CN212318122U - Heat conduction device, state parameter detection mechanism and urea box - Google Patents

Abstract

The invention discloses a heat conduction device, a state parameter detection mechanism and a urea box, wherein the heat conduction device comprises a pipe body which can be vertically arranged in a container, and a first pipeline and a second pipeline which are independent of each other are arranged in the pipe body; a flow guide hole communicated with the first pipeline is formed in the side wall below the pipe body; the second pipeline is provided with a liquid inlet and a liquid outlet for hot fluid to circularly enter and exit the second pipeline; based on the heat-conduction device of above-mentioned structure, the body still can provide comparatively steady detection ring border for detecting the sensor through first pipeline when providing heating energy for the solution in the container through the second pipeline, no matter fill solution or in vibrations environment, the volume and the vibrations energy of the formation bubble in the first pipeline are all smaller to obtain accurate detection data.

Description

Heat conduction device, state parameter detection mechanism and urea box

Technical Field

The invention relates to the technical field of urea boxes, in particular to a heat conduction device for a urea box, a state parameter detection mechanism for detecting the state of a solution in the urea box and the urea box.

Background

The urea box is a urea storage container, also called a urea tank, urea solution is filled in the urea box, and is mainly used for burning diesel trucks and buses. The urea incasement is generally equipped with the slim and long type heating pipe and the sensor group of spiral setting (including level sensor, temperature sensor etc.), among the prior art, because the heating area of heating pipe is little, consequently heating efficiency is ideal inadequately, in addition, when filling urea solution or have vibrations, urea case solution strikes the bubble that the box formed and causes the influence to sensor group easily for it is inaccurate to detect data.

Disclosure of Invention

One of the objectives of the present invention is to solve the above-mentioned technical problems and provide a heat conduction device that can heat the urea solution in the urea tank and at the same time can protect the sensor group in the urea tank.

Another object of the present invention is to provide a condition parameter detecting mechanism with a protection structure, which can reduce the impact of the solution impacting the bubble on the detecting sensor without additionally adding a shield.

The invention also aims to provide the urea box, which not only has higher heating efficiency, but also can play a role in protecting a sensor group in the urea box, and avoids the influence of the urea solution impacting bubbles on a detection sensor.

In order to achieve the above object, the present invention discloses a thermal conduction device based on a thermal fluid, which comprises a pipe body vertically installed in a container, wherein a first pipe and a second pipe which are independent of each other are arranged in the pipe body; a flow guide hole communicated with the first pipeline is formed in the side wall below the pipe body, and the solution in the container can enter the first pipeline through the flow guide hole; the second pipeline is provided with a liquid inlet and a liquid outlet for hot fluid to enter and exit, and at least part of side walls forming the second pipeline are part of the outer wall of the pipe body, so that the hot fluid circulating in the second pipeline can conduct heat to a solution outside the pipe body.

Compared with the prior art, the heat conduction device is a hollow pipe body, a first pipeline and a second pipeline are arranged in the hollow pipe body, when the heat conduction device is installed in a container, a circulating hot fluid is formed in the second pipeline through a liquid inlet and a liquid outlet, at least part of side wall forming the second pipeline is a part of the outer wall of the pipe body, and the circulating hot fluid in the second pipeline conducts heat to the solution in the container through the outer wall of the pipe body, so that the solution in the container is heated; meanwhile, as the side wall below the pipe body is provided with the diversion hole communicated with the first pipeline, the first pipeline is communicated with the container, the solution in the container flows into the first pipeline through the diversion hole, and the liquid level of the solution in the first pipeline is kept flush with the liquid level in the container, so that the real-time state parameters of the solution in the container can be obtained by detecting the state parameters of the solution in the first pipeline, such as the liquid level, the temperature and the like; therefore, based on the structure of above-mentioned body, the body still can provide comparatively steady detection ring border for detecting the sensor through first pipeline when providing heating energy for the solution in the container through the second pipeline, no matter fill solution or in vibrations environment, the volume and the vibrations energy of the formation bubble in the first pipeline are all less to obtain accurate detection data.

