CN209764395U - High-temperature-resistant detection device for urea nozzle - Google Patents
High-temperature-resistant detection device for urea nozzle Download PDFInfo
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- CN209764395U CN209764395U CN201920414079.0U CN201920414079U CN209764395U CN 209764395 U CN209764395 U CN 209764395U CN 201920414079 U CN201920414079 U CN 201920414079U CN 209764395 U CN209764395 U CN 209764395U
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Abstract
The embodiment of the utility model provides a high temperature resistant detection device of urea nozzle, first controller to the data of second controller output sign urea solution injection quantity, the data transmission to the urea pump of second controller with sign urea solution injection quantity, the urea pump extraction and the data of sign urea solution injection quantity and the urea solution that corresponds transmit to the urea nozzle, the urea nozzle sprays urea solution to the high temperature cabinet that keeps at first assigned temperature. The utility model discloses can detect the high temperature resistance performance of urea nozzle through lasting above-mentioned device a period. Furthermore, the utility model directly informs the urea pump of the amount of urea solution to be sprayed, and simulates the temperature of tail gas generated by the engine by using the high temperature box, so that the high temperature resistant detection device of the urea nozzle in the embodiment of the utility model does not need the engine, thereby saving the cost; and the urea solution can be reserved for recycling, so that the cost is saved.
Description
Technical Field
the utility model relates to a diesel engine tail gas aftertreatment technical field, more specifically relate to a high temperature resistant detection device of urea nozzle.
background
With the continuous improvement of the exhaust emission standard in the vehicle industry, the design requirement on the vehicle exhaust aftertreatment system is higher and higher. Currently, the exhaust gas emitted from vehicles may be treated using an SCR (selective Catalytic Reduction) exhaust gas after-treatment system. The SCR tail gas aftertreatment system comprises a urea nozzle, and nitrogen oxides in tail gas discharged by a vehicle can be catalytically reduced into nitrogen and water at a certain temperature by using a urea solution sprayed by the urea nozzle.
Because the urea solution sprayed by the urea nozzle is easy to form crystals in a low-temperature environment, the crystals increase to a certain degree and block an exhaust pipeline of an engine, so that the performance of the whole engine is deteriorated. To decompose the crystals, the urea nozzle needs to be operated in a high temperature environment (e.g., around 300 ℃) for a long time, but the high temperature environment is prone to mechanical failure of the urea nozzle, such as in the absence of actuation, resulting in uncontrolled urea nozzle. Therefore, the high-temperature durability of the urea nozzle needs to be checked before the urea nozzle is put into use.
In summary, there is a need in the art for a device for detecting the high temperature resistance of a urea nozzle.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a high temperature resistant detection device of urea nozzle can effectively solve the too high problem of use cost that the high temperature resistant performance that needs the engine to detect the urea nozzle leads to.
in order to achieve the above object, the utility model provides a following technical scheme:
A high temperature resistant detection device of a urea nozzle comprises:
the first controller comprises a first control port, and the first control port is connected with the data input end of the second controller; the first controller outputs data representing the injection amount of the urea solution to the second controller through the first control port;
The second controller comprises a data output end and the data input end, and the data output end is connected with the data input end of the urea pump; the second controller transmits data representing the injection amount of the urea solution to the urea pump through the data output end;
The urea pump comprises a first urea outlet, the first urea outlet is connected with a first input end of the urea nozzle, and the urea pump transmits the extracted urea solution corresponding to the data representing the injection amount of the urea solution to the urea nozzle through the first urea outlet;
A first output end of the urea nozzle penetrates through a first surface of the high-temperature box, and the first surface of the high-temperature box is a surface close to the urea nozzle; the urea nozzle sprays urea solution to the high-temperature box through the first output end;
The high temperature box is kept at a first designated temperature.
In an alternative embodiment of the method of the invention,
The first controller further comprises a second control port and a third control port;
The high-temperature box further comprises:
at least one heating wire disposed inside the high temperature cabinet, the first controller controlling the at least one heating wire to heat through the second control port such that the high temperature cabinet is maintained at the first designated temperature;
maintaining the hot box at the first specified temperature;
A temperature sensor connected to a third control port of the first controller; the temperature sensor transmits the current temperature of the high temperature tank to the first controller through the third control port.
in an alternative embodiment of the method of the invention,
the urea nozzle further comprises a second input end and a second output end;
The high temperature resistant detection device of urea nozzle still includes:
A first circulation tank including a coolant inlet and a coolant outlet, the first circulation tank storing a coolant having a designated initial temperature; the cooling liquid outlet is connected with the second input end through a first pump; the cooling liquid inlet is connected with the second output end, so that cooling liquid flows through the urea nozzle and then flows back to the first circulation box through the second output end;
the first pump can pump the cooling liquid stored in the first circulation box and transmit the cooling liquid to the second input end.
In an alternative embodiment of the method of the invention,
The first controller further comprises a fourth control port;
the high temperature resistant detection device of urea nozzle still includes:
the flow sensor is arranged between the second output end of the urea nozzle and the cooling liquid inlet of the first circulating box, and the flow control end of the flow sensor is connected with the fourth control port of the first controller; the flow sensor transmits the current flow of the cooling liquid to the first controller through a flow control end and a fourth control port.
