Ultrasonic heat meter with flow regulation function

Abstract

The utility model relates to pipeline flow measurement technical field especially discloses an ultrasonic heat meter with flow regulation function, including the main pipe of ultrasonic sensor installation, still including two branch pipes of two ends of main pipe apart, the inside of branch pipe is provided with the filter cavity of communication with main pipe, the lateral surface of branch pipe is provided with the filter groove of communication with filter cavity, the side of branch pipe is provided with the fixed hole of communication with filter cavity away from filter groove, is equipped with the fixed link in fixed hole, and the one end fixed link is connected with the valve core of being placed in filter cavity, is equipped with the filter screen of being covered in the valve core outside in filter cavity, and the plugging rod is detachably connected in filter groove, and the plugging rod one end is fixedly connected with filter screen, compares with traditional technology, and this technical scheme improves the monitoring precision of heat and guarantees the regulation effect of flow, greatly improves practicality.

Description

Technical Field

[0001] This utility model relates to the field of pipeline flow measurement technology, and in particular to an ultrasonic heat meter with flow regulation function. Background Technology

[0002] An ultrasonic heat meter is an instrument that measures flow rate and displays the heat energy released or absorbed by water flowing through a heat exchange system using ultrasonic methods. It is mostly used for heat monitoring on heating pipes. It obtains the heat value by measuring the physical quantities of the heat carrier and the inlet and outlet temperatures through two sensors. The heat meter has a pair of temperature sensors installed on the supply and return pipes of the heat carrier fluid, and two ultrasonic sensors installed on both sides of the pipe. The two ultrasonic sensors calculate the flow rate of the fluid by sending ultrasonic pulses and receiving the reflected signals.

[0003] Most existing ultrasonic heat meters only have heat measurement functions and cannot achieve flow regulation. Flow regulation is usually achieved by installing a separate manual diverter valve on the pipeline. However, the diverter valve has a diversion stroke of only 90 degrees and is mostly used to open and close the pipeline, with limited effect on flow regulation. Moreover, the heat carrier in the heating pipeline, such as hot water, is usually mixed with rust, moss, and scale from the inner wall of the pipeline due to moisture. These impurities can clog the sensor on the ultrasonic heat meter and the valve body of the manual diverter valve, thus affecting heat monitoring and flow regulation.

[0004] Therefore, it is necessary to propose an ultrasonic heat meter with flow regulation function to ensure heat monitoring and flow regulation. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing ultrasonic heat meters are easily clogged by impurities, leading to reduced heat monitoring accuracy and decreased flow regulation effect. The invention provides an ultrasonic heat meter with flow regulation function.

[0006] The technical solution of this utility model is: An ultrasonic heat meter with flow regulation function includes a main tube equipped with an ultrasonic sensor, and two secondary tubes located at both ends of the main tube. The secondary tubes have a filter cavity inside that communicates with the main tube, a filter groove on the side of the secondary tube that communicates with the filter cavity, and a fixing hole on the side of the secondary tube away from the filter groove that communicates with the filter cavity. A fixing rod is provided in the fixing hole. One end of the fixing rod is fixedly connected to a valve core placed in the filter chamber. A filter screen is provided in the filter chamber and sleeved on the outside of the valve core. A sealing rod is detachably connected in the filter groove. One end of the sealing rod is fixedly connected to the filter screen. The fixed rod can move axially relative to the fixed hole, thereby driving the valve core to move relative to the filter screen, and thus adjusting the area through which the fluid passes through the filter screen.

[0007] Furthermore, a cap is fixedly connected to the end of the plugging rod away from the filter screen. The secondary tube has a countersunk hole to accommodate the cap. The countersunk hole is coaxial with the filter tank and its diameter is larger than that of the filter tank. A sealing groove coaxial with it is opened in the countersunk hole. A sealing sleeve matching the sealing groove is fixedly connected to the cap. The cap is used to block the filter tank, and the countersunk hole is used to accommodate the cap. The sealing groove on it can ensure the sealing between the cap and the countersunk hole and prevent leakage.

