Pipe network heat metering device for heat exchange station

Abstract

The utility model belongs to the technical field of heating and ventilation equipment, and provides a pipe network heat metering device for a heat exchange station, which comprises a main pipeline, a branch pipeline and a bypass pipeline, the main pipeline is provided with a main valve and a main heat meter matched with the main valve in pipe diameter, the branch pipeline is provided with a branch valve and a branch heat meter matched with the branch valve in pipe diameter, and the branch pipeline is provided with a bypass valve and a bypass heat meter matched with the bypass valve in pipe diameter; the pipe diameter of the branch pipeline and the pipe diameter of the bypass pipeline are both smaller than that of the main pipeline. According to the pipe network heat metering device for the heat exchange station, different pipelines can be switched according to different heat supply areas so as to adjust heat supply heat consumption, the heat meters are effectively guaranteed to operate under normal loads and working conditions by arranging the matched heat meters in the different pipelines, and therefore the accuracy of heat metering is improved, and the working efficiency is improved. And heat loss and resource waste caused by heat metering deviation are reduced, and the heat supply cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of HVAC equipment, and particularly relates to a pipe network heat metering device for a heat exchange station. Background Art

[0002] At present, the heating capacity of the heat exchange station is carefully considered in the early design process to meet the heating needs of heat users in the region. However, when it is actually put into operation, the actual heating area demand is too low, that is, the heating demand under the maximum load state is usually calculated in the early stage of engineering design, while in most cases in actual operation, the actual heating area is far less than the heating demand under the maximum load state. In view of this situation, existing thermal power companies generally adopt the method of adjusting the opening of the pipeline valve of the heat exchange station to control the heating consumption, so as to avoid excessive heat supply and cause the unit consumption to exceed the heat consumption index. However, the change of flow in the heating pipeline of the heat exchange station will cause the heat meter to work under non-standard conditions. For example, the actual operating flow in the pipeline is far less than the rated flow of the heat meter. At this time, the flow rate of the heat medium in the pipeline is too low, which makes the metering data of the heat meter very easy to distort and produce deviations, seriously affecting the accuracy of the metering results, causing inaccurate heat metering results, and then causing the thermal power company to supply too much heat, increase heating costs, and waste thermal energy resources.

[0003] Therefore, it is necessary to design a pipe network heat metering device that can accurately measure the heat supply of the heat exchange station. Summary of the invention

[0004] In order to solve the above technical problems, the utility model proposes a pipe network heat metering device for a heat exchange station, which can switch different pipes according to different heating areas to adjust the heat consumption of heating, and effectively ensure that the heat meter operates under normal load and working conditions by arranging corresponding heat meters in different pipes, thereby improving the accuracy of heat metering, reducing heat loss and waste of resources caused by heat metering deviation, and reducing heating costs.

[0005] The technical solution of the utility model is:

[0006] The utility model provides a heat metering device for a pipe network of a heat exchange station, comprising a main pipe and branch pipes and side pipes connected in parallel with the main pipe;

[0007] The two ends of the main pipeline are connected to the heat exchange station and the heat user through pipelines respectively. The main pipeline is provided with a main valve and a main heat meter adapted to its pipe diameter. The branch pipeline is provided with a branch valve and a branch heat meter adapted to its pipe diameter. The branch pipeline is provided with a bypass valve and a bypass heat meter adapted to its pipe diameter.

[0008] Wherein, the diameters of the branch pipeline and the by-branch pipeline are both smaller than the diameter of the main pipeline.

[0009] Preferably, the diameter of the branch pipeline is between 1 / 2 and 3 / 4 of the diameter of the main pipeline.

[0010] Preferably, the diameter of the branch pipeline is between 1 / 4 and 1 / 2 of the diameter of the main pipeline.

[0011] Preferably, both ends of the branch pipeline are connected to the main pipeline at an angle, and the angle of inclination is not greater than 45°;

[0012] Both ends of the side branch pipeline are connected to the main pipeline at an angle, and the angle of inclination is no greater than 45°.

[0013] Preferably, both end portions of the branch pipe are detachably connected to the main pipe, and both end portions of the side-branch pipe are detachably connected to the main pipe.

[0014] Preferably, two of the main valve, the branch valve and the bypass valve are each provided, and are arranged close to the connection position between the branch pipeline, the bypass pipeline and the main pipeline.

[0015] Preferably, both ends of the main pipeline are detachably connected to the heating pipeline of the heat exchange station, so that the main pipeline is connected in series to the heating pipeline of the heat exchange station.

[0016] Preferably, the heat metering device for the heat exchange station provided by the utility model further includes a control mechanism, and the main valve, the branch valve, and the bypass valve are all electrically controlled valves;

[0017] The main valve, the main heat meter, the branch valve, the branch heat meter, the bypass valve, and the bypass heat meter are all connected to the control mechanism.

