A device for measuring the pressure difference between the inlet and outlet of a pipe for two-phase flow

Abstract

The utility model discloses a kind of measuring devices of pipeline two-phase flow import and export pressure difference, belong to measuring device technical field, including transmitter body, the front of transmitter body is equipped with display dial, and the both sides of transmitter body are fixedly installed with integral ear tube, the outside of integral ear tube is equipped with temperature control component one, and the outside of transmitter body and display dial is sleeved with temperature control component two;The back of transmitter body is fixedly installed with backplate, the side of backplate is provided with the through jack two, the back middle part of backplate is provided with cooperation slot, and the four corners of backplate are fixedly provided with ear seat;Through the backplate set, it can be directly installed and used by the cooperation of ear seat and bolt, and it can be installed and used by the splice of clamp piece on the back of backplate, the stable installation and use of clamp piece is utilized, and the stable installation and use of backplate can be realized by the connection of embedding block two on substrate and backplate.

Description

Technical Field

[0001] This utility model belongs to the field of measuring device technology, specifically relating to a measuring device for measuring the pressure difference between the inlet and outlet of a two-phase flow pipeline. Background Technology

[0002] Currently, differential pressure transmitters are generally used to measure the inlet and outlet pressures of pipelines. A differential pressure transmitter is a specialized instrument for measuring pressure differences. It has the advantage of high accuracy and is generally used to measure the pressure loss of two-phase flow in pipelines. Specifically, differential pressure transmitters are used to prevent the medium in the pipeline from directly entering the transmitter. The pressure-sensing diaphragm is connected to the transmitter by a capillary tube filled with fluid. It is used to measure the level, flow rate, and pressure of liquids, gases, or steam, and then converts them into a 4-20mA DC signal output.

[0003] According to the authorization announcement number CN216433358U, an anti-interference type differential pressure transmitter is known prior art. Although the patent has the advantages of anti-interference capability and dust removal, the technical solution of the patent still has the following defects in actual use: the measuring device of the patent is difficult to guarantee stable installation and use under various working conditions. At the same time, when using the measuring device in colder regions, it is difficult to guarantee that the liquid substance will freeze when flowing inside, causing the measuring device to be unusable or damaged. Utility Model Content

[0004] The purpose of this invention is to provide a measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a measuring device for the pressure difference between the inlet and outlet of a two-phase flow in a pipeline, comprising a transmitter body, a display dial mounted on the front of the transmitter body, and an integrated ear tube fixedly mounted on both sides of the transmitter body, a temperature control component one mounted on the outside of the integrated ear tube, and a temperature control component two sleeved on the outside of the transmitter body and the display dial. A back plate is fixedly installed on the back of the transmitter body. A through-hole is provided on the side of the back plate. A mating groove is provided in the middle of the back of the back plate. Ear seats are fixedly provided at the four corners of the back plate. A clamp is provided on the back of the back plate. A base plate can also be connected to the back of the back plate. A locking module is provided between the base plate, the clamp, and the back plate.

[0006] In a preferred embodiment, the integrated ear tubes on both sides are respectively connected to a high-pressure end external tube and a low-pressure end external tube, and the high-pressure end external tube and the low-pressure end external tube have the same structure.

[0007] In a preferred embodiment, the end of the high-pressure end pipe is provided with a connecting nut, and the outer surface of the connecting nut is marked.

[0008] In one preferred embodiment, the temperature control component includes a heat-insulating sleeve fitted over the outside of the integrated ear tube, and a heating wire is provided inside the heat-insulating sleeve. A temperature sensor is provided on one outer wall of the heat-insulating sleeve.

[0009] In a preferred embodiment, the temperature control component two includes a housing first and a housing second, which are sleeved on the outside of the transmitter body and the display dial. Both sides of the housing first and the housing second are provided with through holes, and heating wires are also provided inside the housing first and the housing second.

[0010] In a preferred embodiment, the locking module includes a pin inserted into the second socket, one end of the pin is fixedly connected to a pull ring, and a liner is fixedly installed on the outside of the pin. One end of the pin is provided with a positioning port, and a pin block is provided inside the positioning port.

