Large-pipe-diameter recession flow device

Abstract

A large-pipe-diameter recession flow device comprises a water pipe and a flow meter arranged on the water pipe, the downstream end, provided with the flow meter, of the water pipe is connected with an upturning elbow, the upturning elbow comprises an upward-extending ascending part section and a highest-position part section, the ascending part section is connected with the downstream end, provided with the flow meter, of the water pipe, and the highest-position part section is connected with the upturning elbow. The bottom of the highest section is not lower than the top of the position, provided with the flow meter, of the water pipe, and the included angle between the rising section and the water pipe is not smaller than 120 degrees. The water pipe is simple and practical, the water level height in the section of the water pipe can be ensured to be not lower than the top height of the position provided with the flow meter all the time by arranging the upturning elbow, and therefore the accuracy of the flow meter arranged on the water pipe during flow detection can be ensured.

Description

[Technical field]

[0001] The utility model relates to the technical field of flow detection devices, in particular to a large-diameter water withdrawal flow device. [Background technology]

[0002] In order to ensure that the water source water flow of the water source heat pump energy station is accurately monitored, a flow meter is generally installed on the pipeline for flow detection. For water source heat pump energy stations, the return pipes generally used are large-diameter return pipes (DN500 and above), and electromagnetic flow meters are generally used for flow monitoring. Electromagnetic flow meters are required to be installed vertically when installed in horizontal pipelines. Given that the large-diameter return flow rate will change dynamically with the load of the heat pump host, the condition of insufficient pipes is very common, resulting in frequent zero or incorrect readings during operation, affecting the measurement accuracy. [Contents of the utility model]

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a large-diameter water withdrawal flow device, which has the effect of ensuring the accuracy of the readings of a flow meter installed on a large-diameter pipeline.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A large-diameter water flow monitoring device comprises a water pipe and a flow meter arranged on the water pipe, wherein the downstream end of the water pipe where the flow meter is arranged is connected with an upward elbow.

[0006] The upward elbow includes an upwardly extending rising section and a highest section, wherein the rising section is connected to a downstream end of a water pipe provided with a flow meter.

[0007] The bottom height of the highest section is not lower than the top height of the position where the flow meter is arranged on the water pipe.

[0008] The included angle between the rising section and the water pipe is not less than 120 degrees.

[0009] The utility model is further configured as follows: a rounded corner is provided at the connection position between the water pipe and the rising section.

[0010] The utility model is further configured as follows: the distance between the position where the flow meter is arranged on the water pipe and the upward elbow is not less than 5 times the inner diameter of the water pipe.

[0011] The utility model is further configured as follows: the included angle between the rising section and the water pipe is 120 degrees.

[0012] The utility model is further configured as follows: the downstream end of the water pipe on which the flow meter is provided is connected to a three-way valve, the inlet of the three-way valve is connected to the water pipe, the first outlet of the three-way valve is connected to the rising section of the upward elbow, the second outlet of the three-way valve is connected to a straight pipe, and the downstream end of the straight pipe and the downstream end of the upward elbow are merged and connected.

[0013] The utility model is further configured as follows: a first water level sensor is arranged on the top of the highest position section of the upward-turned elbow.

[0014] The utility model is further configured to include a drive module for controlling the three-way valve to be connected to the first outlet or the second outlet.

[0015] The utility model is further configured to include a control module, which is electrically connected to the drive module and the water level sensor respectively.

[0016] The utility model is further configured as follows: a second water level sensor is also provided on the top of the water pipe where the flow meter is provided.

[0017] The utility model is further configured to include a control module, which is electrically connected to the driving module, the first water level sensor and the second water level sensor respectively.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. The utility model is simple and practical. By providing an upward elbow, it can ensure that the water level in the section of the water pipe is always maintained at not lower than the top height of the position where the flow meter is provided, thereby ensuring the accuracy of the flow meter provided on the water pipe during flow detection.

[0020] 2. While ensuring the water level in the water pipe, the utility model also designs the angle between the upward curved pipe and the water pipe, the distance between the upward curved pipe and the position where the flow meter is arranged on the water pipe, and the structure of the connection position between the upward curved pipe and the water pipe, so as to avoid the backflow of water in the water pipe when it flows into the upward curved pipe and collides with the rising section of the upward curved pipe, thereby further avoiding affecting the accuracy of the flow meter in flow detection and ensuring the accuracy of flow detection.

[0021] 3. The utility model also takes into account the influence of the structure of the upward curved pipe on the water flow rate, water pressure and water withdrawal speed when the water flow rate is too large, and sets a structure which automatically switches to the straight pipe for drainage when the water flow rate is too large. When the water level sensor set at the top of the highest section of the upward elbow senses that the current water level is too high, it can switch to the straight pipe for drainage, thereby reducing the influence on the water pressure, water flow rate and water withdrawal speed. When the water level sensor at the top of the water pipe senses that the current water level is low, it can switch back to the upward curved pipe for drainage, thereby ensuring the accuracy of the flow meter's detection.

