Pressure transmitter for natural gas conveying pipeline

Abstract

The utility model relates to the technical field of pressure transmitters, and provides a pressure transmitter for a natural gas conveying pipeline, which comprises a transmitter main body and a gas conveying assembly, and the lower end of the transmitter main body is fixedly provided with a gas storage assembly. According to the utility model, the second connector is inserted into the inner cavity of the first connector, the gas storage assembly and the gas transmission assembly are connected through the surface threaded connection of the external thread and the internal thread, then the rotating ring is rotated to move the wedge-shaped block to the side surface of the clamping groove, and then the spring pushes the wedge-shaped block to be clamped into the inner cavity of the clamping groove, so that the gas storage assembly and the gas transmission assembly are connected. According to the technical scheme, the gas storage assembly and the gas transmission assembly are further fixed, meanwhile, inner cavities of the second connector and the first connector are sealed through a sealing strip, gas leakage caused by too large pressure at the joint of the gas transmission assembly and the gas storage assembly is prevented, and the fixing and sealing effects are improved. The problems that in the prior art, the sealing performance of the connecting position is poor, air leakage is prone to occurring, and pressure measurement is not accurate enough are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, and specifically, to a pressure transmitter for natural gas transmission pipelines. Background Technique

[0002] A natural gas pipeline refers to a pipeline that transports natural gas (including associated gas produced in oil fields) from the production site or treatment plant to the urban gas distribution center or industrial enterprise users, also known as a gas transmission pipeline. When transporting natural gas, a pressure transmitter is required for measurement. A pressure transmitter is a device that converts pressure into a pneumatic signal or an electric signal for control and remote transmission. It can convert physical pressure parameters such as gas and liquid sensed by a pressure measuring element sensor into a standard electric signal (such as 4~20mADC, etc.) to supply secondary instruments such as indicating alarm instruments, recorders, and regulators for measurement, indication, and process adjustment.

[0003] The connection between the common pressure transmitter and the measured pipeline is designed relatively simply, through a simple threaded connection, with poor compressive capacity, resulting in poor sealing performance at the connection, easy air leakage, and inaccurate pressure measurement. Therefore, the utility model provides a pressure transmitter for natural gas transmission pipelines to solve the above problems. Content of the Utility Model

[0004] The utility model provides a pressure transmitter for natural gas transmission pipelines, which solves the problems of poor sealing performance at the connection, easy air leakage, and inaccurate pressure measurement in the related technology.

[0005] The technical solution of the utility model is as follows: A pressure transmitter for natural gas transmission pipelines includes a transmitter main body and a gas transmission component. A gas storage component is fixedly installed at the lower end of the transmitter main body. The gas storage component includes a gas storage tank. The upper surface of the gas storage tank is fixedly installed at the lower end of the transmitter main body. A first connector is fixedly installed on the surface of the gas storage tank. An annular groove is opened at one end of the first connector. An internal thread is opened in the inner cavity of the gas storage tank. A rotating ring is slidably connected to the surface of the annular groove. An inner side is opened in the inner cavity of the rotating ring. A spring is fixedly installed on the inner wall of the inner side. One end of the spring is fixedly installed with a wedge-shaped block. A through groove is opened in the inner cavity of the annular groove. The gas transmission component includes a connector main body. A gas transmission pipe is fixedly installed at one end of the connector main body. A second connector is fixedly installed at the other end of the connector main body. An external thread is opened at one end of the second connector. A card slot is opened on the side wall of the second connector.

[0006] Preferably, a hinge rod is hinged on the surface of the connector main body, and a second buckle is fixedly installed on the surface of the hinge rod.

[0007] Preferably, a sealing strip is fixedly installed at the other end of the second connector, and the sealing strip is conically arranged.

[0008] Preferably, a first buckle is fixedly installed on the side wall of the rotating ring, and the surface of the second buckle is clamped with the surface of the first buckle.

[0009] Preferably, one end of the through groove extends into the inner cavity of the first connector, and the surface of the external thread is threadedly connected with the inner wall of the internal thread.

[0010] Preferably, an installation ear is fixedly installed on the side wall of the gas storage tank.

[0011] Preferably, there are two groups of the hinge rods, the second buckles and the first buckles arranged correspondingly.

[0012] Preferably, there are several groups of the card slots, the inner sides, the springs and the wedge-shaped blocks arranged correspondingly.

[0013] Preferably, a display screen is fixedly installed on the surface of the transmitter main body, and a wiring groove is arranged at the upper end of the transmitter main body.