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

[0019] (1) By using main pipes, branch pipes, and side pipes with different diameters and connected in parallel, different pipes can be switched according to different heating area requirements. Compared with the existing method of changing the heating heat consumption by adjusting the valve opening, it can effectively ensure the normal flow of heat medium in the pipe, and there will be no phenomenon of too low flow rate, so that the heat meter can accurately measure the heating heat;

[0020] (2) Use main heat meters, branch heat meters, and bypass heat meters that are compatible with the pipe diameters of the main pipeline, branch pipeline, and bypass pipeline, respectively, so that the rated flow parameters of the heat meters correspond to the rated flow (nominal flow) of the pipeline, thereby ensuring that the heat meters operate under standard load and operating conditions, improving the accuracy of measurement results, and thus avoiding resource loss and waste caused by excessive heating heat, reducing heat supply costs, and improving energy utilization;

[0021] (3) Branch pipes and side pipes that are detachably connected to the main pipe are used. The branch pipes and side pipes can be removed and replaced as needed, thereby improving the flexibility and practicality of use and meeting the heating needs of different heat users. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a heat metering device for a heat exchange station network in Example 1 of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a heat metering device for a heat exchange station network in Example 2 of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the pipe network heat metering device for the heat exchange station in Example 3 of the utility model.

[0025] Figure numerals: 1, main pipeline; 11, main valve; 12, main heat meter; 2, branch pipeline; 21, branch valve; 22, branch heat meter; 3, bypass pipeline; 31, bypass valve; 32, bypass heat meter. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the present invention is now further described in conjunction with specific implementation methods.

[0027] Embodiment 1:

[0028] like Figure 1 As shown, the utility model provides a heat metering device for a heat exchange station pipe network, including a main pipe 1 and a branch pipe 2 and a side branch pipe 3 connected in parallel with the main pipe 1. When in use, the two ends of the main pipe 1 are respectively connected to the water supply port (i.e., the water outlet) of the heating pipe of the heat exchange station and the heat user through connecting pipes, that is, the main pipe 1 is connected in series to the heating pipe of the heat exchange station. Connecting flanges are provided at both ends of the main pipe 1, so that it can be detachably connected to the heating pipe of the heat exchange station, so that there is no need for large-scale rectification of the existing heating pipe network, and it can be directly connected to the existing heating pipe network for use, thereby improving practicality, expanding the scope of application, and reducing the maintenance and upgrade costs of the heating pipe network.

[0029] The main pipeline 1 is provided with a main valve 11 and a main heat meter 12 adapted to its pipe diameter. It should be noted that in the art, the rated flow of the pipeline is usually positively correlated with the pipe diameter of the pipeline. For the sake of clarity, this embodiment is simplified by the pipe diameter. The specific heat meter parameters are adapted to the rated flow of the pipeline, that is, the rated flow parameters of the heat meter are the same or similar to the nominal flow of the pipeline. The following descriptions are the same and will not be repeated.

[0030] The heat meter includes a flow sensor, a temperature sensor, and a processing unit. In view of the fact that it is a mature existing technology, its specific structure will not be described in detail here.

[0031] The branch pipe 2 is connected in parallel with the main pipe 1, and both ends of the branch pipe 2 are connected to the main pipe 1. The branch pipe 2 is provided with a branch valve 21 and a branch heat meter 22 adapted to its pipe diameter. Both ends of the branch pipe 2 are connected to the main pipe 1 at an angle of no more than 45°. Figure 1 As shown, its cross section is trapezoidal, which can effectively ensure the normal circulation of the heat medium in the pipeline and reduce the potential energy loss caused by diversion.

[0032] The diameter of the branch pipe 2 is smaller than that of the main pipe 1, and its diameter is between 1 / 2 and 3 / 4 of the diameter of the main pipe 1 to meet the heating patterns and heating needs of different heat users.

[0033] The side branch pipeline 3 is connected in parallel with the main pipeline 1, and both ends thereof are connected to the main pipeline 1. The side branch pipeline 3 is provided with a bypass valve 31 and a bypass heat meter 32 adapted to its pipe diameter. Both ends of the side branch pipeline 3 are connected to the main pipeline 1 at an angle, and the angle of inclination is not greater than 45°. The pipe diameter of the side branch pipeline 3 is smaller than that of the main pipeline 1, and its pipe diameter is between 1 / 4 and 1 / 2 of the pipe diameter of the main pipeline 1.

[0034] Optionally, in some embodiments, the heat metering device for the heat exchange station network in the present embodiment further includes a control mechanism (not shown in the figure), the main valve 11, the branch valve 21, and the bypass valve 31 are all electrically controlled valves, the main valve 11, the main heat meter 12, the branch valve 21, the branch heat meter 22, the bypass valve 31, and the bypass heat meter 32 are all connected to the control mechanism, and the main valve 11, the branch valve 21, and the bypass valve 31 can be regulated by the control mechanism, and at the same time, the control mechanism receives and collects the heat metering data of the main heat meter 12, the branch heat meter 22, and the bypass heat meter 32.