[0008] Furthermore, the end of the filter screen away from the sealing rod is equipped with a cleaning device that contacts the side wall of the valve core. When the valve core moves relative to the filter screen, the cleaning device cleans the surface of the valve core. The cleaning device can scrape and clean the valve core when the valve core or the filter screen moves, removing residual scale and rust and other impurities from the surface of the valve core, ensuring the cleanliness of the valve core surface, and thus ensuring the sealing effect of the valve core on the filter chamber.

[0009] Furthermore, a sealing ring is fitted on the outside of the fixing rod to ensure the sealing between the fixing rod and the fixing hole.

[0010] Furthermore, the sealing rod is connected to the filter tank by screws to fix the filter screen inside the filter chamber.

[0011] Furthermore, the fixing hole is threaded, and the fixing rod is threadedly connected to the fixing hole. Through the threaded connection, the fixing rod can move axially within the fixing hole, thereby adjusting the position of the valve core within the filter chamber, thus changing the area through which the fluid passes through the filter screen and achieving flow rate regulation.

[0012] Furthermore, the main unit is equipped with a temperature sensor to detect the temperature, which, together with the fluid flow rate measured by the ultrasonic sensor, calculates the heat monitoring value.

[0013] Furthermore, the filters on both secondary pipes have the same precision, and both filters are fine filters. This configuration can ensure the cleanliness of the fluid passing through the two ultrasonic sensors to the greatest extent, minimize the residue of scale and other impurities on the ultrasonic sensors, and maximize the service life of the ultrasonic sensors.

[0014] Furthermore, the two secondary pipes have different filter precisions: one is for coarse filtration, and the other is for fine filtration. This arrangement enables graded filtration of impurities in the fluid, maximizing filtration efficiency. After the coarse filter removes large particles, the subsequent fine filter only filters small particles, preventing it from clogging easily. If the coarse filter becomes clogged, only the coarse filter needs to be replaced, without replacing the fine filter, thus extending its lifespan.

[0015] Furthermore, the cleaning device is a scraper or brush to ensure the cleanliness of the valve core surface.

[0016] The ultrasonic heat meter with flow regulation function of this utility model has the following beneficial effects: 1. Installing auxiliary pipes at both ends of the main pipe can provide a buffer for fluid flow. The filter chamber is used to store the heat-carrying fluid to flow into the main pipe. The filter screens at both ends are used to filter impurities such as scale, moss and rust in the fluid, so as to prevent impurities from adhering to the surface of the ultrasonic sensor after entering the main pipe and affecting the accuracy of the ultrasonic sensor in monitoring the flow. The valve core is used to regulate the fluid flow in the filter chamber.

[0017] 2. The filter screen is fitted on the outside of the valve core, which prevents impurities from adhering to the surface of the valve core and ensures the cleanliness of the valve core surface. While ensuring the valve core's effect on regulating fluid flow, the high integration of the valve core and the filter screen reduces the space occupied by the valve core and the filter screen in the pipeline. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is an exploded view of the present invention.

[0019] Reference numerals: 1. Ultrasonic sensor; 2. Main pipe; 3. Secondary pipe; 4. Filter chamber; 5. Filter groove; 6. Fixing hole; 7. Fixing rod; 8. Valve core; 9. Filter screen; 10. Plug rod; 11. Cover; 12. Countersunk hole; 13. Sealing groove; 14. Sealing sleeve; 15. Cleaning device; 16. Sealing ring; 17. Temperature sensor. Detailed Implementation