In an alternative embodiment of the method of the invention,
the first pump further comprises a first pumping control end;
the first controller further comprises a fifth control port; the first extraction control end is connected with the fifth control port; the first controller transmits data indicative of the coolant draw to the first pump through the fifth control port.
In an alternative embodiment of the method of the invention,
the urea pump further comprises a second urea outlet and a urea inlet;
The high temperature tank comprises a first outlet;
the high temperature resistant detection device of urea nozzle still includes:
a second circulation tank including a first solution inlet, a second solution inlet, and a solution outlet, the second circulation tank being capable of storing the urea solution drawn from the high temperature tank; the first solution inlet is connected with a first outlet of the high-temperature box through a second pump, the second solution inlet is connected with the second urea outlet, and the solution outlet is connected with the urea inlet, so that the urea solution stored in the second circulation box can be transmitted to the urea pump;
The second pump can pump the urea solution sprayed to the high-temperature tank by the urea nozzle and transmit the urea solution to the second circulation tank through the first solution inlet.
In an alternative embodiment of the method of the invention,
the second circulation box further includes:
The cooling device is arranged in the second circulation box and comprises a cooling input end and a cooling output end, and the cooling output end is arranged in the second circulation box; the first solution inlet is a cooling input end of the cooling device, so that the urea solution pumped by the second pump flows into the second circulation box through the cooling output end after the cooling device is cooled to a second specified temperature.
And/or the presence of a gas in the gas,
before the second circulation box, the urea nozzle high temperature resistance detection device further comprises:
And the cooling device is arranged between the second circulation box and the second pump, so that the urea solution pumped by the second pump flows into the second circulation box through the first solution inlet after flowing through the cooling device.
in an alternative embodiment of the method of the invention,
The first controller further comprises a sixth control port;
the second circulation box further includes:
the liquid level sensor is connected with the sixth control port of the first controller; the level sensor transmits a current level of urea solution to the first controller through the sixth control port.
In an alternative embodiment of the method of the invention,
the second pump further comprises a second pumping control end;
the first controller further comprises a seventh control port; the second extraction control end is connected with the seventh control port; the first controller transmits data indicative of an amount of urea solution drawn to the second pump through the seventh control port.
In an alternative embodiment, the second controller comprises:
a dose control unit DCU, and/or an electronic control unit ECU.
According to the technical scheme, the utility model provides a high temperature resistant detection device of urea nozzle, including first controller, second controller, urea pump, urea nozzle and high-temperature cabinet; the first controller can be through the data of first control port to the second controller output sign urea solution injection volume, the second controller can be through data output end with the data transmission to the urea pump of sign urea solution injection volume, then the urea pump can be based on the data of sign urea solution injection volume, through the urea solution that first urea export extraction corresponds with this data and transmit to the urea nozzle, and then the urea nozzle can be through first output with urea solution injection to keeping in the high temperature box of first appointed temperature, thereby the high temperature resistant device of detection urea nozzle has been obtained. The utility model discloses can detect the high temperature resistance performance of urea nozzle through lasting above-mentioned device a period.
furthermore, the utility model discloses because can inform the urea pump directly and need extract the urea solution of how much urea solution injection quantity, need not to obtain the urea solution of how much urea solution injection quantity that the urea pump need extract based on the tail gas volume that the engine produced, and produce the temperature of tail gas with high temperature box simulation engine, thereby make the high temperature resistant detection device of urea nozzle in the embodiment of the utility model not need the engine, practiced thrift the cost; and because no vehicle tail gas exists, the urea solution can be reserved and recycled, and the cost is saved.
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a high temperature resistant detection device for a urea nozzle according to an embodiment of the present invention;
FIG. 2 is a schematic view of a prior art urea nozzle attached to a vehicle exhaust stack;
Fig. 3 is a schematic view of a second high temperature resistant detection device for a urea nozzle provided in an embodiment of the present invention;
FIG. 4 is a schematic view of a third high temperature resistant detection device for a urea nozzle provided in an embodiment of the present invention;
Fig. 5 is a schematic view of a fourth high temperature resistant detection device for a urea nozzle provided in an embodiment of the present invention;
Fig. 6 is a schematic view of a fifth high temperature resistant detection device for a urea nozzle provided in an embodiment of the present invention;
fig. 7 is a schematic view of a sixth high temperature resistant detection device for a urea nozzle provided in an embodiment of the present invention;
Fig. 8 is a schematic view of a seventh high temperature resistant detection device for a urea nozzle provided in an embodiment of the present invention;
Fig. 9 is a schematic view of an eighth high temperature resistant detection device for a urea nozzle according to an embodiment of the present invention;
Fig. 10 is a schematic view of a ninth high temperature resistant detection device for a urea nozzle provided by an embodiment of the present invention.
Detailed Description
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses can provide multiple urea nozzle high temperature resistant detection device, introduce respectively next.