[0014] Preferably, the bottom of the inner cavity of the card slot is arranged in an inclined surface.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] In the present utility model, by inserting the second connector into the inner cavity of the first connector and threadedly connecting the surface of the external thread with the inner wall of the internal thread, the gas storage assembly and the gas transmission assembly are connected. Then, the rotating ring is rotated to move the wedge-shaped block to the side of the card slot, and the spring is used to push the wedge-shaped block into the inner cavity of the card slot to further fix the gas storage assembly and the gas transmission assembly. At the same time, the sealing strip is arranged to seal the inner cavities of the second connector and the first connector, preventing air leakage caused by excessive pressure at the connection between the gas transmission assembly and the gas storage assembly, and improving the fixing and sealing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a sectional structural schematic diagram of the present utility model;

[0020] Figure 3 is a partial sectional structural schematic diagram of the present utility model;

[0021] Figure 4 is a sectional structural schematic diagram of the first connector and the second connector of the present utility model;

[0022] Figure 5 This is a three-dimensional structural schematic diagram of the gas transmission component of the present utility model.

[0023] In the figure: 1, transmitter main body; 2, wiring groove; 3, gas storage component; 5, gas transmission component; 11, display screen; 30, first connector; 31, gas storage tank; 32, annular groove; 33, internal thread; 34, rotating ring; 35, inner side; 36, spring; 37, wedge block; 38, through groove; 39, installation ear; 41, first buckle; 51, connector main body; 52, gas transmission pipe; 53, second connector; 54, card slot; 55, sealing strip; 56, external thread; 57, hinge rod; 58, second buckle. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0025] Embodiment 1

[0026] As Figures 1 to 5 shown, this embodiment proposes a structure including a transmitter main body 1 and a gas transmission component 5. A gas storage component 3 is fixedly installed at the lower end of the transmitter main body 1. The gas storage component 3 includes a gas storage tank 31. The upper surface of the gas storage tank 31 is fixedly installed at the lower end of the transmitter main body 1. A first connector 30 is fixedly installed on the surface of the gas storage tank 31. An annular groove 32 is opened at one end of the first connector 30. An internal thread 33 is opened in the inner cavity of the gas storage tank 31. A rotating ring 34 is slidably connected to the surface of the annular groove 32. An inner side 35 is opened in the inner cavity of the rotating ring 34. A spring 36 is fixedly installed on the inner wall of the inner side 35. One end of the spring 36 is fixedly installed with a wedge block 37. A through groove 38 is opened in the inner cavity of the annular groove 32. The gas transmission component 5 includes a connector main body 51. A gas transmission pipe 52 is fixedly installed at one end of the connector main body 51. A second connector 53 is fixedly installed at the other end of the connector main body 51. An external thread 56 is opened at one end of the second connector 53. A card slot 54 is opened on the side wall of the second connector 53. A sealing strip 55 is fixedly installed at the other end of the second connector 53. The sealing strip 55 is tapered. One end of the through groove 38 extends into the inner cavity of the first connector 30. The surface of the external thread 56 is threadedly connected to the inner wall of the internal thread 33. A display screen 11 is fixedly installed on the surface of the transmitter main body 1. A wiring groove 2 is provided at the upper end of the transmitter main body 1.

[0027] In this embodiment, the second connector 53 is inserted into the inner cavity of the first connector 30, and the gas storage assembly 3 and the gas transmission assembly 5 are connected through the surface thread connection of the external thread 56 and the internal thread 33. Then, the rotating ring 34 is rotated to move the wedge block 37 to the side of the card slot 54, and the spring 36 is used to push the wedge block 37 into the inner cavity of the card slot 54 to further fix the gas storage assembly 3 and the gas transmission assembly 5. At the same time, the inner cavities of the second connector 53 and the first connector 30 are sealed through the setting of the sealing strip 55, preventing air leakage caused by excessive pressure at the connection between the gas transmission assembly 5 and the gas storage assembly 3, improving the fixing and sealing effects. The setting of the wiring slot 2 facilitates the connection with the signal line, facilitating the device to transmit the detected pressure signal. The setting of the display screen 11 facilitates the display of the pressure signal, facilitating timely viewing. The tapered setting of the sealing strip 55 facilitates the connection between the gas transmission assembly 5 and the gas storage assembly 3, and at the same time makes the sealing strip 55 seal the gas transmission assembly 5 and the gas storage assembly 3 more tightly.

