

By last, this ammonia voltage regulator device is provided with heating device, through the ammonia contact heat transfer of heating device with the jar body, makes the internal ammonia temperature of jar be higher than the dew point of ammonia all the time, guarantees that output tank body atmospheric pressure is stable. The ammonia pressure stabilizing device is also provided with a pressure sensor, a pressure stabilizing valve and a metering valve, the pressure sensor, the pressure stabilizing valve and the metering valve are respectively and electrically connected with the controller, a set of high-precision pressure stabilizing control system is established, the pressure range of the output ammonia gas can be controlled to be 0.02Mpa-2.5Mpa through the high-precision pressure stabilizing control system, the pressure stabilizing precision is less than 0.5%, and the pressure can be kept stable under various temperatures and various working conditions.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

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

Fig. 2 is a partial enlarged view at a in fig. 1.

Fig. 3 is a partial enlarged view at B in fig. 1.

Fig. 4 is a schematic diagram of the control system of the present application.

Description of the reference symbols: 1. a tank body; 11. a pressure stabilizing valve fixing seat; 111. a flange; 12. an outlet connector fixing seat; 13. a pressure sensor holder; 2. a pipeline; 3. an inlet fitting; 4. a pressure maintaining valve; 41. a valve body; 411. an air inlet; 412. an air outlet; 42. a coil; 43. a valve core; 5. an outlet fitting; 6. a metering valve; 7. a pressure sensor; 8. a heating device; 81. a heat exchange pipe; 811. an inlet end; 812. an outlet end; 82. a fin; 83. a clamping part.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Fig. 1 shows a schematic structural diagram of the ammonia pressure stabilizer of the present invention. This ammonia voltage regulator includes jar body 1, pipeline 2, in this embodiment, jar body 1 is horizontal microscler storage tank, be used for the temporary storage ammonia, buffer pressure fluctuation, it is more steady to make the ammonia output, the intercommunication has pipeline 2 that is used for carrying the ammonia on jar body 1, it is specific, the left side of jar body 1 is the input pipeline of ammonia, the right side of jar body 1 is the output pipeline of ammonia, it lets in from the left side of jar body 1 to become the unstable ammonia of pressure by liquid ammonia vaporization, get into in the cavity of jar body 1, because the air flow sectional area increases, gas velocity reduces, play the effect of buffering.

In order to prevent the ammonia pressure stabilizer from liquefying in the tank body 1 at the environmental temperature lower than the dew point of the ammonia, the heating device 8 is additionally arranged, the heating device 8 is in contact heat exchange with the ammonia in the tank body 1, so that the temperature of the ammonia in the tank body 1 is always higher than the dew point of the ammonia, the air pressure of the tank body 1 cannot be suddenly reduced, the air pressure of the tank body 1 is ensured to be stable, and the heating device 8 changes the pressure of the ammonia in the tank body 1 by changing the temperature of the ammonia in the tank body 1.

The heating device 8 can be a tubular electric heater, a heating wire part of the electric heater extends into the tank body 1 and is in direct contact with ammonia gas, current is introduced into the electric heater in the working process, and the high-resistivity heating wire generates joule heat so as to heat the ammonia gas in contact with the heating wire. The heating device 8 can also adopt a heat exchanger, and a finned tube heat exchanger is mainly used for a heat exchange scene between liquid and gas, and achieves the purpose of enhancing heat transfer by adding fins 82.

In this embodiment, the heating device 8 includes a heat exchange tube 81 and fins 82, the heat exchange tube 81 is cylindrical, the heat exchange tube 81 is used for introducing high-temperature liquid or gas, a plurality of fins 82 are installed outside the heat exchange tube 81, the fins 82 are arranged at equal intervals along the length direction of the heat exchange tube 81, and the fins 82 achieve the purpose of enhancing heat transfer by increasing the contact area with the gas. Two positions of the side wall of the tank body 1 are provided with holes with the same outer diameter as the heat exchange tube 81, after the heat exchange tube 81 is inserted into the tank body 1, the two positions of the holes on the tank body 1 are sealed with the outer wall of the heat exchange tube 81 in a welding, bonding and other modes, and ammonia gas leakage is prevented.

It should be noted that the heat exchange tube 81 is not necessarily a straight tube as shown in fig. 1, but the straight tube is simpler and lower in cost when the tank body 1 is processed and assembled, and can be actually replaced by a circuitous bent tube according to production requirements to improve the heat exchange effect.