[0020] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0021] Example 1: like Figure 1 and Figure 2 As shown, this embodiment provides an ultrasonic heat meter with flow regulation function, including a main pipe 2 with an ultrasonic sensor 1 installed, and two secondary pipes 3 located at both ends of the main pipe 2. The secondary pipes 3 have a filter chamber 4 communicating with the main pipe 2 inside, and a filter groove 5 communicating with the filter chamber 4 on the side of the secondary pipe 3. The secondary pipe 3 has a fixing hole 6 communicating with the filter chamber 4 on the side away from the filter groove 5. The secondary pipe 3 is welded and fixed to the main pipe 2. A fixing rod 7 is provided in the fixing hole 6. A valve core 8 placed in the filter chamber 4 is fixed to one end of the fixing rod 7 with a screw. A filter screen 9 is provided in the filter chamber 4 and sleeved on the outside of the valve core 8. A sealing rod 10 is detachably connected in the filter groove 5. Specifically, the sealing rod 10 is fixedly connected to the filter groove 5 with a screw, thereby realizing a detachable connection. One end of the sealing rod 10 is fixedly connected to the filter screen 9 with a screw. The fixing rod 7 can move axially relative to the fixing hole 6, thereby driving the valve core 8 to move relative to the filter screen 9, thereby adjusting the area through which the fluid passes through the filter screen 9.

[0022] Preferred, such as Figure 2 and Figure 3 As shown, the end of the sealing rod 10 facing away from the filter screen 9 is fixedly connected to the cover 11 by screws. The secondary tube 3 has a countersunk hole 12 to accommodate the cover 11. The countersunk hole 12 is coaxial with the filter tank 5 and its diameter is larger than that of the filter tank 5. A sealing groove 13 coaxial with it is opened in the countersunk hole 12. A sealing sleeve 14 matching the sealing groove 13 is glued or fixedly connected to the cover 11 by screws. The sleeve is made of rubber or nylon. The cover 11 is used to seal the filter tank 5, and the countersunk hole 12 is used to accommodate the cover 11. The sealing groove 13 provided on it can ensure the sealing between the cover 11 and the countersunk hole 12 and prevent leakage.

[0023] Preferred, such as Figure 3 As shown, the end of the filter screen 9 away from the sealing rod 10 is provided with a cleaning device 15 that contacts the side wall of the valve core 8. When the valve core 8 moves relative to the filter screen 9, the cleaning device 15 cleans the surface of the valve core 8. The cleaning device 15 can scrape and clean the valve core 8 when the valve core 8 or the filter screen 9 moves, removing residual scale and rust and other impurities from the surface of the valve core 8, ensuring the cleanliness of the surface of the valve core 8, and thus ensuring the sealing effect of the valve core 8 on the filter chamber 4.

[0024] Preferred, such as Figure 3 As shown, a sealing ring 16 is fitted on the outside of the fixing rod 7. The sealing ring 16 is connected to the fixing rod 7 by a snap-fit, thereby ensuring the sealing between the fixing rod 7 and the fixing hole 6. The sealing ring 16 is made of rubber or nylon.

[0025] Preferably, the sealing rod 10 is connected to the filter tank 5 by screws to fix the filter screen 9 in the filter chamber 4.

[0026] Preferably, the fixing hole 6 is provided with a thread, and the fixing rod 7 is threadedly connected to the fixing hole 6. Through the threaded connection, the fixing rod 7 can move axially within the fixing hole 6, thereby adjusting the position of the valve core 8 within the filter chamber 4, thereby changing the area of ​​the fluid passing through the filter screen 9 and realizing the adjustment of the flow rate.

[0027] Preferred, such as Figure 1 As shown, the main pipe 2 is equipped with a temperature sensor 17 for detecting temperature. Combined with the fluid flow rate measured by the ultrasonic sensor 1, the heat monitoring value is calculated. Specifically, the return pipe of the heating pipe is also equipped with a temperature sensor 17. The temperature difference measured by the two temperature sensors 17, combined with the fluid flow rate measured by the two ultrasonic sensors 1, enables the monitoring of heat.