[0011] In a preferred embodiment, the clamp includes an insert block 1 inserted into the mating groove from bottom to top. A guide rail is fixedly installed on the back of the insert block 1. A fixed retaining ring is fixedly connected to the bottom end of the guide rail, and a movable retaining ring is provided on the upper part of the guide rail via a slider. A lip plate is provided on the same side of both the fixed retaining ring and the movable retaining ring. Vertically distributed screws are inserted into the inside of the guide rail, and the screws are threadedly connected to the slider.

[0012] In a preferred embodiment, an insert block 2 is fixedly installed on one outer wall of the substrate, which is inserted into the mating groove from bottom to top.

[0013] In a preferred embodiment, both the first and second embedded blocks are provided with through-holes on their sides.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This device for measuring the pressure difference between the inlet and outlet of a two-phase flow pipeline can be stably installed and used by directly using lugs and bolts through the back plate, or by splicing the back of the back plate with clamps to achieve stable installation and use, or by connecting the embedded block 2 on the base plate to the back plate to achieve stable installation and use. All three methods can be used to install and use the measuring device on the pipeline platform, improving the ability of the measuring device to be installed and used under various working conditions. The device for measuring the pressure difference between the inlet and outlet of the two-phase flow pipeline uses temperature control component one and temperature control component two to respectively insulate or heat the integrated ear tube, transmitter body and display dial, avoiding freezing during pipeline pressure detection in cold environments, providing thermal protection for the measuring device and improving its service life. Attached Figure Description

[0015] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is a schematic diagram of the back plate of the structure of this utility model; Figure 4 This is a schematic diagram of the clamp component of this utility model installed behind the back plate; Figure 5 This is a schematic diagram of the clamp component of this utility model. Figure 6 This is a schematic diagram of the substrate of the present invention installed behind the back plate. Figure 7 This is a schematic diagram of the substrate structure in this utility model.

[0016] In the diagram: 1. Transmitter body; 2. Display dial; 3. Integrated ear tube; 4. High-pressure end external pipe; 41. Connecting nut; 42. Marking; 5. Low-pressure end external pipe; 6. Temperature control component one; 61. Heating wire; 62. Insulation sleeve; 63. Temperature sensor; 7. Back plate; 71. Mating groove; 72. Clamp; 721. Embedded block one; 722. Guide rail; 723. Fixed retaining ring; 724. Movable retaining ring; 725. Lip plate; 726. Screw; 73. Base plate; 731. Embedded block two; 74. Ear seat; 75. Socket one; 8. Temperature control component two; 81. Housing one; 82. Housing two; 83. Through hole; 9. Locking module; 91. Pin; 92. Pull ring; 93. Liner plate; 94. Socket two; 95. Pin block. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments.

[0018] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0019] Please see Figure 1 and Figure 2This utility model provides a measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline, including a transmitter body 1. A display dial 2 is installed on the front of the transmitter body 1, and an integrated ear tube 3 is fixedly installed on both sides of the transmitter body 1. A high-pressure end external pipe 4 and a low-pressure end external pipe 5 are respectively connected to the integrated ear tube 3 on both sides. The high-pressure end external pipe 4 and the low-pressure end external pipe 5 have the same structure. A connecting nut 41 is provided at the end of the high-pressure end external pipe 4, and a mark 42 is provided on the outer surface of the connecting nut 41. The mark 42 can be marked with symbols such as H or L.

[0020] In this embodiment, the differential pressure of the pipeline is measured by the transmitter body 1, and the measured value is displayed by the display dial 2, which makes it convenient for people to view the measurement results. The high-pressure end and the low-pressure end of the pipeline to be measured are connected by the high-pressure end external pipe 4 and the low-pressure end external pipe 5.

[0021] Please see Figure 1 and Figure 2 The integrated earphone 3 is equipped with a temperature control component 6. The temperature control component 6 includes a heat insulation sleeve 62 that is fitted onto the outside of the integrated earphone 3. A heating wire 61 is installed inside the heat insulation sleeve 62. When the heating wire 61 is energized, heat energy is generated to heat the inside of the heat insulation sleeve 62, and then heats the inside of the integrated earphone 3. A temperature sensor 63 is installed on one side of the outer wall of the heat insulation sleeve 62 to detect the ambient temperature. The model of the temperature sensor 63 is LM-100.

[0022] In this embodiment, the temperature control component 6 can achieve heating and heat preservation of the outside of the integrated ear tube 3, thus preventing the internal liquid substances from freezing.

