Fluid conduit flow metering switching structure

Abstract

A fluid pipeline fluid flow metering switching structure, including: fluid pipeline, first differential pressure meter, second differential pressure meter, power controller and integrator, the first differential pressure meter includes detection pipe, both ends of the detection pipe are arranged on the pipeline of the fluid pipeline through flange, two pressure pipes on the bottom of the second differential pressure meter are respectively connected with first communication pipe and second communication pipe, the first communication pipe and the pressure pipe on the right side of the bottom of the first differential pressure meter are through connection, and the second communication pipe and the pressure pipe on the left side of the bottom of the first differential pressure meter are through connection, the utility model discloses a fluid pipeline fluid flow metering switching structure, through first differential pressure meter and fluid pipeline forward connection, and second differential pressure meter and first differential pressure meter are connected reversely, first differential pressure meter can carry out differential pressure detection in the pipeline, so the fluid flow of fluid pipeline forward transmission and reverse acceptance can be calculated.

Description

Technical Field

[0001] This utility model relates to the technical field of fluid flow measurement in thermal energy pipelines, and in particular to a fluid flow measurement switching structure for fluid pipelines. Background Technology

[0002] Currently, with the continuous development of time, many industrial parks have built heating pipe networks for centralized heating. Generally, energy companies receive steam from heat source units and supply it to heat-consuming units through the heating pipe network. However, in special circumstances, heat source units may require the steam pipe network to supply steam in reverse. Currently, steam metering methods mostly use differential pressure flow metering devices, which cannot measure when the fluid is flowing in reverse. Therefore, in this special case, workers need to reverse the installation of the differential pressure gauge, which is very inconvenient. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a fluid flow metering and switching structure for fluid pipelines.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A fluid flow metering switching structure for a fluid pipeline includes: a fluid pipeline, a first differential pressure gauge, a second differential pressure gauge, a power controller, and an integrator; the first differential pressure gauge includes a detection tube, the two ends of which are flanged and mounted on the fluid pipeline; a first connecting pipe and a second connecting pipe are respectively connected to two pressure taps at the bottom of the second differential pressure gauge, the first connecting pipe is connected to the pressure tap on the right side of the bottom of the first differential pressure gauge, and the second connecting pipe is connected to the pressure tap on the left side of the bottom of the first differential pressure gauge; the first differential pressure gauge and the second differential pressure gauge are electrically connected to the power controller, and the power controller is electrically connected to the integrator.

[0006] In one embodiment, a bidirectional telescopic plate is fixedly connected to the back of the first differential pressure gauge and the bottom second differential pressure gauge near the bottom, and a telescopic column is rotatably connected to the side of the bidirectional telescopic plate away from the differential pressure gauge.

[0007] In one embodiment, an auxiliary fixing ring is provided at the bottom of the telescopic column, and the auxiliary fixing ring is sleeved on the fluid pipe.

[0008] In one embodiment, the auxiliary fixing ring includes two fixing half-rings. The fixing half-rings have abutments arranged at equal intervals around the semicircle on the ring body near the fluid pipe. The two fixing half-rings are provided with hinges on the side of each other that are close to each other, and are rotatably connected together by the hinges.

[0009] In one embodiment, the two auxiliary retaining rings are connected together by threaded posts on the ring bodies away from the hinge.

[0010] In one embodiment, a rotating column is provided on the side of the bidirectional telescopic plate away from the differential pressure gauge, and a threaded connecting plate is fixedly connected to the side of the rotating column away from the bidirectional telescopic plate by bolts.

[0011] In one embodiment, the threaded connecting plate has a plurality of threaded holes on its body, and bolts for fixing are provided in the threaded holes.

[0012] In one embodiment, the diameter of the detection tube is the same as the diameter of the fluid conduit, and the fluid conduit is fitted with heat insulation cotton.

[0013] Compared with the prior art, the present invention has at least the following advantages:

[0014] This utility model discloses a fluid pipeline flow metering switching structure, which connects a first differential pressure gauge and a second differential pressure gauge in series through a first connecting pipe and a second connecting pipe. The first differential pressure gauge is connected to the fluid pipeline in the forward direction, while the second differential pressure gauge is connected to the first differential pressure gauge in the reverse direction. This allows the first differential pressure gauge to detect the differential pressure in the pipeline, and the differential pressure value can be calculated through a power controller and an integrator connected to it. The power controller can control which differential pressure gauge is turned on and off, thus allowing the calculation of the hot fluid flow rate when the fluid is transmitted in the forward direction and received in the reverse direction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the differential pressure gauge part of this utility model;

[0018] Figure 3 This is a schematic diagram of the side structure of the auxiliary fixing ring of this utility model.