According to the certain prerequisite of atmospheric pressure, the gas temperature is big more, the less principle of density, and heating device 8 should set up in the bottom of jar body 1, and the ammonia after heating device 8 heats can the come-up like this, and the lower ammonia of temperature can sink to contact with heating device 8, consequently can make the ammonia of jar body 1 in keep at more even temperature, avoids the too high pressure oscillation that produces of local temperature.

The two ends of the heat exchange tube 81 are respectively an inlet end 811 and an outlet end 812, the inlet end 811 and the outlet end 812 are both provided with a clamping portion 83, in this embodiment, as shown in fig. 3, the clamping portion 83 is a protrusion with a right triangle cross section, and forms a conical surface with a small diameter close to the end surface of the heat exchange tube 81 and a large diameter far away from the end surface of the heat exchange tube 81, so as to install a hose, and after the hose is sleeved in the clamping portion 83 of the heat exchange tube 81, the hose is tightly matched with the heat exchange tube 81 by elastic deformation of the hose, thereby improving the sealing reliability. Of course, the cross-sectional shape of the fastening portion 83 may also be a simple deformation such as a rectangle or a hemisphere, which also can improve the sealing reliability, and is not described herein again.

In some preferred embodiments, the outlet end 812 of the heat exchange tube 81 is arranged near the pressure stabilizing valve 4 of the tank body 1, and the inlet end 811 of the heat exchange tube 81 is arranged far from the pressure stabilizing valve 4 of the tank body 1, which aims to gradually reduce the temperature of the high-temperature fluid during the heat exchange process when the high-temperature fluid is introduced into the heat exchange tube 81, and correspondingly, the temperature of the ammonia gas around the inlet end 811 to the ammonia gas around the outlet end 812 is gradually reduced, that is, the temperature of the ammonia gas around the inlet end 811 is higher than that of the ammonia gas around the outlet end 812, so as to ensure that the ammonia gas around the inlet end 811 is always gaseous as long as the temperature of the high-temperature fluid introduced into the heat exchange tube 81 is not liquefied into the ammonia gas near the outlet end 812, and further ensure the pressure of the outputted ammonia gas to be stable.

In the background art, it is mentioned that the hydrogen production by ammonia decomposition can be applied to a vehicle-mounted hydrogen internal combustion engine, and the hydrogen internal combustion engine is used for combusting hydrogen in the internal combustion engine to generate power to push a vehicle to move forward, so that cooling liquid in a heat dissipation system of the internal combustion engine can be introduced into a heat exchange pipe 81, and the heat of the cooling liquid is transferred to ammonia gas and then flows back to the heat dissipation system of the internal combustion engine, thereby achieving the purpose of efficiently utilizing heat energy. In addition, the heat exchange pipe 81 may be connected to a cooling system of the hydrogen fuel cell stack.

In order to further control the air pressure precision of the output ammonia gas, in the application, as shown in fig. 4, a set of high-precision pressure stabilizing control system is established by arranging a pressure sensor 7, a pressure stabilizing valve 4 and a metering valve 6 in a tank body 1 and realizing electrical linkage between the pressure sensor 7, the pressure stabilizing valve 4 and the metering valve 6 by a controller outside the tank body 1. Specifically, in terms of physical structure, fixing seats of the pressure sensor 7, the pressure maintaining valve 4 and the outlet connector 5, namely a pressure sensor fixing seat 13, a pressure maintaining valve fixing seat 11 and an outlet connector fixing seat 12 are arranged in the tank body 1, the pressure maintaining valve fixing seat 11 is taken as an example, a flange 111 is arranged on the outer peripheral surface of the pressure maintaining valve fixing seat 11, the flange 111 is clamped on the inner wall of the tank body 1, the pressure maintaining valve 4 is connected with the pressure maintaining valve fixing seat 11 through threads to enable the pressure maintaining valve to be fastened, and similarly, the other two fixing seats are provided with the flanges 111 and are also fastened in the same mode. The pipeline 2 is connected to the metering valve 6 after being sleeved on the outlet joint 5. It should be noted that the pressure sensor 7 can be arranged at the top of the tank body 1, so as to avoid interference of a small amount of liquid ammonia or impurities to the sensor under special conditions; in the aspect of electrical control, a power supply supplies power to a controller, the controller is respectively connected to the pressure sensor 7, the pressure stabilizing valve 4 and the metering valve 6 through signal lines, and the controller can adopt any one of a single chip microcomputer, an embedded system and a PLC (programmable logic controller) to realize the control of the sensors and the execution elements.

