Butt joint device of pressure transmitter and pressure transmitter

Abstract

The utility model relates to a butt joint device of a pressure transmitter and the pressure transmitter, the butt joint device comprises a welding head, one end of the welding head is used for being welded with a pressure guiding pipe, and a first channel communicated with the pressure guiding pipe is arranged in the welding head; the first end of the adapter is connected with the welding head, a second channel is arranged in the adapter, the second channel is communicated with the first channel, and the second end is used for being connected with a transmitter body; and the sealing gasket is arranged between the welding head and the adapter, one of the welding head and the adapter is provided with a fixing part, and the sealing gasket is arranged in the fixing part. The transmitter body is connected to the pressure guiding pipe through the adapter and the welding head, the sealing gasket is arranged between the welding head and the adapter to prevent leakage between the welding head and the adapter, the fixing part is arranged on one of the welding head and the adapter to fix the sealing gasket, the sealing gasket is prevented from deviating, and the sealing performance of a system is prevented from being affected.

Description

Technical Field

[0001] The present disclosure relates to the technical field of pressure transmitters, and in particular to a docking device for a pressure transmitter and a pressure transmitter. Background Art

[0002] In the efficient operation of a power plant, accurate monitoring of key process parameters such as boiler water tank level and feed water flow is crucial to ensuring the overall safety of the power plant.

[0003] In actual use, there may be cases where the pressure transmitter and the pressure lead pipe do not match each other, so an adapter is required for connection. In related technologies, the sealing gasket may shift laterally and become misplaced due to thermal expansion and contraction of the unit and frequent valve operation, affecting the sealing of the system. Utility Model Content

[0004] The purpose of the present disclosure is to provide a docking device for a pressure transmitter and a pressure transmitter, which can solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned objectives, the present disclosure provides a docking device for a pressure transmitter, comprising: a welding head, one end of which is used for welding to a pressure lead tube, a first channel connected to the pressure lead tube being provided in the welding head; an adapter, the adapter comprising a first end and a second end with different calibers, the first end being connected to the welding head, a second channel being provided in the adapter, the second channel being connected to the first channel, and the second end being used to be connected to a transmitter body; and a sealing gasket being arranged between the welding head and the adapter, a fixing portion being provided on one of the welding head and the adapter, and the sealing gasket being arranged in the fixing portion.

[0006] Optionally, the fixing portion is provided on the welding head.

[0007] Optionally, the welding head includes a welding portion and a screw connection portion, the welding portion is rotatably connected to the screw connection portion, the welding portion is used to be connected to the pressure-inducing tube, and the screw connection portion is connected to the adapter.

[0008] Optionally, the threaded connection portion includes a nut and an annular clamp, the nut has a threaded hole, the first end is provided with an external thread corresponding to the threaded hole, the annular clamp is arranged at the end of the nut and extends toward the inner side of the threaded hole, the welding portion includes a connecting tube and an annular boss, the annular boss is arranged at the end of the connecting tube and extends out of the outer wall of the connecting tube, the annular boss is located inside the threaded hole and clamped with the annular clamp, and one end of the connecting tube passes through the annular clamp and extends out of the nut.

[0009] Optionally, the fixing portion is arranged on a side of the annular boss away from the connecting pipe.

[0010] Optionally, the fixing portion is configured as a fixing groove, and a diameter of the fixing groove is larger than an inner diameter of the connecting pipe and smaller than an outer diameter of the annular boss.

[0011] Optionally, the thickness of the sealing gasket is greater than the depth of the fixing groove so that the sealing gasket protrudes from the fixing groove and contacts the adapter.

[0012] Optionally, the outer diameter of the sealing gasket is larger than the inner diameter of the second channel.

[0013] Optionally, the sealing gasket is constructed as an annular polytetrafluoroethylene gasket.

[0014] The present disclosure further provides a pressure transmitter, comprising: a transmitter body; and the aforementioned docking device of the pressure transmitter, wherein the transmitter body is connected to the pressure-inducing pipe via the docking device.