Brief Description of the Drawings

[0022] Figure 1 This is a structural diagram of a large-diameter water withdrawal flow detection device according to an embodiment of the utility model;

[0023] Figure 2 This is a structural diagram of a large-diameter water withdrawal flow detection device according to another embodiment of the utility model;

[0024] Figure 3 This is a principle block diagram of the control part of a large-diameter water retreat flow detection device according to another embodiment of the utility model.

[0025] Figure numerals: 1, water pipe; 2, upturned elbow; 21, rising section; 22, highest section; 3, flow meter; 41, first water level sensor; 42, second water level sensor; 5, three-way valve; 6, straight pipe; 7, control module; 8, drive module. [Specific implementation method]

[0026] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0027] It should be understood that the various steps described in the method implementation of the present utility model can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present utility model is not limited in this respect.

[0028] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "connected" may be directly connected or indirectly connected through intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0029] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0030] Figure 1 The structure of the large-diameter water flow monitoring device according to one embodiment of the utility model is schematically shown. Figure 1 As shown, the large-diameter water withdrawal flow detection device of the utility model includes a water pipe 1 and a flowmeter 3 arranged on the water pipe 1, and the downstream end of the water pipe 1 on which the flowmeter 3 is arranged is connected to an upward elbow 2. Specifically, the inner diameter range of the water pipe 1 is equal to or greater than 500 mm. Taking the water pipe 1 as a DN900 water withdrawal pipe as an example, the flowmeter 3 is arranged at the top of the water pipe 1. The pipe diameter of the upward elbow 2 is set to be the same as that of the water pipe 1, and at least includes an upwardly extending rising section 21 and a highest section 22 located at the highest position of the upward elbow 2. Among them, the rising section 21 of the upward elbow 2 is connected to the downstream end of the water pipe 1 on which the flowmeter 3 is arranged to achieve water flow communication. The highest section 22 of the upward elbow 2 can be directly connected to a pipeline arranged in a straight line, or a pipeline with a downward trend, so that the horizontal height of the subsequent pipeline is equivalent to the horizontal height of the water pipe 1, which is convenient for the subsequent arrangement of the pipeline and reduces the difficulty of the pipeline arrangement.

[0031] As for the upward elbow 2, the angle between its rising section 21 and the water pipe 1 is not less than 120 degrees. This arrangement can prevent the water in the water pipe 1 from colliding with the rising section 21 of the upward elbow 2 when it flows to the rising section 21 of the upward elbow 2, so as to be impacted and produce backflow, thereby affecting the accuracy of the reading of the flow meter 3 during detection. Figure 1 In the illustrated embodiment, the angle between the rising section 21 and the water pipe 1 is specifically set to 120 degrees.

[0032] In order to further reduce the impact on the accuracy of the detection of the flow meter 3 caused by the collision of the water in the water pipe 1 with the rising section 21 of the upward elbow 2 and the reverse flow, in some other embodiments, a rounded corner is provided at the connection position between the water pipe 1 and the rising section 21. With such a setting, the water flow can be smoother when passing through the connection position between the water pipe 1 and the upward elbow 2, thereby reducing the impact caused by the collision of the water in the water pipe 1 with the rising section 21 of the upward elbow 2 and the rising section 21 of the upward elbow 2.

[0033] In order to further reduce the impact on the accuracy of detection by the flowmeter 3 caused by the water in the water pipe 1 colliding with the rising section 21 of the upward elbow 2 when it reaches the rising section 21 of the upward elbow 2, thereby changing the fluid state of the water flow, in some other embodiments, the distance between the position where the flowmeter 3 is provided on the water pipe 1 and the end of the upward elbow 2 used to connect to the water pipe 1 is not less than 5 times the inner diameter of the water pipe 1. This arrangement can effectively prevent the water flow in the water pipe 1 from flowing to the upward elbow 2 and colliding with the upward elbow 2, thereby changing the fluid state of the water flow, and further ensure the accuracy of the value detected by the flowmeter 3 during detection. The distance between the position where the flowmeter 3 is provided on the water pipe 1 and the end of the upward elbow 2 used to connect to the water pipe 1, that is, Figure 1 The distance d on the water pipe 1 is shown. Since it is difficult to completely avoid the backflow caused by the collision between the water in the water pipe 1 and the rising section 21 of the upward elbow 2 when the water flows to the upward elbow 2, the setting of the flow meter 3 can be improved to reduce the change of the state of the fluid of the water flow caused by the backflow when the water flows to the upward elbow 2, thereby reducing the impact of the flow meter 3 on the detection when measuring. Specifically, Figure 1 In the embodiment shown, the distance d between the position where the flow meter 3 is provided on the water pipe 1 and the end of the upward elbow 2 for connecting with the water pipe 1 is specifically set to 5 times the inner diameter of the water pipe 1. Since the water pipe 1 is a DN900 drain pipe, the distance d can be set to 900*5=4.5m.