The electromagnetic valve has the advantages of simple structure, high reliability, convenient operation, long service life, strong anti-interference capability, high control precision, easy realization of self-control and intellectualization and the like, and is widely applied in the industrial field. Therefore, the pressure maintaining valve 4 and the metering valve 6 both adopt solenoid valves. Wherein, the metering valve 6 is used for counting the output flow of the ammonia gas. In this embodiment, the surge damping valve 4 is of a closed-loop control electrodynamic type, as shown in fig. 2, and includes a valve body 41, a coil 42 and a valve core 43, the valve body 41 is provided with an air inlet 411 and an air outlet 412, the air inlet 411 is in threaded connection with an inlet joint 3, the pipeline 2 is sleeved on the inlet joint 3, and the air outlet 412 is communicated with the inside of the tank 1. When the pressure stabilizing valve 4 works, the controller collects pressure data detected by the pressure sensor 7 in real time, compares the pressure data with a preset value, and sends an electric signal to the pressure stabilizing valve 4, and the coil 42 generates a magnetic field to actuate the valve core 43, so that the opening degrees of the valve core 43 and the valve body 41 are controlled. If the current pressure data is smaller than the preset value, controlling the pressure stabilizing valve 4 to increase the opening; otherwise, the opening degree of the pressure maintaining valve 4 is controlled to be reduced. Through the high-precision pressure stabilizing control system, the pressure range of the output ammonia gas can be controlled to be 0.02-2.5 Mpa, the pressure stabilizing precision is less than 0.5%, and the pressure can be kept stable under various temperatures and various working conditions.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

What has been described above is merely some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (10)

1. The utility model provides an ammonia pressure stabilizer, includes jar body (1), jar body (1) is provided with pressure sensor (7) and surge damping valve (4), jar body (1) is worn to be equipped with pipeline (2) that carry the ammonia, the one end intercommunication of pipeline (2) is to surge damping valve (4), its characterized in that still includes:

the heating device (8) is in contact with the ammonia gas in the tank body (1), and the heating device (8) is used for changing the temperature of the ammonia gas in the tank body (1) so as to adjust the pressure of the ammonia gas in the tank body (1).

2. An ammonia pressure stabilizer according to claim 1, characterized by further comprising a controller electrically connected to said pressure sensor (7) and said pressure stabilizer valve (4), respectively.

3. The ammonia pressure stabilizer according to claim 2, wherein the heating device (8) is a finned tube heat exchanger, the heating device (8) comprises a heat exchange tube (81) and fins (82), the heat exchange tube (81) is cylindrical, the heat exchange tube (81) is inserted into the tank body (1), a plurality of the fins (82) are mounted on the outer surface of the heat exchange tube (81), and the fins (82) are arranged at equal intervals along the length direction of the heat exchange tube (81).

4. An ammonia pressure stabilizer according to claim 3, characterized in that the outlet end (812) of the heat exchange tube (81) is close to the pressure stabilizer valve (4), and the inlet end (811) of the heat exchange tube (81) is far from the pressure stabilizer valve (4).

5. An ammonia pressure stabilizer according to claim 1, characterized in that said heating means (8) are arranged at the bottom of the tank (1).

6. The ammonia pressure stabilizing device according to claim 1, wherein the pressure stabilizing valve (4) is installed in the middle of the tank body (1), a pressure stabilizing valve fixing seat (11) is installed in the tank body (1), the pressure stabilizing valve (4) is connected with the pressure stabilizing valve fixing seat (11), an inlet joint (3) is installed on the pressure stabilizing valve (4), and one end of the pipeline (2) is connected with the pressure stabilizing valve (4) after being sleeved on the inlet joint (3).

7. An ammonia pressure stabilizer according to claim 1, characterized in that said pressure stabilizer valve (4) is a solenoid valve.

8. The ammonia pressure stabilizer according to claim 1, further comprising an outlet connector (5) and a metering valve (6), wherein an outlet connector holder (12) is installed in the tank body (1), the outlet connector (5) is connected with the outlet connector holder (12), and the other end of the pipeline (2) is sequentially communicated with the outlet connector (5) and the metering valve (6).

9. An ammonia pressure stabilizer according to claim 1, characterized in that said pressure sensor (7) is arranged at the top of said tank (1).

10. An ammonia pressure stabilizer according to claim 1, characterized in that the heating device (8) comprises an electric heater or a heat exchanger.

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