[0028] Preferred, such as Figure 1 As shown, the filter screens 9 on the two secondary pipes 3 have the same precision, and both filter screens 9 are fine filter screens 9. This setting can maximize the cleanliness of the fluid passing through the two ultrasonic sensors 1, minimize the residue of scale and other impurities on the ultrasonic sensors 1, and maximize the service life of the ultrasonic sensors 1.

[0029] Preferred, such as Figure 3 As shown, the cleaning device 15 is a scraper or brush to ensure the cleanliness of the surface of the valve core 8. The scraper and brush are oriented inwards towards the side of the valve core.

[0030] When using, such as Figure 1 , Figure 2 and Figure 3 As shown, rotating the fixed rod 7 adjusts the position of the valve core 8 within the filter chamber 4, thereby controlling the flow rate of the heat transfer fluid. The heat transfer fluid first passes through the front-end filter screen 9 and then enters the filter chamber 4. Since the filter screen 9 is cylindrical, the heat transfer fluid passes through the other side of the filter screen 9 and enters the main pipe 2. After being measured by the temperature sensor 17 and the ultrasonic sensor 1, the heat data is calculated, and then it enters the filter chamber 4 of the rear-end secondary pipe 3 for secondary filtration. This filtration serves as a secondary safety measure to prevent impurities from entering. The filter screen 9 is inserted into the subsequent heating pipes to prevent them from corroding and clogging. Compared to the rear filter screen 9, the front filter screen 9 is more prone to clogging. When replacing the filter screen 9, rotate the sealing rod 10 through the cover 11 to remove the sealing rod 10 from the filter groove 5. During the process of removing the filter screen 9 from the filter chamber 4, the cleaning device 15 on it will scrape off the impurities on the surface of the valve core 8, thus taking it out of the filter chamber 4 along with the filter screen 9, achieving the cleaning of the valve core 8. Then, replace it with a new filter screen 9, and tighten the sealing rod 10 and the cover 11 again. The replacement of the filter screen 9 is complete.

[0031] It should be noted that since the filter screen 9 needs to be fitted onto the outside of the valve core 8, and the filter screen 9 and the valve core 8 can move relative to each other, the filter screen 9 can perfectly fit the inner diameter of the filter chamber 4. However, the diameter of the valve core 8 cannot perfectly fit the size of the inner diameter of the filter chamber. Therefore, the diameter of the valve core 8 is slightly smaller than the inner diameter of the filter chamber 4, resulting in gaps. That is, the valve core 8 cannot completely seal the filter chamber 4. Therefore, this valve core 8 can only be used to regulate the fluid flow rate and cannot be used as a complete on / off valve. If the flow rate of the pipeline is to be completely blocked and shut off, a separate manual valve should be installed. Since this manual valve is not within the scope of protection of this technical solution, it will not be discussed further here.

[0032] This utility model discloses an ultrasonic heat meter with flow regulation function, which has the following beneficial effects: Secondary pipes 3 are installed at both ends of the main pipe 2 to provide buffer for fluid flow; the filter chamber 4 stores the heat-carrying fluid to flow into the main pipe 2; the filter screens 9 at both ends filter impurities such as scale, moss, and rust in the fluid, preventing impurities from adhering to the surface of the ultrasonic sensor 1 after entering the main pipe 2, thus affecting the flow monitoring accuracy of the ultrasonic sensor 1; the valve core 8 is used to regulate the fluid flow rate in the filter chamber 4; the filter screen 9 is sleeved on the outside of the valve core 8, preventing impurities from adhering to the surface of the valve core 8 and ensuring the cleanliness of the valve core 8 surface. While ensuring the flow regulation effect of the valve core 8, the high integration of the valve core 8 and the filter screen 9 reduces the space occupied by the valve core 8 and the filter screen 9 in the pipeline. Compared with traditional technology, this technical solution improves the heat monitoring accuracy and ensures the flow regulation effect, greatly improving practicality.