[0019] In the diagram: 1. Fluid pipeline; 2. First differential pressure gauge; 21. Detection tube; 22. Bidirectional telescopic plate; 23. Telescopic column; 24. Auxiliary fixing ring; 241. Fixing half ring; 242. Abutment column; 243. Hinge; 244. Threaded column; 25. Rotating column; 26. Threaded connecting plate; 3. Second differential pressure gauge; 31. First connecting pipe; 32. Second connecting pipe; 4. Power controller; 5. Integrator. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0021] like Figure 1-3 As shown, a fluid pipeline flow metering switching structure includes: a fluid pipeline 1, a first differential pressure gauge 2, a second differential pressure gauge 3, a power controller 4, and an integrator 5; the first differential pressure gauge 2 includes a detection tube 21, the two ends of which are installed on the fluid pipeline 1 via flanges; the two pressure taps at the bottom of the second differential pressure gauge 3 are respectively connected to a first connecting pipe 31 and a second connecting pipe 32, the first connecting pipe 31 is connected to the pressure tap on the right side of the bottom of the first differential pressure gauge 2, and the second connecting pipe 32 is connected to the pressure tap on the left side of the bottom of the first differential pressure gauge 2; the first differential pressure gauge 2 and the second differential pressure gauge 3 are electrically connected to the power controller 4, and the power controller 4 is electrically connected to the integrator 5.

[0022] To address the issue of monitoring and calculating forward and reverse energy transfer within thermal pipelines, when forward energy transfer occurs in fluid pipeline 1 (i.e., when the energy company transfers thermal energy to the enterprise), the operator needs to activate the first differential pressure gauge 2 by operating the power controller 4. This allows the first differential pressure gauge 2 to detect the pressure difference within the pipeline and transmit the detected pressure difference data to the integrator 5 for calculation and display. When reverse energy transfer is required (i.e., when the energy company receives energy), the operator needs to operate the power controller 4 to deactivate the first differential pressure gauge 2 and activate the second differential pressure gauge 3. Because the first differential pressure gauge 2 and the second differential pressure gauge 3 are interconnected, and the second differential pressure gauge 3 is designed in the opposite direction (its internal pressure detector is designed in the opposite direction to the first differential pressure gauge 2), the second differential pressure gauge 3 can detect the pressure in the reverse direction within fluid pipeline 1 and transmit the detected pressure data to the integrator 5 for calculation and display.

[0023] like Figure 1-3As shown in one embodiment, a bidirectional telescopic plate 22 is fixedly connected to the back of the first differential pressure gauge 2 and the bottom second differential pressure gauge 3 near the bottom. A telescopic column 23 is rotatably connected to the side of the bidirectional telescopic plate 22 away from the differential pressure gauge. It should be noted that a fastening bolt is provided at the connection between the bidirectional telescopic plate 22 and the telescopic column 23, allowing the operator to adjust the rotation angle and lock it in place using the fastening bolt.

[0024] An auxiliary fixing ring 24 is provided at the bottom of the telescopic column 23, and the auxiliary fixing ring 24 is sleeved on the fluid pipeline 1. The auxiliary fixing ring 24 includes two fixing half-rings 241. On the side of the fixing half-ring 241 closest to the fluid pipeline 1, there are abutments 242 arranged at equal intervals around the semicircle. The two fixing half-rings 241 are provided with hinges 243 on the side close to each other, and are rotatably connected together by the hinges 243. The two auxiliary fixing rings 24 are connected to each other by threaded posts 244 on the side of the rings away from the hinges 243. It should be noted that the abutment 242 includes a telescopic rod with an internal spring, and its outer rod is connected to the fixing half-ring 241, while the inner rod is provided with an arc-shaped clamp on the side away from the fixing half-ring 241 for clamping the fluid pipeline 1.