Preferably, an opening portion communicating with the first duct is provided above the pipe body.

Preferably, the opening is located above a liquid level line in the container when the tube is installed in the container.

Preferably, a flow guide channel is arranged in the second pipeline, and the hot fluid in the second pipeline can flow out of the liquid outlet after rising to a certain height through the flow guide channel.

Preferably, the inner wall of the second pipeline is the outer wall of the first pipeline, and the outer wall of the second pipeline is the outer wall of the pipe body.

Preferably, the diversion channel includes a partition plate extending upward from the bottom wall of the second pipeline, the partition plate divides the inner space of the second pipeline into at least two independent partitions, the liquid inlet and the liquid outlet are respectively located in two different partitions, an overflowing hole is arranged at a certain height above the partition plate, and hot fluid in the partition where the liquid inlet is located can finally flow into the partition where the liquid outlet is located through the overflowing hole after rising to a certain height.

Preferably, the number of the partition plates is multiple, the internal space of the second pipeline is divided into multiple independent partitions by the multiple partition plates, and the partition where the liquid outlet is located at the farthest end of the partition where the liquid inlet is located.

Preferably, the guide holes penetrate through two opposite sides of the pipe body.

Preferably, the container is a urea tank, a base is arranged at the bottom of the pipe body, a urea sucking port and a urea returning port are arranged on the base, the urea returning port is used for returning urea solution to the urea tank, and the urea sucking port is used for sucking the solution in the urea tank.

Preferably, inhale urea mouth with return urea mouth department still is provided with a filter screen, inhale urea mouth with return the urea mouth and be located in the filter screen.

Preferably, a notch extending to the base is formed in the side wall, close to the diversion hole, of the pipe body, and the urea suction port and the urea return port are located in the notch.

Preferably, a plurality of empty slots are arranged on the side wall of the top of the tube body at intervals.

The invention also discloses a state parameter detection mechanism with a protection structure, which comprises a sensor group and the thermal conduction device based on the thermal fluid, wherein the sensor group is arranged in the first pipeline at the bottom of the pipe body.

Preferably, the sensor group comprises an ultrasonic concentration detector, an ultrasonic liquid level detector and a temperature detector.

The invention also discloses a urea box which comprises a box body, wherein the state parameter detection mechanism is arranged in the box body.

Preferably, the tank body is provided with a filling port for filling urea solution, and the diversion hole deviates from the direct direction of the filling port.

Preferably, the top of box install with the locating piece that the body is connected, the locating piece is used for stabilizing the body.

Drawings

FIG. 1 is a schematic plan view of a urea tank according to an embodiment of the present invention.

FIG. 2 is a longitudinal cross-sectional view of one of the urea tanks in an embodiment of the invention.

FIG. 3 is another longitudinal cross-sectional view of a urea tank in an embodiment of the invention.

FIG. 4 is a schematic plan view of a heat conduction device having a sensor group mounted thereon according to an embodiment of the present invention.

FIG. 5 is a schematic plan view of a heat conduction device according to an embodiment of the present invention, on which a sensor group is not mounted.

Fig. 6 is a schematic sectional view taken along the line a-a in fig. 4.

Fig. 7 is a schematic sectional view taken along the direction B-B in fig. 5.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