[0033] Example 2: The similarities between this embodiment and Embodiment 1 will not be repeated here. The differences are as follows: Figure 1 As shown, the filter screens 9 on the two secondary pipes 3 have different filtration precisions. One filter screen 9 is for coarse filtration, and the other filter screen 9 is for fine filtration. This arrangement enables graded filtration of impurities in the fluid, maximizing the filtration efficiency. Moreover, after the coarse filter screen 9 filters out large particles of impurities, the subsequent fine filter screen 9 is only used to filter small particles of impurities, preventing the fine filter screen 9 from easily clogging. If the coarse filter screen 9 becomes clogged, only the coarse filter screen 9 needs to be replaced, without replacing the fine filter screen 9, thus extending the service life of the fine filter screen 9.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. An ultrasonic heat meter with flow regulation function, comprising a main pipe (2) equipped with an ultrasonic sensor (1), characterized in that: It also includes two secondary pipes (3) located at both ends of the main pipe (2). The secondary pipe (3) has a filter chamber (4) connected to the main pipe (2) inside, a filter groove (5) connected to the filter chamber (4) on the side of the secondary pipe (3), and a fixing hole (6) connected to the filter chamber (4) on the side of the secondary pipe (3) away from the filter groove (5). A fixing rod (7) is provided in the fixing hole (6). One end of the fixing rod (7) is fixedly connected to a valve core (8) placed in the filter chamber (4). A filter screen (9) is provided in the filter chamber (4) and sleeved on the outside of the valve core (8). A blocking rod (10) is detachably connected in the filter groove (5). One end of the blocking rod (10) is fixedly connected to the filter screen (9). The fixed rod (7) can move axially relative to the fixed hole (6), thereby driving the valve core (8) to move relative to the filter screen (9), and thus adjusting the area through which the fluid passes through the filter screen (9).

2. The ultrasonic heat meter with flow regulation function according to claim 1, characterized in that: The end of the sealing rod (10) away from the filter screen (9) is fixedly connected to the cover (11). The secondary tube (3) has a countersunk hole (12) to accommodate the cover (11). The countersunk hole (12) is coaxial with the filter tank (5) and its diameter is larger than that of the filter tank (5). A sealing groove (13) coaxial with the countersunk hole (12) is provided inside the countersunk hole (12), and a sealing sleeve (14) matching the sealing groove (13) is fixedly connected to the cover (11).

3. The ultrasonic heat meter with flow regulation function according to claim 1, characterized in that: The filter screen (9) is provided with a cleaning device (15) that contacts the side wall of the valve core (8) at the end away from the sealing rod (10). When the valve core (8) moves relative to the filter screen (9), the cleaning device (15) cleans the surface of the valve core (8).

4. The ultrasonic heat meter with flow regulation function according to claim 1, characterized in that: A sealing ring (16) is fitted on the outside of the fixing rod (7).

5. The ultrasonic heat meter with flow regulation function according to claim 1, characterized in that: The sealing rod (10) and the filter tank (5) are connected by screws.

6. The ultrasonic heat meter with flow regulation function according to claim 1, characterized in that: The fixing hole (6) is threaded, and the fixing rod (7) is threadedly connected to the fixing hole (6).

7. The ultrasonic heat meter with flow regulation function according to claim 1, characterized in that: The main unit (2) is equipped with a temperature sensor (17).

8. The ultrasonic heat meter with flow regulation function according to claim 1, characterized in that: The filter screens (9) on the two secondary pipes (3) have the same precision, and both filter screens (9) are fine filter screens (9).

9. The ultrasonic heat meter with flow regulation function according to claim 1, characterized in that: The filters (9) on the two secondary pipes (3) have different filtration precisions. One filter (9) has a coarse filtration precision, while the other filter (9) has a fine filtration precision.

10. The ultrasonic heat meter with flow regulation function according to claim 3, characterized in that: The cleaning device (15) is a scraper or a brush.

Images