[0028] Embodiment 2

[0029] As Figures 1 to 5 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes that a hinge rod 57 is hinged on the surface of the connector body 51, a second buckle 58 is fixedly installed on the surface of the hinge rod 57, a first buckle 41 is fixedly installed on the side wall of the rotating ring 34, and the surface of the second buckle 58 is clamped with the surface of the first buckle 41. An installation ear 39 is fixedly installed on the side wall of the gas storage tank 31. There are two groups of the hinge rod 57, the second buckle 58 and the first buckle 41 correspondingly arranged, and several groups of the card slot 54, the inner side 35, the spring 36 and the wedge block 37 are correspondingly arranged. The bottom of the inner cavity of the card slot 54 is arranged in an inclined plane.

[0030] In this embodiment, after the transmitter body 1 is connected to the gas transmission assembly 5, the second buckle 58 is driven to be clamped on the surface of the first buckle 41 by rotating the hinge rod 57 to fix the rotating ring 34 and prevent the rotating ring 34 from rotating, making the connection between the transmitter body 1 and the gas transmission assembly 5 more stable. Due to the inclined plane arrangement of the bottom wall of the card slot 54, when it is necessary to disassemble the transmitter body 1 and the gas transmission assembly 5, it is convenient to rotate the rotating ring 34 to move the wedge block 37 into the inner cavity of the through slot 38, facilitating the disassembly work. Through the arrangement of several groups of the card slot 54, the inner side 35, the spring 36 and the wedge block 37, the connection effect between the transmitter body 1 and the gas transmission assembly 5 is improved.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure transmitter for a natural gas transmission pipeline, characterized in that: It comprises a transmitter body (1) and a gas transmission assembly (5), wherein a gas storage assembly (3) is fixedly mounted on the lower end of the transmitter body (1); The gas storage assembly (3) comprises a gas storage box (31), the upper surface of the gas storage box (31) is fixedly mounted on the lower end of the transmitter body (1), a first connector (30) is fixedly mounted on the surface of the gas storage box (31), one end of the first connector (30) is provided with an annular groove (32), the inner cavity of the gas storage box (31) is provided with an internal thread (33), a rotating ring (34) is slidably connected to the surface of the annular groove (32), the inner cavity of the rotating ring (34) is provided with an inner side (35), a spring (36) is fixedly mounted on the inner wall of the inner side (35), one end of the spring (36) is fixedly mounted with a wedge block (37), and the inner cavity of the annular groove (32) is provided with a through groove (38); The gas delivery assembly (5) comprises a connector body (51), a gas delivery pipe (52) being fixedly mounted on one end of the connector body (51), a second connector (53) being fixedly mounted on the other end of the connector body (51), one end of the second connector (53) being provided with an external thread (56), and a side wall of the second connector (53) being provided with a slot (54).

2. A pressure transmitter for a natural gas transmission pipeline according to claim 1, characterized in that: A hinge rod (57) is hinged on the surface of the connector body (51), and a second buckle (58) is fixedly mounted on the surface of the hinge rod (57).

3. A pressure transmitter for a natural gas transmission pipeline according to claim 1, characterized in that: A sealing strip (55) is fixedly mounted on the other end of the second connector (53), and the sealing strip (55) is arranged in a conical shape.

4. A pressure transmitter for a natural gas transmission pipeline according to claim 2, characterized in that: A first buckle (41) is fixedly mounted on the side wall of the rotating ring (34), and a surface of the second buckle (58) is buckled with a surface of the first buckle (41).

5. The pressure transmitter for a natural gas transmission pipeline according to claim 1, characterized in that: One end of the through groove (38) extends to the inner cavity of the first connector (30), and the surface of the external thread (56) is threadedly connected to the inner wall of the internal thread (33).

6. A pressure transmitter for a natural gas transmission pipeline according to claim 1, characterized in that: A mounting ear (39) is fixedly mounted on the side wall of the air storage box (31).

7. A pressure transmitter for a natural gas transmission pipeline according to claim 2, characterized in that: The hinge rod (57), the second buckle (58) and the first buckle (41) are provided in two groups correspondingly.

8. The pressure transmitter for a natural gas transmission pipeline according to claim 1, characterized in that: The clamping groove (54), the inner side (35), the spring (36) and the wedge block (37) are provided in a plurality of groups correspondingly.

9. A pressure transmitter for a natural gas transmission pipeline according to claim 1, characterized in that: A display screen (11) is fixedly mounted on the surface of the transmitter body (1), and a wiring slot (2) is provided at the upper end of the transmitter body (1).

10. The pressure transmitter for a natural gas transmission pipeline according to claim 1, characterized in that: The bottom of the inner cavity of the card slot (54) is arranged in an inclined surface.

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