Please refer to fig. 1, which is a schematic diagram of a high temperature resistant detection apparatus for a urea nozzle according to an embodiment of the present invention. The utility model provides a high temperature resistant detection device of urea nozzle can include first controller 11, second controller 12, urea pump 13, urea nozzle 14 and high temperature cabinet 15.
Referring to fig. 1, the first controller 11 includes a first control port 111, and the first control port 111 is connected to a data input terminal 121 of the second controller 12; the first controller 11 outputs data representing the urea solution injection amount to the second controller 12 through the first control port 111.
Optionally, the first controller 11 may send the first control instruction to the second controller 12 through the first control port 111, where the first control instruction may include finished vehicle data obtained in advance by the first controller 11, that is, the first controller 11 may obtain finished vehicle data in advance, and transmit the obtained finished vehicle data to the second controller 12 through the first control port 111.
alternatively, the pre-obtained vehicle data may include data indicative of an amount of urea solution injected. Optionally, there are various data indicative of the amount of urea solution injected, for example, the amount of exhaust emitted by a vehicle, or the amount of urea solution injected; the expression form of the data representing the urea solution injection quantity can be as follows: a digital signal, such as a PWM (Pulse Width Modulation) signal, or an analog signal.
Alternatively, the data representing the urea solution injection amount transmitted from the first controller 11 to the second controller 12 may be the same as or different from the data representing the urea solution injection amount transmitted from the second controller 12 to the urea pump 13. For example, the data indicating the urea solution injection amount transmitted from the first controller 11 to the second controller 12 is an analog signal, and the data indicating the urea solution injection amount transmitted from the second controller 12 to the urea pump 13 is a digital signal.
Optionally, whole car data includes the tail gas that the engine produced and the corresponding urea solution jet volume's that corresponds corresponding relation, the embodiment of the utility model provides an in, first controller 11 can obtain the data of sign urea solution jet volume based on this corresponding relation.
Optionally, the pre-obtained vehicle data may be stored in the terminal device 10, and the terminal device 10 controls the first controller 11 to transmit the vehicle data; alternatively, the terminal device may be an electronic device such as a desktop, a mobile terminal (e.g., a smart phone), an ipad, or the like.
Referring to fig. 1, the second controller 12 includes a data output terminal 122 connected to a data input terminal 131 of the urea pump, and the data input terminal 121; the second controller 12 transmits data (e.g., PWM signal) indicative of the injected amount of urea solution to the urea pump 13 via the data output 122.
Referring to fig. 1, the urea pump 13 includes a first urea outlet 132, the first urea outlet 132 is connected to a first input 141 of the urea nozzle 14, and the urea pump 14 transmits the extracted urea solution corresponding to the data representing the injection amount of the urea solution to the urea nozzle 14 through the first urea outlet 132.
Optionally, the urea pump 13 can store a urea solution that can undergo a catalytic reduction reaction with the vehicle exhaust gases to reduce the vehicle exhaust gases to nitrogen and water.
alternatively, if the urea pump 13 receives the data indicating the urea solution injection amount transmitted from the second controller 12, for example, the PWM signal, the urea solution corresponding to the data may be drawn through the first urea outlet 132 and transmitted to the urea nozzle 14 based on the data indicating the urea solution injection amount.
Referring to fig. 1, the first output end 142 of the urea nozzle 14 penetrates through a first surface of the high temperature box 15, where the first surface of the high temperature box 15 is a surface close to the urea nozzle 14; the urea nozzle 14 injects urea solution to the hot box 15 through the first output end 142.
As shown in fig. 1, the location of the first surface 140 of the hot box.
alternatively, the urea nozzle 14 may be connected to the high temperature tank 15 in the following manner: the first output end 142 of the urea nozzle 14 penetrates a first surface of the high temperature chamber 15, which is a surface close to the urea nozzle 14. The "penetration" may be that the part of the first output end 142 of the urea nozzle 14 is located inside the high temperature tank 15, and the part of the urea nozzle 14 except the first output end 142 is located outside the high temperature tank 15. The connection mode of the urea nozzle 14 and the high temperature box 15 in the embodiment of the present application may be the same as the connection mode of the urea nozzle 14 and the exhaust pipe 2 of the vehicle in the prior art, and the specific connection mode may be referred to in fig. 2.
Optionally, the embodiment of the present application further provides another connection manner of the urea nozzle 14 and the high temperature tank 15, that is, the first output end 142 of the urea nozzle 14 is seamlessly connected to the first inlet of the first surface of the high temperature tank 15. Here, the first surface of the high temperature chamber 15 is a surface closest to the urea nozzle 14.
alternatively, the urea nozzle 14 can inject the corresponding urea solution into the high temperature tank 15 through the first output terminal 142 based on how much urea solution is drawn from the urea pump 13. It is understood that the injection amount of the urea solution from the urea injection nozzle 14 into the high temperature tank 15 is smaller than or equal to the extraction amount of the urea solution extracted from the urea pump 13; if the urea solution produces crystals in the urea nozzle 14, the injection amount of the urea solution from the urea nozzle 14 into the high temperature tank 15 is smaller than the extraction amount of the urea solution from the urea pump 13.