As shown in fig. 4 to 7, the present invention discloses a thermal conduction device based on a thermal fluid, which is used for transferring heat of the thermal fluid to a solution in which the thermal fluid is located, so as to heat the solution, and the thermal conduction device comprises a tube body 2 vertically installed in a container, and a first pipe 20 and a second pipe 21 which are independent of each other are arranged in the tube body 2. A flow guide hole 22 communicated with the first pipeline 20 is formed in the side wall below the pipe body 2, the solution in the container can enter the first pipeline 20 through the flow guide hole 22, and the liquid level line in the first pipeline 20 is parallel to the liquid level line in the container. The second pipe 21 is provided with a liquid inlet 210 and a liquid outlet 211 for the ingress and egress of the thermal fluid, the liquid inlet 210 and the liquid outlet 211 may be disposed on a side wall or a bottom wall of the second pipe 21, but are preferably disposed on the bottom wall, the thermal fluid circulates in the second pipe 21 through the liquid inlet 210 and the liquid outlet 211, at least a part of the side wall constituting the second pipe 21 is a part of the outer wall of the pipe body 2, so that the thermal fluid in the second pipe 21 can conduct heat to the solution outside the pipe body 2.

Further, as shown in fig. 4 and 5, an opening 200 communicating with the first pipe 20 may be further disposed above the pipe 2, so that the air pressure inside the first pipe 20 is consistent with the air pressure outside the pipe 2 in real time, and when the pipe 2 is installed in the container, the opening 200 is located above the liquid level line (i.e. the height of the set volume of the container) in the container, so as to prevent the solution from flowing into the opening when the solution is filled or in a vibration environment. In addition, in order to improve the heating effect of the second pipeline 21, a flow guide channel is further arranged in the second pipeline 21, and the hot fluid in the second pipeline 21 flows out from the liquid outlet 211 after rising to a certain height through the flow guide channel, so that the situation that the hot fluid directly flows out from the liquid outlet 211 after entering from the liquid inlet 210 is avoided, and the effect of heat transfer cannot be achieved.

The operation principle of the heat transfer device will be described in detail below by taking a urea tank as an example. When the heat conduction device is installed in the tank 1 of the urea tank, please refer to fig. 2 to 7 in combination, firstly, a circulating hot fluid is formed in the second pipe 21 through the liquid inlet 210 and the liquid outlet 211, and since at least a part of the side wall forming the second pipe 21 is a part of the outer wall of the pipe body 2, when the hot fluid circulates in the second pipe 21, the hot fluid conducts heat to the urea solution in the tank 1 through the outer wall of the pipe body 2, so as to circularly heat the urea solution in the tank 1. Secondly, because the side wall below the pipe body 2 is provided with the diversion hole 22 communicated with the first pipeline 20, the first pipeline 20 is communicated with the box body 1, the urea solution in the box body 1 flows into the first pipeline 20 through the diversion hole 22, the liquid level of the urea solution in the first pipeline 20 is kept to be flush with the liquid level in the box body 1, so that the real-time state parameters of the urea solution in the box body 1 can be obtained by detecting the state parameters such as the liquid level, the temperature and the like of the urea solution in the first pipeline 20, therefore, based on the structure of the pipe body 2, the sensor group 3 can be installed in the first pipeline 20, the urea solution can smoothly flow into the first pipeline 20 through the diversion hole 22 in the process of filling the urea solution, the pipe body 2 can play an effective protection role on the sensor group 3, so as to avoid the disturbance flow or bubbles formed by the impact of the urea solution during the filling of the urea solution from directly influencing the sensor group 3 in the first pipeline, specifically, when the urea solution is injected, the urea solution impacts the tank body or the pipe body 2 to generate bubbles, and most of the bubbles float to the liquid surface and disappear due to the light weight of the bubbles, so that the bubbles can be effectively prevented from entering the first pipeline 20 through the flow guide hole 22 to interfere with the detection of the sensor group 3; in addition, when box 1 shakes, compare in the whole space in box 1, the influence of the vibrations of the urea solution in first pipeline 20 can be less to reduced because the solution that vibrations formed shakes the influence to sensor group 3, thereby for sensor group 3 provides a comparatively stable detection ring border, and then obtain accurate detection data. Preferably, as shown in fig. 5, the guiding holes 22 penetrate through two opposite sides of the pipe body 2, so as to shorten the time for the urea solution to enter the first pipeline 20, and avoid the deviation between the first pipeline 20 and the liquid level in the tank body 1 during the filling process when the filling process is too fast.