[0025] It should be noted that the first differential pressure gauge 2 is connected to the pipeline through two metal tubes, while the second differential pressure gauge 3 is connected to the first differential pressure gauge 2 through a metal tube. Therefore, the weight of the two differential pressure gauges is entirely on the two metal tubes of the first differential pressure gauge 2. To prevent the metal tubes from bending or breaking due to long-term pressure, the bidirectional telescopic plate 22, telescopic column 23, and auxiliary fixing ring 24 are used to allow the user to adjust the length. At the same time, the auxiliary fixing ring 24 can be clamped on the fluid pipeline 1 to support the weight of the two differential pressure gauges, so that the weight can be distributed and not entirely on the two metal tubes of the first differential pressure gauge 2.

[0026] like Figure 1-3 As shown in one embodiment, a rotating column 25 is provided on the side of the bidirectional telescopic plate 22 away from the differential pressure gauge. A threaded connecting plate 26 is fixedly connected to the side of the rotating column 25 away from the bidirectional telescopic plate 22 by bolts. The threaded connecting plate 26 has a plurality of threaded holes, in which bolts for fixing are provided.

[0027] It should be noted that this design allows staff to fix the differential pressure gauge to a back plate, which also helps to distribute the weight of the differential pressure gauge.

[0028] like Figure 1-3 As shown in one embodiment, the diameter of the detection tube 21 is the same as the diameter of the fluid pipe 1, and the fluid pipe 1 is fitted with heat insulation cotton. It should be noted that this design can reduce heat loss from the fluid pipe 1.

[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fluid pipeline flow metering switching structure, characterized in that, include: The fluid pipeline (1), the first differential pressure gauge (2), the second differential pressure gauge (3), the power controller (4), and the integrator (5) are provided. The first differential pressure gauge (2) includes a detection tube (21), and the two ends of the detection tube (21) are provided on the pipeline of the fluid pipeline (1) through flanges. The two pressure taps at the bottom of the second differential pressure gauge (3) are respectively connected to a first connecting pipe (31) and a second connecting pipe (32). The first connecting pipe (31) is connected to the pressure tap on the right side of the bottom of the first differential pressure gauge (2), and the second connecting pipe (32) is connected to the pressure tap on the left side of the bottom of the first differential pressure gauge (2). The first differential pressure gauge (2) and the second differential pressure gauge (3) are electrically connected to the power controller (4), and the power controller (4) is electrically connected to the integrator (5).

2. The fluid pipeline flow metering switching structure according to claim 1, characterized in that, The first differential pressure gauge (2) and the bottom second differential pressure gauge (3) are fixedly connected to a bidirectional telescopic plate (22) on the back side near the bottom. The side of the bidirectional telescopic plate (22) away from the differential pressure gauge is connected to a telescopic column (23) by rotation.

3. The fluid pipeline flow metering switching structure according to claim 2, characterized in that, The bottom of the telescopic column (23) is provided with an auxiliary fixing ring (24), which is sleeved on the fluid pipe (1).

4. The fluid pipeline flow metering switching structure according to claim 3, characterized in that, The auxiliary fixing ring (24) includes two fixing half-rings (241). The fixing half-rings (241) have abutments (242) arranged at equal intervals around the semicircle on the side of the ring body close to the fluid pipe (1). The two fixing half-rings (241) are provided with hinges (243) on the side close to each other, and are rotatably connected together by the hinges (243).

5. The fluid pipeline flow metering switching structure according to claim 4, characterized in that, The two auxiliary retaining rings (24) are connected to each other by threaded posts (244) on the side of the ring away from the hinge (243).

6. The fluid pipeline flow metering switching structure according to claim 2, characterized in that, A rotating column (25) is provided on the side of the bidirectional telescopic plate (22) away from the differential pressure gauge, and a threaded connecting plate (26) is fixedly connected to the side of the rotating column (25) away from the bidirectional telescopic plate (22) by bolts.

7. The fluid pipeline flow metering switching structure according to claim 6, characterized in that, The threaded connecting plate (26) has several threaded holes on its plate body, and bolts for fixing are provided in the threaded holes.

8. A fluid pipeline flow metering switching structure according to claim 6, characterized in that, The diameter of the detection tube (21) is the same as the diameter of the fluid pipe (1), and the fluid pipe (1) is covered with heat insulation cotton.

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