Alternatively, the hot box 15 may simulate the temperature of exhaust gas generated by the engine. It will be appreciated that the temperature of the exhaust gases produced by the engine is generally high and therefore, in the present invention, the high temperature tank 15 can be maintained at a first designated temperature.
the first specified temperature may be determined based on the temperature of exhaust gas generated by the engine in an actual application scenario; optionally, the first designated temperature in the embodiment of the present invention may be 500 ℃.
The utility model provides a high temperature resistant detection device of a urea nozzle 14, which comprises a first controller 11, a second controller 12, a urea pump 13, a urea nozzle 14 and a high temperature box 15; the first controller 11 may output the data representing the urea solution injection amount to the second controller 12 through the first control port 111, and the second controller 12 may transmit the data representing the urea solution injection amount to the urea pump 13 through the data output terminal 122, so that the urea pump 13 may draw the urea solution corresponding to the data through the first urea outlet 132 and transmit the urea solution to the urea nozzle 14 based on the data representing the urea solution injection amount, and the urea nozzle 14 may inject the urea solution into the high temperature tank 15 maintained at the first designated temperature through the first output terminal 142. The utility model discloses can detect the high temperature resistance performance of urea nozzle 14 through lasting above-mentioned device a period.
Further, the utility model discloses because can inform urea pump 13 directly and need extract the urea solution of how much urea solution injection quantity, need not to obtain the urea solution of how much urea solution injection quantity that urea pump 13 need extract based on the tail gas volume that the engine produced, and the temperature that produces tail gas with high-temperature cabinet 15 simulation engine, thereby make the high temperature resistant detection device of urea nozzle 14 in the embodiment of the utility model need not the engine, practiced thrift the cost; and because no vehicle tail gas exists, the urea solution can be reserved and recycled, and the cost is saved.
Refer to fig. 3, is the high temperature resistant detection device schematic diagram of the second kind of urea nozzle that the embodiment of the utility model provides.
in an alternative embodiment, the first controller 11 may further include a second control port 112 and a third control port 113.
Alternatively, it has been described above that the first controller 11 may obtain the vehicle data in advance, and the vehicle data may include the first specified temperature in addition to the data representing the urea solution injection amount, and the first specified temperature may be determined based on the temperature of the exhaust gas generated by the engine in actual application; alternatively, the first designated temperature may be 500 ℃.
Alternatively, considering that the temperature in the high temperature box 15 may change due to low temperature of the external environment of the high temperature box 15, the embodiment of the present invention may provide at least one heating wire 31 inside the high temperature box 15, and the first controller 11 may control the at least one heating wire 31 to heat through the second control port 112 included therein, so as to ensure that the high temperature box 15 is always kept at the first designated temperature.
Alternatively, in consideration of the fact that the first controller 11 cannot accurately determine whether the current temperature of the high temperature box 15 is at the first designated temperature, the embodiment of the present invention may further provide a temperature sensor 32 at the high temperature box 15, and the temperature sensor 32 may be connected to the third control port 113 of the first controller 11. Here, the current temperature refers to the temperature in the high temperature compartment 15 monitored by the temperature sensor 32 at the current time; it is understood that the current temperature obtained by the first controller 11 from the temperature sensor 32 at different times may be different, and if the heating wire 31 is heated properly, the current temperature obtained by the first controller 11 from the temperature sensor 32 at different times may be the same.
Optionally, the temperature sensor 32 can monitor the current temperature of the high temperature box 15 in real time, so that if the current temperature of the high temperature box 15 is different from the first designated temperature, the first controller 11 can control the heating wire 31 to heat through the second control port 112 until the high temperature box 15 reaches the first designated temperature, and the first controller 11 stops controlling the heating wire 31 to heat.
refer to fig. 4, is the third urea nozzle high temperature resistance detection device schematic diagram that the embodiment of the utility model provides.
In an alternative embodiment, the urea nozzle 14 may further include a second input 143 and a second output 144 in addition to the first input 141 and the first output 142.
It is optionally taken into account that the temperature in the high temperature tank 15 may be transmitted to the urea nozzle 14 through the first output 142 of the urea nozzle 14, resulting in a temperature of the urea nozzle 14 that is too high and thus a possible malfunction of the urea nozzle 14. Based on this, the embodiment of the present invention may add a first circulation tank 41 capable of reducing the temperature of the urea nozzle 14 to the urea nozzle 14, where the first circulation tank 41 stores therein a coolant, and the coolant is a liquid having a specified initial temperature.
The above-mentioned appointed initial temperature means that the coolant liquid is when the device in the embodiment of the present invention begins to normally detect the high temperature resistance of the urea nozzle 14, the appointed temperature that the coolant liquid has, and the moment of "beginning normal detection" here means that the high temperature box 15 reaches the first appointed temperature and the first circulation box 41 reaches the appointed initial temperature, and, the initial moment of beginning to detect the high temperature resistance of the urea nozzle.
alternatively, it has been described above that the first controller 11 may obtain the vehicle data in advance, and the vehicle data may include the specified initial temperature in addition to the data representing the urea solution injection amount and the first specified temperature of the hot box 15; alternatively, the above-specified initial temperature may be between 70 ℃ and 80 ℃.