As shown in fig. 7, in order to improve the heating efficiency of the pipe body 2, the inner wall of the second pipe 21 is the outer wall of the first pipe 20, the outer wall of the second pipe 21 is the outer wall of the pipe body 2, that is, the first pipe 20 is located in the inner annular cavity of the pipe body 2, the second pipe 21 is located in the outer annular cavity of the pipe body 2, the second pipe 21 surrounds the periphery of the first pipe 20, when the hot fluid circulates in the second pipe 21, the hot fluid transfers heat to the urea solution inside and outside the pipe body 2 through the second pipe 21, specifically, the heat is transferred to the urea solution outside the pipe body 2 through the outer wall of the pipe body 2 (i.e., the outer wall of the second pipe 21), and the heat is transferred to the urea solution inside the pipe body 2 (i.e., the urea solution in the first pipe 20) through the inner wall of the second pipe 21, so that the heating area is effectively increased, and the heating efficiency is further improved, while effectively ensuring that the urea solution in the first conduit 20 is heated sufficiently evenly. The second pipe 21 structure in this embodiment can effectively increase the area of the heat transfer medium, thereby effectively increasing the heating efficiency.

Referring to fig. 2 and 3 and fig. 6 and 7, the flow guide channel includes a partition plate 212 extending upward from the bottom wall of the second pipe 21, the partition plate 212 divides the inner space of the second pipe 21 into at least two independent partitions, the liquid inlet 210 and the liquid outlet 211 are respectively located in two different partitions, an overflowing hole 213 is disposed at a certain height above the partition plate 212, and the hot fluid in the partition where the liquid inlet 210 is located can finally flow into the partition where the liquid outlet 211 is located through the overflowing hole 213 after rising to a certain height. In this embodiment, the partition 212 plays a role of reinforcing the strength of the tube body 2 in addition to the function of partitioning the partition, so that the partition 212 may extend from the bottom to the top of the tube body 2, and the overflowing hole 213 is provided in the middle or upper position of the partition 212. Preferably, the partition plates 212 are provided in plurality, the inner space of the second pipeline is divided into a plurality of independent partitions by the plurality of partition plates 212, the partition S1 where the liquid outlet 211 is located at the farthest end of the partition S2 where the liquid inlet 210 is located, when the hot fluid flows into the second pipeline from the liquid inlet 210, the partition S1 where the liquid inlet 210 is located is firstly collected, when the hot fluid in the partition S1 where the liquid inlet 210 is located rises to the overflowing hole 213, part of the hot fluid flows into the adjacent partition through the overflowing hole 213, and finally the hot fluid is collected and flows into the partition S2 where the liquid outlet 211 is located, so that the heat is rapidly and efficiently transferred to the urea solution inside and outside the pipe body 2 through the. In addition, the section S2 where the liquid outlet 211 is located and the section S1 where the liquid inlet 210 is located may be disposed adjacently, and the partition plate 212 between the two sections is not provided with the overflowing hole 213, so that the hot fluid flows out from the section S1 where the liquid inlet 210 is located, sequentially flows in a single direction through the overflowing holes 213 on the other partition plates 212, and finally flows to the section S2 where the liquid outlet 211 is located, and the circulating flow of the hot fluid in the second pipeline 21 is also realized. Therefore, through the arrangement of a plurality of independent partitions, the hot fluid can be left in the second pipeline for a long time, so that the heat of the hot fluid is fully utilized, and sufficient time is provided for the hot fluid to complete heat exchange.