[0035] Optionally, in some embodiments, the control mechanism collects and interacts with data by remote communication, such as RS485 communication, Ethernet communication, or 4G / 5G communication, so that operators can realize remote monitoring and operation.

[0036] Embodiment 2:

[0037] For Example 2 of the utility model, Figure 2 Note that description of parts that are not different from those in Embodiment 1 will be omitted and will be given the same reference numerals.

[0038] like Figure 2 As shown, the utility model relates to a pipe network heat metering device for a heat exchange station, wherein the branch pipe 2 is detachably connected to the main pipe 1, and the side pipe 3 is detachably connected to the main pipe 1. Specifically, flange structures are provided at both ends of the branch pipe 2 and the side pipe 3 to achieve detachable sealed connection through the flange structure, thereby facilitating the maintenance and replacement of the branch pipe 2 and the side pipe 3. At the same time, when meeting different heating needs, the branch pipes 2 and the side pipes 3 of different diameters can be replaced, thereby improving the practicability of the device and expanding the scope of application.

[0039] Embodiment 3:

[0040] For Example 3 of the utility model, Figure 3 Note that description of parts that are not different from those in Embodiment 1 will be omitted and will be given the same reference numerals.

[0041] like Figure 3 As shown, the utility model relates to a heat metering device for a heat exchange station using a pipe network, wherein two main valves 11, two branch valves 21, and two bypass valves 31 are each provided with two, the two main valves 11 are symmetrically arranged on both sides of a main heat meter 12, the two branch valves 21 are symmetrically arranged on both sides of a branch heat meter 22, and the two bypass valves 31 are symmetrically arranged on both sides of a bypass heat meter 32.

[0042] The two branch valves 21 and the bypass valve 31 are arranged near the connection positions of the branch pipeline 2, the bypass pipeline 3 and the main pipeline 1, so that when any one of the main pipeline 1, the branch pipeline 2 and the bypass pipeline 3 is connected, the valves of the other pipelines are in a closed state, thereby avoiding backflow and the resulting heat loss.

[0043] In summary, the heat metering device for the heat exchange station network provided by the utility model can switch different pipelines according to different heating areas to adjust the heat consumption of heating. By setting corresponding heat meters in different pipelines, it is effectively guaranteed that the heat meters operate under normal load and working conditions, thereby improving the accuracy of heat metering, reducing heat loss and waste of resources caused by heat metering deviation, and reducing heating costs.

[0044] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A heat metering device for a heat exchange station, characterized in that: It comprises a main pipeline (1) and a branch pipeline (2) and a side branch pipeline (3) connected in parallel with the main pipeline (1); The two ends of the main pipeline (1) are connected to the heat exchange station and the heat user respectively through pipelines; the main pipeline (1) is provided with a main valve (11) and a main heat meter (12) matching the pipe diameter; the branch pipeline (2) is provided with a branch valve (21) and a branch heat meter (22) matching the pipe diameter; and the branch pipeline (3) is provided with a bypass valve (31) and a bypass heat meter (32) matching the pipe diameter; Wherein, the diameters of the branch pipeline (2) and the side branch pipeline (3) are both smaller than the diameter of the main pipeline (1).

2. The heat metering device for a heat exchange station according to claim 1, characterized in that: The diameter of the branch pipeline (2) is between 1 / 2 and 3 / 4 of the diameter of the main pipeline (1).

3. The heat metering device for a heat exchange station according to claim 2, characterized in that: The diameter of the branch pipeline (3) is between 1 / 4 and 1 / 2 of the diameter of the main pipeline (1).

4. The heat metering device for a heat exchange station according to claim 1, characterized in that: Both ends of the branch pipeline (2) are connected to the main pipeline (1) at an angle, and the angle of inclination is not greater than 45°; Both ends of the branch pipeline (3) are connected to the main pipeline (1) at an angle, and the angle of inclination is not greater than 45°.

5. The heat metering device for a heat exchange station according to claim 1, characterized in that: Both end portions of the branch pipeline (2) are detachably connected to the main pipeline (1), and both end portions of the side branch pipeline (3) are detachably connected to the main pipeline (1).

6. The heat metering device for a heat exchange station according to claim 1, characterized in that: The main valve (11), the branch valve (21), and the bypass valve (31) are each provided in pairs, and are arranged close to the connection position between the branch pipeline (2), the bypass pipeline (3), and the main pipeline (1).

7. The heat metering device for a heat exchange station according to claim 1, characterized in that: Both ends of the main pipeline (1) are detachably connected to the heating pipeline of the heat exchange station, so that the main pipeline (1) is connected in series to the heating pipeline of the heat exchange station.

8. The heat metering device for a heat exchange station according to claim 1, characterized in that: It also includes a control mechanism, wherein the main valve (11), the branch valve (21), and the bypass valve (31) are all electrically controlled valves; The main circuit valve (11), the main circuit heat meter (12), the branch circuit valve (21), the branch circuit heat meter (22), the bypass valve (31), and the bypass heat meter (32) are all connected to the control mechanism.

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