Alternatively, the first circulation tank 41 may include a cooling liquid outlet 411 and a cooling liquid inlet 412, wherein the cooling liquid outlet 411 is connected to the second input terminal 143, and the cooling liquid inlet 412 is connected to the second output terminal 144. By the above connection, it is realized that the cooling liquid can flow out from the cooling liquid outlet 411 of the first circulation tank 41 and flow through the urea nozzle 14 via the second input end of the urea nozzle 14, and flow out from the second output end of the urea nozzle 14 and flow into the first circulation tank 41 via the cooling liquid inlet 412, so as to realize circulation of the cooling liquid.
optionally, the coolant may be a coolant for cooling the vehicle engine, or may be water. It is understood that if the cooling liquid is water, the temperature of the urea nozzle 14 is usually higher than the boiling point (100 ℃) of water, so that even if the cooling liquid reaches the boiling point, the cooling effect of the urea nozzle 14 can be achieved.
alternatively, considering that the cooling liquid may not automatically circulate in the urea injector 14 and the first circulation tank 41, the embodiment of the present invention may further add a first pump 42, and the first pump 42 can draw the cooling liquid from the first circulation tank 41 and transmit the cooling liquid to the second input 143 of the urea injector 14. Alternatively, the first pump 42 may be located between the coolant outlet 411 of the first circulation tank 41 and the second input 143 of the urea nozzle 14, i.e., the coolant outlet 411 is connected to the second input 143 of the urea nozzle 14 through the first pump 42.
It should be noted that the cooling liquid in the embodiment of the present invention does not directly contact with the urea solution in the urea nozzle 14, that is, the cooling liquid and the urea solution exist in two different areas in the urea nozzle 14.
optionally, the embodiment of the present invention may further include at least one heating wire (not shown in fig. 4) disposed in the first circulation box 41, and the first controller 11 may further control the heating of the at least one heating wire through an eighth control port included therein, so as to ensure that the first circulation box 41 reaches the above-mentioned specified initial temperature.
optionally, a temperature sensor (not shown in fig. 4) may be provided in the first circulation tank 41, and the temperature sensor may be connected to a ninth control port included in the first controller 11, so that the first controller 11 can obtain the current temperature in the first circulation tank from the temperature sensor. If the temperature does not reach the designated initial temperature, the first controller 11 may heat at least one heating wire in the first circulation tank 41 through the eighth control port until the designated initial temperature is reached.
Refer to fig. 5, is a schematic diagram of a fourth high temperature resistance detection device for a urea nozzle provided by an embodiment of the present invention.
in an alternative embodiment, the first controller 11 may further include a fourth control port 114.
optionally, it has been described above that the first controller 11 may obtain vehicle data in advance, and the vehicle data may include a specified flow rate of the cooling liquid in addition to the data representing the urea solution injection amount, the first specified temperature of the high temperature tank 15, and the specified initial temperature of the cooling liquid, and optionally, the specified flow rate of the cooling liquid is to be able to maintain the temperature of the urea nozzle 14 at the specified nozzle temperature; alternatively, the prescribed nozzle temperature may be between 200 ℃ and 300 ℃. It will be appreciated that although there is coolant to cool the urea nozzle, the temperature of the urea nozzle may be higher than the specified nozzle temperature.
optionally, a flow sensor 51 may be provided between the second output 144 of the urea nozzle 14 and the coolant inlet 412 of the first circulation tank 41 to monitor the current flow rate of the coolant circulating in the urea nozzle 14 and the first circulation tank 41. Wherein the flow control end 511 of the flow sensor 51 is connected with the fourth control port 114 of the first controller 11. Here, the current flow rate refers to a flow rate monitored by the flow rate sensor 51 at the current time; it is understood that, alternatively, the current flow rate obtained by the first controller 11 from the flow sensor at different times may be different, and, alternatively, the current flow rate obtained by the first controller 11 from the flow sensor at different times may be the same.
Alternatively, if the current flow rate of the cooling fluid is different from the above-specified flow rate, the temperature reduction process of the urea nozzle 14 may be affected. Based on this, the flow sensor 51 can transmit the current flow rate of the cooling liquid to the first controller 11 through the flow control terminal 511 and the fourth control port 114, so that the first controller 11 can obtain the current flow rate of the cooling liquid in real time.
Refer to fig. 6, is the fifth urea nozzle high temperature resistance detection device sketch map that the embodiment of the utility model provides.
In an alternative embodiment, the first controller 11 may further include a fifth control port 115.
Optionally, the first pump 42 may include a first draw control port 421, and the first draw control port 421 may be connected to the fifth control port 115.
the embodiment of the utility model provides a first controller 11 can be based on its current flow of coolant liquid that obtains, through the data of fifth control port 115 to first pump 42 transmission sign coolant liquid extraction volume to first pump 42 can be based on the data of the sign coolant liquid extraction volume that obtains, and the coolant liquid extraction volume that corresponds with this data is extracted from first circulation case 41, cools off urea nozzle 14 through the coolant liquid that this coolant liquid extraction volume corresponds.
alternatively, it has been described above that the flow sensor 51 may transmit the current flow rate of the cooling liquid to the first controller 11 through the flow control terminal 511 and the fourth control port 114, or the first controller 11 may monitor the current flow rate of the cooling liquid detected by the flow sensor 51 through the fourth control port 114. If the current flow rate of the cooling liquid detected by the first controller 11 is different from the specified flow rate of the cooling liquid, the first pump 42 may be controlled by the first extraction control end 421 to increase or decrease the extraction amount of the cooling liquid, so that the extracted cooling liquid reaches the specified flow rate, the process of cooling the urea nozzle is not affected, and the probability of the urea nozzle 14 failing can be reduced.