In order to facilitate the use of the heat transfer device in the urea tank, as shown in fig. 2 to 7, a base 5 is disposed at the bottom of the tube body 2, a urea suction port 50 and a urea return port 51 are disposed on the base 5, the urea return port 51 is used for returning urea solution to the urea tank, the urea suction port 50 is used for sucking urea solution from the urea tank, and when in use, a urea suction conduit and a urea return conduit which are used with the urea tank are respectively connected with the urea suction port 50 and the urea return port 51. Preferably, a filter screen 25 is further disposed at the urea sucking port 50 and the urea returning port 51, the urea sucking port 50 and the urea returning port 51 are disposed in the filter screen 25, and by the arrangement of the filter screen 25, the urea solution is filtered by the filter screen no matter the urea solution flows out from the urea sucking port 50 or flows in from the urea returning port 51, so that the impurities in the urea tank can be prevented from flowing into the urea sucking conduit, and the impurities in the urea returning conduit can be prevented from flowing into the urea tank.

Furthermore, as shown in fig. 6, in order to sufficiently heat and thaw the urea solution sucked through the urea suction port 50, a notch 24 extending to the base 5 is formed on the side wall of the pipe body 2 near the diversion hole 22, and the urea suction port 50 and the urea return port 51 are located in the notch 24, so that the urea suction port 50 and the urea return port 51 are located in the pipe body 2. Preferably, the urea absorption port 50 and the urea return port 51 are respectively located at two sides of the diversion hole 22, and the filter screen 23 can be embedded in the notch 24, so that the integration level of the heat conduction device is better.

As shown in fig. 4 and 5, a plurality of empty grooves 23 may be formed at intervals on the sidewall of the top of the tube body 2 to reduce the weight of the tube body 2 and lower the center of gravity of the tube body 2, so that the tube body 2 is maintained in a more stable state.

As shown in fig. 1 to 3 and fig. 6, the present invention further discloses a urea tank, which includes a tank body 1 and a state parameter detection mechanism with a protection structure installed in the tank body 1, wherein the state parameter detection mechanism is used for detecting state parameters of urea solution in the urea tank, such as liquid level, temperature, concentration, etc. The state parameter detection mechanism comprises a sensor group 3 and a heat conduction device with the structure, wherein the sensor group 3 is arranged in the first pipeline 20 at the bottom of the pipe body 2. In this embodiment, through the combination of sensor group 3 and body 2 for the integrated level of urea case is higher, not only can realize the urea solution high-efficient heating in the urea case through body 2, and body 2 can play the guard action to sensor group 3 simultaneously, effectively reduces because of the influence that the bubble interference that the urea solution impact produced surveyed. Preferably, the sensor group 3 comprises an ultrasonic concentration probe, an ultrasonic level probe and a temperature probe. Further, the liquid inlet 210 and the liquid outlet 211 may be connected to a cooling system of an automobile engine, and a high-temperature coolant output from the cooling system flows into the second pipe in the pipe body 2 through the liquid inlet 210, and after heat exchange, the coolant with a reduced temperature flows back to the cooling system through the liquid outlet 211.

In addition, as shown in fig. 1 to 3, in order to facilitate the urea solution injection, the tank body 1 is provided with an injection port 10 for injecting the urea solution, and the diversion hole 22 deviates from the direct direction of the injection port 10, so as to avoid that the urea solution is directly poured into the diversion hole 22 to affect the sensor group 3 in the diversion hole 22 when the urea solution is injected, and in addition, bubbles generated during the urea solution injection directly enter the liquid level and concentration detection area through the diversion hole 22 to interfere the detection of the sensor group.

In another preferred embodiment of the urea box of the present invention, as shown in fig. 2 and 3, in order to fix the pipe 2, a positioning block 4 connected to the pipe 2 is installed on the top of the box body 1, and the positioning block 4 is used for fixing the pipe 2.