[0034] Since the downstream end of the water pipe 1 is connected with an upward elbow 2, under the influence of the upward elbow 2, although the flow meter 3 set on the water pipe 1 can ensure the accuracy of detecting the flow in the water pipe 1, under the influence of the upward elbow 2, the flow velocity, water pressure and water withdrawal speed of the water flow will be affected. Therefore, in some embodiments, a structure that can switch the pipes connected to the water pipe 1 can also be provided. Figure 2As shown, the downstream end of the water pipe 1 can be connected to a three-way valve 5, which includes an inlet and two outlets, the two outlets being a first outlet and a second outlet, wherein the inlet is connected to the downstream end of the water pipe 1, the first outlet is connected to the rising section 21 of the upward elbow 2, and the second outlet is connected to a straight pipe 6. In order to ensure that when the water pipe 1 is connected to the upward elbow 2, the effect of the upward elbow 2 on the water flow is reduced, and the possibility of backflow is reduced, and at the same time, in order to ensure that when the water pipe 1 is connected to the straight pipe 6, the effect on the flow rate, water pressure and water withdrawal speed of the water flow is reduced, the three-way valve 5 can be set as a Y-shaped three-way valve 5, and is set as a ball valve, and the channel between the inlet and the outlet in the ball valve is relatively smoother, thereby reducing the effect on the flow of water. At this time, when the water flow rate is large enough, there is no need to set the upward elbow 2, and the flow meter 3 can ensure the accurate detection of the flow in the water pipe 1. The three-way valve 5 can be controlled to switch the water pipe 1 to connect with the straight pipe 6, thereby ensuring the water flow rate, water pressure and water withdrawal speed.

[0035] Furthermore, in some other possible implementations, the three-way valve 5 may be provided with a driving module for driving and controlling the three-way valve 5 to switch between connecting to the first outlet or connecting to the second outlet, thereby enabling remote control of the three-way valve 5.

[0036] As some more preferred embodiments, refer to Figure 1 and Figure 2 As shown, a first water level sensor 41 may be provided at the top of the highest section 22 of the upward elbow 2. The first water level sensor 41 mainly detects whether the water flow rate in the current pipeline is too large, and then the first water level sensor 41 can detect the size of the water flow rate in the current upward elbow 2 in real time. If the water flow rate is too large, the water level will rise, and then the first water level sensor 41 can detect it. Figure 3 As shown, at this time, a control module 7 electrically connected to the driving module and the first water level sensor 41 can also be provided, so that the control module 7 can receive the electrical signal emitted by the first water level sensor 41. When receiving the electrical signal emitted by the first water level sensor 41 indicating that the water flow rate is too large, the control module 7 will send an electrical signal to the driving module according to the electrical signal emitted by the first water level sensor 41 to control the operation of the driving module, switch the outlet currently connected to the three-way valve 5 to connect to the straight pipe 6, realize automatic monitoring of the current water flow rate, and automatically switch the water pipe 1 to connect to the straight pipe 6 when the water flow rate is too large, so as to ensure the flow rate, water pressure and water withdrawal speed of the water flow.

[0037] Specifically, the drive module can be designed according to the structure of the actual three-way valve 5. For example, if the three-way valve 5 adopts a ball valve structure that switches the outlet in a rotating manner, the drive module can be set to a structure such as a motor component connected to the three-way valve 5 that can drive it to rotate and switch the outlet. The control module 7 can specifically adopt an Arduino-nano single chip. Arduino Nano is a micro development board based on ATmega328P. It is a small version of Arduino Uno with a smaller size and more powerful functions. Arduino Nano can be programmed through Arduino IDE, and the program can be directly uploaded to the board. It has an ADC module that allows Arduino Nano to read the output of the analog sensor and convert it into digital data for processing. The ADC module has multiple input channels and different resolution options, and can monitor the signals of multiple different sensors.

[0038] As a more preferred embodiment, refer to Figure 1 and Figure 2 As shown, a second water level sensor 42 can also be provided at the top of the water pipe 1 where the flow meter 3 is provided. The second water level sensor 42 mainly detects whether the water flow rate in the current pipe is too small, and then the second water level sensor 42 can detect the size of the water flow rate in the current water pipe 1 in real time. If the water flow rate is too small, the water level will drop, which will affect the detection accuracy of the flow meter 3, and then the second water level sensor 42 can detect it. Figure 3 As shown, at this time, the control module 7 is also electrically connected to the second water level sensor 42, so that the control module 7 can receive the electrical signal emitted by the second water level sensor 42. When the electrical signal indicating that the water flow rate is too small is received from the second water level sensor 42, an electrical signal is sent to the drive module according to the electrical signal emitted by the second water level sensor 42 to control the operation of the drive module, switch the outlet currently connected to the three-way valve 5 to connect to the upward elbow 2, realize automatic monitoring of the current water flow rate, and automatically switch the water pipe 1 to connect to the upward elbow 2 when the water flow rate is too small, to ensure the accuracy of the flow detection of the flow meter 3.