[0023] Please see Figure 1 and Figure 2 Temperature control component 2 8 is sleeved on the outside of transmitter body 1 and display dial 2. Temperature control component 2 8 includes housing 1 81 and housing 2 82 sleeved on the outside of transmitter body 1 and display dial 2. Both sides of housing 1 81 and housing 2 82 are provided with through holes 83. Heating wire 61 is also provided inside housing 1 81 and housing 2 82. The heating method and temperature monitoring method here are the same as those of temperature control component 1 6 mentioned above.

[0024] In this embodiment, the temperature control component 8 can achieve heating and heat preservation of the transmitter body 1 and the display dial 2, thus preventing the internal liquid substances from freezing.

[0025] Please see Figure 3 , Figure 4 and Figure 5A back plate 7 is fixedly installed on the back of the transmitter body 1. A through-hole 94 is provided on the side of the back plate 7. The through-hole 94 is a circular hole. A mating groove 71 is provided in the center of the back of the back plate 7. The mating groove 71 is a recessed groove, wider at the bottom and narrower at the top. Ear seats 74 are fixedly installed at each of the four corners of the back plate 7. The interior of the ear seats 74 is a circular through-hole structure, into which bolts are inserted. A clamping component 72 is provided on the back of the back plate 7. The clamping component 72 includes an insert block 721 inserted from bottom to top into the mating groove 71. A guide rail 722 is fixedly mounted on the back of the substrate 73. A fixed retaining ring 723 is fixedly connected to the bottom of the guide rail 722, and a movable retaining ring 724 is provided on the upper part of the guide rail 722 via a slider. A lip plate 725 is provided on the same side of both the fixed retaining ring 723 and the movable retaining ring 724. Vertically distributed screws 726 are inserted into the inside of the guide rail 722. The screws 726 are threadedly connected to the slider. By rotating the screws 726, the height of the movable retaining ring 724 can be adjusted, thereby achieving the closing and opening of the fixed retaining ring 723 and the movable retaining ring 724. An insert block 731 is fixedly mounted on one outer wall of the substrate 73, inserted from bottom to top into the mating groove 71. Both insert blocks 721 and 731 have through holes 75 on their sides.

[0026] In this embodiment, the back plate 7, clamp 72, and base plate 73 on the back of the transmitter body 1 are used to achieve various ways of fixing the back plate 7 in the mounting structure, thereby improving the flexibility of the measuring device during use.

[0027] Please see Figure 4 , Figure 6 and Figure 7 A base plate 73 can also be connected to the back of the back plate 7. A locking module 9 is provided between the base plate 73, the clamp 72 and the back plate 7. The locking module 9 includes a pin 91 inserted into the second insertion hole 94. One end of the pin 91 is fixedly connected to a pull ring 92, and a liner 93 is fixedly installed on the outside of the pin 91. One end of the pin 91 is provided with a positioning port, and a pin block 95 is provided inside the positioning port. The pin block 95 has a rectangular structure, and one end of the pin block 95 has a plug to ensure its stability when inserted into the positioning port.

[0028] In this embodiment, the locking module 9 can lock the first embedded block 721 and the second embedded block 731 inside the mating slot 71, insert the pin 91 into the first insertion hole 75 and the second insertion hole 94, and then insert the pin block 95 into the positioning port to lock the pin 91 inside the first insertion hole 75 and the second insertion hole 94.

[0029] The working principle and usage process of this utility model are as follows: There are several ways to install the transmitter body 1; Firstly, it can be directly installed on the platform of the pipe to be measured by using the lugs 74 at the four corners of the back plate 7 and bolts. Secondly, the clamp 72 is installed on the back of the back plate 7, and the insert block 721 is inserted into the mating groove 71 of the back plate 7. Then, the fixed retaining ring 723 and the movable retaining ring 724 are fitted onto the cylindrical structure. The movable retaining ring 724 is moved downward by rotating the screw 726 with a tool. Finally, the upper and lower lip plates 725 are fixed together by bolts. Thirdly, by embedding the second block 731 inside the mating groove 71 on the back of the back plate 7, the base plate 73 can be pre-fixed on the platform of the pipeline. This installation method is relatively simple and can realize the quick assembly and disassembly of the transmitter body 1. Both the second and third installation methods can achieve locking of the first embedded block 721 and the second embedded block 731 inside the mating slot 71 through the locking module 9; During the installation and use of the measuring device, if a low-temperature environment is encountered, the temperature can be monitored by the temperature sensor 63. When the temperature is lower than the set threshold, the heating wire 61 located inside the insulation sleeve 62, the first sleeve 81 and the second sleeve 82 is activated, which can heat the integrated ear tube 3 on both sides, the transmitter body 1 and the display dial 2, so that the inside will not freeze, thus ensuring the normal use of the measuring device in a low-temperature environment.