Alternatively, the specified flow rate may be altered as the time to test the high temperature resistance of the urea nozzle increases, e.g., the specified flow rate may be increasing over time. Alternatively, the specified flow rate may not change as the time to test the high temperature resistance of the urea nozzle increases.
Refer to fig. 7, is the high temperature resistant detection device schematic diagram of the sixth urea nozzle that the embodiment of the utility model provides.
In an alternative embodiment, the urea pump 13 may further include a second urea outlet 133 and a urea inlet 134 in addition to the first urea outlet 132; the hot box 15 may include a first outlet 152 in addition to a first inlet (i.e., the port that receives the first output 142 of the urea injector).
optionally, because the embodiment of the utility model provides a 14 high temperature resistant detection device of urea nozzle simulates the temperature that the engine produced tail gas with high temperature box 15, consequently does not need the tail gas that the engine produced, and urea solution can be kept. In order to realize the recycling of the urea solution, the present embodiment may further add a second circulation tank 71 on the basis of the above embodiment, and the second circulation tank 71 can store the urea solution extracted from the high temperature tank 15.
Optionally, it has been described above that the first controller 11 may obtain the vehicle data in advance, and the vehicle data may further include a urea solution withdrawal amount, which is a withdrawal amount of the urea solution that needs to be withdrawn from the high-temperature tank 15 to the second circulation tank 71, in addition to the data representing the urea solution injection amount, the first specified temperature of the high-temperature tank 15, the specified initial temperature of the cooling liquid, and the specified flow rate of the cooling liquid; alternatively, the urea solution withdrawal amount can be determined according to the amount of exhaust gas generated by different types of engines.
alternatively, the second circulation tank 71 may include a first solution inlet 711, a second solution inlet 712, and a solution outlet 713. Wherein the first solution inlet 711 may be connected to the first outlet 152 of the high temperature tank 15, the second solution inlet 712 may be connected to the second urea outlet 133, and the solution outlet 713 may be connected to the urea inlet 134. By the above connection, it is achieved that the urea solution in the high temperature tank 15 can flow out from the first outlet 152 of the high temperature tank 15 and flow into the second circulation tank 71 through the first solution inlet 711, and flow out from the solution outlet 713 and flow into the urea pump 13 through the urea inlet 134, so that the urea solution stored in the second circulation tank 71 can be transferred to the urea pump 13, and thus the urea solution can be recycled.
Optionally, since the urea pump 13 may include the first urea outlet 132, the second urea outlet 133 and the urea inlet 134, in order to ensure that the pressure in the urea pump 13 is always constant, the second urea outlet 133 may be connected to the second solution inlet 712 of the second circulation tank 71 in this embodiment; it will be appreciated that if the pressure in the urea pump 13 is kept constant, the flow rate of the urea solution flowing from the urea inlet 134 into the urea pump 13 should be the same as the sum of the flow rate of the urea solution flowing from the first urea outlet 132 and the flow rate of the urea solution flowing from the second urea outlet 133.
Optionally, the embodiment of the present invention may further add a second pump 72 between the high temperature tank 15 and the second circulation tank 71, and the second pump 72 may suck back the urea solution from the high temperature tank 15 through the first outlet 152 of the high temperature tank 15 and transmit the urea solution to the first solution inlet 711 of the second circulation tank 71.
in an alternative embodiment, considering that the urea solution pumped by the second pump 72 from the high temperature tank 15 is at a higher temperature, the urea solution directly conveyed to the first solution inlet 711 of the second circulation tank 71 may cause the pressure in the second circulation tank 71 to increase, and the urea solution stored in the second circulation tank 71 at a higher temperature is conveyed to the urea pump 13 through the solution outlet, which may cause the pressure of the urea pump 13 to also increase, resulting in the failure of the urea pump 13.
Based on this, in one embodiment of the present invention, a cooling device may be added to the urea solution drawn from the high temperature tank 15. The embodiment of the utility model provides but not limited to following three kinds of increase modes.
the first method comprises the following steps: one or more cooling devices may be added inside the second circulation tank 71.
refer to fig. 8, is the high temperature resistant detection device schematic diagram of the seventh kind of urea nozzle that the embodiment of the utility model provides.
Optionally, the cooling means may comprise a cooling input and a cooling output. Since the cooling device is present inside the second circulation tank 71, the cooling output can be located inside the second circulation tank 71, so that the urea solution can flow into the second circulation tank 71 directly through the cooling output after the cooling device cools; the first solution inlet 711 mentioned in the above embodiment is the cooling input of the cooling device, and the urea solution pumped by the second pump from the high temperature tank 15 can directly flow into the cooling device through the cooling input (in this case, the urea solution does not flow into the second circulation tank 71).