[0039] In summary, the multifunctional helmet provided by the present application has the following beneficial effects:

[0040] The utility model is simple and practical. By providing an upward elbow 2, it can ensure that the water level in this section of the water pipe 1 is always maintained at not lower than the top height of the position where the flow meter 3 is provided, so as to ensure the accuracy of the flow meter 3 provided on the water pipe 1 during flow detection. At the same time, it also designs the angle between the upward elbow and the water pipe 1, designs the distance between the upward elbow and the position where the flow meter 3 is provided on the water pipe 1, and designs the structure of the connection position between the upward elbow and the water pipe 1, so as to avoid backflow of water in the water pipe 1 when it flows into the upward elbow and collides with the rising section 21 of the upward elbow, thereby further avoiding affecting the accuracy of flow detection by the flow meter 3, thereby ensuring the accuracy of flow detection.

[0041] The utility model also takes into account the influence of the structure of the upward curved pipe on the water flow velocity, water pressure and water withdrawal speed when the flow rate is too large, and provides a structure which automatically switches to the straight pipe 6 for drainage when the water flow rate is too large. When the water level sensor arranged on the top of the highest section 22 of the upward elbow 2 senses that the current water level is too high, it can switch to the connection straight pipe 6 for drainage, thereby reducing the influence on the water pressure, water flow velocity and water withdrawal speed. When the water level sensor at the top of the water pipe 1 senses that the current water level is low, it can switch back to the upward curved pipe for drainage, thereby ensuring the accuracy of the detection of the flow meter 3.

[0042] Some exemplary embodiments of the utility model are described above, but those skilled in the art will appreciate that changes may be made to these exemplary embodiments without departing from the principles or spirit of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A large-diameter water withdrawal flow device, characterized in that: The invention comprises a water pipe (1) and a flow meter (3) arranged on the water pipe (1), wherein the downstream end of the water pipe (1) on which the flow meter (3) is arranged is connected to an upward elbow (2), The upward-turned elbow (2) comprises an upwardly extending rising section (21) and a highest section (22), wherein the rising section (21) is connected to a downstream end of the water pipe (1) on which a flow meter (3) is provided. The bottom height of the highest section (22) is not lower than the top height of the position where the flow meter (3) is arranged on the water pipe (1). The included angle between the rising section (21) and the water pipe (1) is not less than 120 degrees.

2. The large-diameter water withdrawal flow device according to claim 1, characterized in that: A rounded corner is provided at the connection position between the water pipe (1) and the rising section (21).

3. The large-diameter water withdrawal flow device according to claim 1, characterized in that: The distance between the position on the water pipe (1) where the flow meter (3) is arranged and the upward elbow (2) is not less than 5 times the inner diameter of the water pipe (1).

4. The large-diameter water withdrawal flow device according to claim 1, characterized in that: The included angle between the rising section (21) and the water pipe (1) is 120 degrees.

5. The large-diameter water withdrawal flow device according to claim 1, characterized in that: The downstream end of the water pipe (1) provided with a flow meter (3) is connected to a three-way valve (5); the inlet of the three-way valve (5) is connected to the water pipe (1); the first outlet of the three-way valve (5) is connected to the rising section (21) of the upward elbow (2); the second outlet of the three-way valve (5) is connected to a straight pipe (6); the downstream end of the straight pipe (6) and the downstream end of the upward elbow (2) are merged and connected.

6. The large-diameter water flow device according to claim 5, characterized in that: A first water level sensor (41) is arranged at the top of the highest section (22) of the upward elbow (2).

7. The large-diameter water withdrawal flow device according to claim 6, characterized in that: It also includes a drive module for controlling the three-way valve (5) to connect to the first outlet or the second outlet.

8. The large-diameter water withdrawal flow device according to claim 7, characterized in that: It also includes a control module (7), wherein the control module (7) is electrically connected to the drive module and the first water level sensor (41) respectively.

9. The large-diameter water withdrawal flow device according to claim 7, characterized in that: A second water level sensor (42) is also provided at the top of the water pipe (1) where the flow meter (3) is provided.

10. The large-diameter water withdrawal flow device according to claim 9, characterized in that: It also includes a control module (7), wherein the control module (7) is electrically connected to the drive module, the first water level sensor (41), and the second water level sensor (42) respectively.

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