In summary, as shown in fig. 1 to 7, the present invention discloses a urea tank with a heat transfer device, in use, the sensor group 3 is installed at the bottom of the first pipeline 20, the pipe body 2 is installed in the tank body 1, the sensor group 3 is covered by the first pipeline 20, and the hot fluid is injected into the second pipeline 21, so that the hot fluid circulates in the second pipeline 21. The urea solution inside and outside the pipe body 2 is heated through the circulating flow of the hot fluid, the heating efficiency is effectively improved, and meanwhile, the sensor group 3 is covered by the first pipeline 20, so that the influence of bubbles formed by the impact of the urea solution in the urea tank on the sensor group 3 can be avoided.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims (17)

1. A thermal conduction device based on hot fluid is characterized by comprising a pipe body which can be vertically arranged in a container, wherein a first pipeline and a second pipeline which are independent of each other are arranged in the pipe body; a flow guide hole communicated with the first pipeline is formed in the side wall below the pipe body, and the solution in the container can enter the first pipeline through the flow guide hole; the second pipeline is provided with a liquid inlet and a liquid outlet for hot fluid to enter and exit, and at least part of side walls forming the second pipeline are part of the outer wall of the pipe body, so that the hot fluid circulating in the second pipeline can conduct heat to a solution outside the pipe body.

2. A hot-fluid based heat transfer device according to claim 1, wherein an opening portion communicating with the first pipe is provided above the pipe body.

3. A hot-fluid based heat transfer device according to claim 2, wherein the opening is located above a liquid level line in the vessel when the tube is installed in the vessel.

4. A hot-fluid based heat transfer device as claimed in claim 1, wherein a flow guiding channel is disposed in the second conduit, and the hot fluid in the second conduit can flow out from the liquid outlet after rising to a certain height through the flow guiding channel.

5. A hot fluid-based heat transfer device according to claim 1, wherein the inner wall of the second conduit is the outer wall of the first conduit and the outer wall of the second conduit is the outer wall of the pipe body.

6. The thermal fluid-based heat transfer device according to claim 4, wherein the flow guide channel comprises a partition plate extending upward from the bottom wall of the second pipe, the partition plate divides the inner space of the second pipe into at least two independent partitions, the liquid inlet and the liquid outlet are respectively located in two different partitions, an overflowing hole is arranged at a certain height above the partition plate, and the thermal fluid in the partition where the liquid inlet is located can flow into the partition where the liquid outlet is located through the overflowing hole after rising to a certain height.

7. The hot-fluid based heat transfer device according to claim 6, wherein the partition plates are provided in plurality, the inner space of the second pipe is divided into a plurality of independent partitions by the plurality of partition plates, and the partition where the liquid outlet is located at the farthest end of the partition where the liquid inlet is located.

8. A hot-fluid based heat transfer device according to claim 1, wherein the flow directing holes extend through opposite sides of the tube body.

9. The thermal fluid-based heat transfer device according to claim 1, wherein the container is a urea tank, the bottom of the tube is provided with a base, the base is provided with a urea suction port and a urea return port, the urea return port is used for returning urea solution to the urea tank, and the urea suction port is used for sucking out solution in the urea tank.

10. The thermal fluid-based heat transfer device of claim 9, wherein a screen is further disposed at the urea suction port and the urea return port, and the urea suction port and the urea return port are located in the screen.

11. The thermal fluid-based heat transfer device of claim 10, wherein a notch is formed in a sidewall of the tube body adjacent to the flow-guiding hole and extends to the base, and the urea suction port and the urea return port are located in the notch.

12. A hot fluid-based heat transfer device according to claim 1, wherein a plurality of slots are spaced apart in the sidewall of the top of the tube.

13. A condition parameter detection mechanism with shielding structure, comprising a sensor group and a thermal fluid-based heat transfer device according to any one of claims 1 to 12, said sensor group being arranged in said first conduit at the bottom of said tubular body.

14. The sensing mechanism of claim 13, wherein the sensor group comprises an ultrasonic concentration detector, an ultrasonic level detector and a temperature detector.

15. A urea tank comprising a tank body in which the state parameter detecting mechanism according to claim 14 is installed.

16. The urea tank of claim 15, wherein the tank body is provided with a filling port for filling urea solution, and the diversion hole is offset from a direction perpendicular to the filling port.

17. The urea tank of claim 15, wherein a positioning block connected with the pipe is installed at the top of the tank body, and the positioning block is used for stabilizing the pipe.

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