Optionally, the urea solution may directly flow into the second circulation tank 71 through the cooling output end after being cooled by the cooling device; alternatively, after the urea solution flows into the cooling device, the urea solution may wait for a certain time until the temperature of the urea solution is reduced to the second designated temperature, and then flow into the second circulation tank 71 through the cooling output end. Here, the second specified temperature may be determined based on actual demand.
and the second method comprises the following steps: one or more cooling devices may be added between the second circulation tank 71 and the second pump 72.
Alternatively, the urea solution pumped from the high temperature tank 15 by the second pump 72 may be cooled by the cooling device and then flow into the second circulation tank 71 through the first solution inlet 711.
Alternatively, after the urea solution flows into the cooling device, a certain time may be waited until the temperature of the urea solution drops to a second designated temperature, and then the urea solution flows into the second circulation tank 71 through the first solution inlet 711.
And the third is that: one or more cooling devices may be added between the second circulation tank 71 and the second pump, while one or more cooling devices are added inside the second circulation tank 71.
Refer to fig. 9, is the eighth urea nozzle high temperature resistance detection device schematic diagram that the embodiment of the utility model provides.
In an alternative embodiment, the first controller 11 may further include a sixth control port 116.
Optionally, one or more level sensors 91 may be provided in the second circulation tank 71 to monitor the current level in the second circulation tank 71, which is capable of reflecting the pressure change in the second circulation tank 71. Wherein the level sensor 91 is connected to the sixth control port 116 of the first controller 11. Here, the current liquid level refers to a liquid level monitored by the liquid level sensor 91 at the current time; it is understood that the current liquid level obtained by the first controller 11 from the liquid level sensor 91 at different times may be different.
It will be appreciated that if the level of urea solution in the second circulation tank 71 decreases, indicating that the pressure in the second circulation tank 71 increases, the urea solution in the second circulation tank 71 will flow into the urea pump 13 through the urea inlet 134 of the urea pump 13, and the pressure of the urea pump 13 will increase, resulting in the malfunction of the urea pump 13.
based on this, optionally, the liquid level sensor 91 may transmit the current liquid level of the urea solution in the second circulation tank 71 to the first controller 11 through the sixth control port 116, so that the first controller 11 may obtain the current liquid level of the urea solution in the second circulation tank 71 in real time, and thus may monitor the pressure change condition of the second circulation tank 71 in real time.
referring to fig. 10, a schematic view of a ninth urea nozzle high temperature resistance detection device provided by the embodiment of the present invention.
In an alternative embodiment, the first controller 11 may further include a seventh control port 117.
optionally, the second pump 72 may further include a second pumping control port 721, and the second pumping control port 721 may be connected to the seventh control port 117.
Alternatively, it has been described above that the level sensor 91 is capable of monitoring the current level in the second circulation tank 71, which current level is capable of reflecting the pressure variations in the second circulation tank 71. The first controller 11 may transmit data indicative of the urea solution extraction amount to the second pump 72 through the seventh control port 117 based on the obtained current level of the urea solution, so that the second pump 72 may extract the urea solution extraction amount corresponding to the data from the high temperature tank 15 based on the obtained data indicative of the urea solution extraction amount, and the pressure in the second circulation tank 71 and the urea pump 13 is ensured to be kept constant by the urea solution corresponding to the urea solution extraction amount.
In an alternative embodiment, the second controller 12 may be a Dose Control Unit (DCU) and/or an Electronic Control Unit (ECU).
The DCU can know the state of the vehicle in real time through a sensor, and accurately control the work of each actuator (such as the urea pump 13) through software calculation in real time, so as to realize the accurate control of each system of the vehicle.
the ECU can ensure the least polluting emissions from the vehicle by receiving the signals from the sensors and letting the urea pump 13 inject the correct urea solution injection quantity at the correct urea solution injection point.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a high temperature resistant detection device of urea nozzle which characterized in that includes:
The first controller comprises a first control port, and the first control port is connected with the data input end of the second controller; the first controller outputs data representing the injection amount of the urea solution to the second controller through the first control port;
The second controller comprises a data output end and the data input end, and the data output end is connected with the data input end of the urea pump; the second controller transmits data representing the injection amount of the urea solution to the urea pump through the data output end;
the urea pump comprises a first urea outlet, the first urea outlet is connected with a first input end of the urea nozzle, and the urea pump transmits the extracted urea solution corresponding to the data representing the injection amount of the urea solution to the urea nozzle through the first urea outlet;
A first output end of the urea nozzle penetrates through a first surface of the high-temperature box, and the first surface of the high-temperature box is a surface close to the urea nozzle; the urea nozzle sprays urea solution to the high-temperature box through the first output end;
The high temperature box is kept at a first designated temperature.