[0030] In the above scheme, it should be noted that: the transmitter body 1, temperature sensor 63 and heating wire 61 in this application are all existing products, and the specific structure, electrical connection method (circuit layout) and working principle of the transmitter body 1, temperature sensor 63 and heating wire 61 are all existing publicly disclosed technical means. At the same time, the temperature sensor 63 and heating wire 61 can be used through existing controllers, and the electrical connection method and control method between the temperature sensor 63 and heating wire 61 and the controller are existing mature technical means, which will not be described in detail here.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline, comprising a transmitter body (1), characterized in that: The transmitter body (1) is equipped with a display dial (2) on the front, and an integrated ear tube (3) is fixedly installed on both sides of the transmitter body (1). A temperature control component one (6) is installed on the outside of the integrated ear tube (3), and a temperature control component two (8) is sleeved on the outside of the transmitter body (1) and the display dial (2). A back plate (7) is fixedly installed on the back of the transmitter body (1). A through-hole (94) is provided on the side of the back plate (7). A mating groove (71) is provided in the middle of the back of the back plate (7). Ear seats (74) are fixedly provided at the four corners of the back plate (7). A clamp (72) is provided on the back of the back plate (7). A base plate (73) can also be connected to the back of the back plate (7). A locking module (9) is provided between the base plate (73), the clamp (72) and the back plate (7).

2. The measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline according to claim 1, characterized in that: The two sides of the integrated ear tube (3) are respectively connected to a high-pressure end external tube (4) and a low-pressure end external tube (5), and the high-pressure end external tube (4) and the low-pressure end external tube (5) have the same structure.

3. The measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline according to claim 2, characterized in that: The end of the high-pressure end external pipe (4) is provided with a connecting nut (41), and the outer surface of the connecting nut (41) is provided with a mark (42).

4. The measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline according to claim 1, characterized in that: The temperature control component (6) includes a heat insulation sleeve (62) fitted onto the outside of the integrated ear tube (3). A heating wire (61) is provided inside the heat insulation sleeve (62), and a temperature sensor (63) is provided on one side of the outer wall of the heat insulation sleeve (62).

5. The measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline according to claim 1, characterized in that: The second temperature control component (8) includes a first housing (81) and a second housing (82) sleeved on the outside of the transmitter body (1) and the display dial (2). Both sides of the first housing (81) and the second housing (82) are provided with through holes (83), and heating wires (61) are also provided inside the first housing (81) and the second housing (82).

6. The measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline according to claim 1, characterized in that: The locking module (9) includes a pin (91) inserted into the second socket (94). One end of the pin (91) is fixedly connected to a pull ring (92), and a liner (93) is fixedly installed on the outside of the pin (91). One end of the pin (91) is provided with a positioning port, and a pin block (95) is provided inside the positioning port.

7. The measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline according to claim 1, characterized in that: The clamp (72) includes an insert block (721) inserted into the mating groove (71) from bottom to top. A guide rail (722) is fixedly installed on the back of the insert block (721). A fixed retaining ring (723) is fixedly connected to the bottom end of the guide rail (722). A movable retaining ring (724) is provided on the upper part of the guide rail (722) through a slider. A lip plate (725) is provided on the same side of both the fixed retaining ring (723) and the movable retaining ring (724). Vertically distributed screws (726) are inserted into the inside of the guide rail (722). The screws (726) are threadedly connected to the slider.

8. The measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline according to claim 7, characterized in that: An insert block 2 (731) is fixedly installed on one side of the outer wall of the substrate (73) and inserted into the mating groove (71) from bottom to top.

9. The measuring device for the pressure difference between the inlet and outlet of a two-phase flow pipeline according to claim 8, characterized in that: Both the first (721) and the second (731) of the embedded block are provided with through-holes (75) on their sides.

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