2. The apparatus for detecting high temperature resistance of a urea nozzle according to claim 1,
The first controller further comprises a second control port and a third control port;
The high-temperature box further comprises:
At least one heating wire disposed inside the high temperature cabinet, the first controller controlling the at least one heating wire to heat through the second control port such that the high temperature cabinet is maintained at the first designated temperature;
A temperature sensor connected to a third control port of the first controller; the temperature sensor transmits the current temperature of the high temperature tank to the first controller through the third control port.
3. The apparatus for detecting high temperature resistance of a urea nozzle according to claim 2,
The urea nozzle further comprises a second input end and a second output end;
The high temperature resistant detection device of urea nozzle still includes:
a first circulation tank including a coolant inlet and a coolant outlet, the first circulation tank storing a coolant having a designated initial temperature; the cooling liquid outlet is connected with the second input end through a first pump; the cooling liquid inlet is connected with the second output end, so that cooling liquid flows through the urea nozzle and then flows back to the first circulation box through the second output end;
the first pump can pump the cooling liquid stored in the first circulation box and transmit the cooling liquid to the second input end.
4. The apparatus for detecting high temperature resistance of a urea nozzle according to claim 3,
the first controller further comprises a fourth control port;
The high temperature resistant detection device of urea nozzle still includes:
The flow sensor is arranged between the second output end of the urea nozzle and the cooling liquid inlet of the first circulating box, and the flow control end of the flow sensor is connected with the fourth control port of the first controller; the flow sensor transmits the current flow of the cooling liquid to the first controller through a flow control end and a fourth control port.
5. The apparatus for detecting high temperature resistance of a urea nozzle according to claim 4,
the first pump further comprises a first pumping control end;
The first controller further comprises a fifth control port; the first extraction control end is connected with the fifth control port; the first controller transmits data indicative of the coolant draw to the first pump through the fifth control port.
6. the apparatus for detecting high temperature resistance of a urea nozzle according to claim 2 or 5,
the urea pump further comprises a second urea outlet and a urea inlet;
The high temperature tank comprises a first outlet;
The high temperature resistant detection device of urea nozzle still includes:
a second circulation tank including a first solution inlet, a second solution inlet, and a solution outlet, the second circulation tank being capable of storing the urea solution drawn from the high temperature tank; the first solution inlet is connected with a first outlet of the high-temperature box through a second pump, the second solution inlet is connected with the second urea outlet, and the solution outlet is connected with the urea inlet, so that the urea solution stored in the second circulation box can be transmitted to the urea pump;
the second pump can pump the urea solution sprayed to the high-temperature tank by the urea nozzle and transmit the urea solution to the second circulation tank through the first solution inlet.
7. the apparatus for detecting high temperature resistance of a urea nozzle according to claim 6,
The second circulation box further includes:
the cooling device is arranged in the second circulation box and comprises a cooling input end and a cooling output end, and the cooling output end is arranged in the second circulation box; the first solution inlet is a cooling input end of the cooling device, so that the urea solution pumped by the second pump flows into the second circulation box through the cooling output end after the cooling device is cooled to a second specified temperature;
And/or the presence of a gas in the gas,
The high temperature resistant detection device of urea nozzle still includes:
And the cooling device is arranged between the second circulation box and the second pump, so that the urea solution pumped by the second pump flows into the second circulation box through the first solution inlet after flowing through the cooling device.
8. the apparatus for detecting high temperature resistance of a urea nozzle according to claim 7,
The first controller further comprises a sixth control port;
the second circulation box further includes:
The liquid level sensor is connected with the sixth control port of the first controller; the liquid level sensor transmits the current liquid level of the urea solution stored in the second circulation tank to the first controller through the sixth control port.
9. The apparatus for detecting high temperature resistance of a urea nozzle according to claim 6,
The second pump further comprises a second pumping control end;
The first controller further comprises a seventh control port; the second extraction control end is connected with the seventh control port; the first controller transmits data indicative of an amount of urea solution drawn to the second pump through the seventh control port.
10. The apparatus for detecting high temperature resistance of a urea nozzle according to claim 1, wherein the second controller comprises:
a dose control unit DCU, and/or an electronic control unit ECU.
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| CN201920414079.0U CN209764395U (en) | 2019-03-28 | 2019-03-28 | High-temperature-resistant detection device for urea nozzle |
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| CN201920414079.0U CN209764395U (en) | 2019-03-28 | 2019-03-28 | High-temperature-resistant detection device for urea nozzle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090371A (en) * | 2021-05-06 | 2021-07-09 | 无锡威孚力达催化净化器有限责任公司 | Portable SCR system urea nozzle testing arrangement and system |
| CN116735183A (en) * | 2023-08-14 | 2023-09-12 | 烟台盈德精密机械有限公司 | Urea injection experimental device |
-
2019
- 2019-03-28 CN CN201920414079.0U patent/CN209764395U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090371A (en) * | 2021-05-06 | 2021-07-09 | 无锡威孚力达催化净化器有限责任公司 | Portable SCR system urea nozzle testing arrangement and system |
| CN116735183A (en) * | 2023-08-14 | 2023-09-12 | 烟台盈德精密机械有限公司 | Urea injection experimental device |
| CN116735183B (en) * | 2023-08-14 | 2023-11-03 | 烟台盈德精密机械有限公司 | Urea injection experimental device |
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