[0015] Through the above technical solution, the transmitter body is connected to the pressure-inducing pipe through an adapter and a welding head. The welding head and the adapter are respectively provided with a first channel and a second channel to connect the transmitter body with the pressure-inducing pipe for detecting pressure. A sealing gasket is provided between the welding head and the adapter to prevent leakage between the welding head and the adapter. A fixing part is provided on one of the welding head and the adapter to fix the sealing gasket to prevent the sealing gasket from deviating and affecting the sealing of the system.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic diagram of the installation of the pressure transmitter in the present disclosure;

[0019] Figure 2 It is a schematic structural diagram of the transfer joint disclosed in the present invention;

[0020] Figure 3 is a schematic diagram of the external structure of the welding head in the present disclosure;

[0021] Figure 4 is a cross-sectional view of a welding head in the present disclosure;

[0022] Figure 5 1 is a top view of a weld portion in the present disclosure.

[0023] Description of Reference Numerals

[0024] 1. Transmitter body; 2. Adapter; 21. Second end; 22. First end; 3. Welding head; 31. Threaded portion; 311. Nut; 3111. Threaded hole; 312. Annular clamping plate; 32. Welding portion; 321. Connecting tube; 322. Annular boss; 33. First channel; 4. Pressure tube; 5. Fixing portion; 6. Sealing gasket. DETAILED DESCRIPTION

[0025] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0026] In this disclosure, unless otherwise indicated, directional terms such as "inside" and "outside" refer to the inside and outside relative to the outline of a component or structure. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not imply order or importance. Furthermore, in the description with reference to the accompanying drawings, the same reference numerals in different drawings represent the same element.

[0027] like Figure 1-3 As shown, the present disclosure provides a docking device for a pressure transmitter, including: a welding head 3, one end of which is used for welding to a pressure-inducing tube 4, and a first channel 33 connected to the pressure-inducing tube 4 is provided in the welding head 3; an adapter 2, the adapter 2 includes a first end 22 and a second end 21 of different calibers, the first end 22 is connected to the welding head 3, a second channel is provided in the adapter 2, the second channel is connected to the first channel 33, and the second end 21 is used to be connected to the transmitter body 1; and a sealing gasket 6 is arranged between the welding head 3 and the adapter 2, a fixing portion 5 is provided on one of the welding head 3 and the adapter 2, and the sealing gasket 6 is arranged in the fixing portion 5.

[0028] Through the above technical solution, the transmitter body 1 is connected to the pressure-inducing pipe 4 through the adapter 2 and the welding head 3. The welding head 3 and the adapter 2 are respectively provided with a first channel 33 and a second channel to connect the transmitter body 1 with the pressure-inducing pipe 4 for detecting pressure. A sealing gasket 6 is provided between the welding head 3 and the adapter 2 to prevent leakage between the welding head 3 and the adapter 2. A fixing part 5 is provided on one of the welding head 3 and the adapter 2 to fix the sealing gasket 6 to prevent the sealing gasket 6 from deviating and avoiding affecting the sealing of the system.

[0029] As an optional implementation, Figure 4As shown, the fixing portion 5 is provided on the welding head 3, that is, the sealing gasket 6 is provided on the welding head 3 to seal the gap between the adapter 2 and the welding head 3. In other embodiments, the fixing portion 5 can also be provided on the adapter 2.

[0030] Alternatively, as Figure 3-4 As shown, the welding head 3 includes a welding portion 32 and a screw portion 31. The welding portion 32 is rotatably connected to the screw portion 31. The welding portion 32 is used to connect to the pressure pipe 4. The screw portion 31 is connected to the adapter 2. The welding portion 32 is welded to the pressure pipe 4. The pressure pipe 4 is connected to the component that needs to test the pressure. The screw portion 31 is threadedly connected to the adapter 2. The welding portion 32 is rotatably connected to the screw portion 31. In this way, the direction of the transmitter body 1 can be adjusted when tightening to facilitate the staff to check. It is precisely because the welding portion 32 is rotatably connected to the screw portion 31 that there will inevitably be a gap between the welding portion 32 and the screw portion 31, so a sealing gasket 6 is required to be provided for sealing.

[0031] Among them, such as Figure 4 As shown, the screw connection portion 31 includes a nut 311 and an annular clamping platform 312. The nut 311 has a threaded hole 3111. The first end 22 is provided with an external thread corresponding to the threaded hole 3111. The annular clamping platform 312 is provided at the end of the nut 311 and extends toward the inner side of the threaded hole 3111. The welding portion 32 includes a connecting pipe 321 and an annular boss 322. The annular boss 322 is provided at the end of the connecting pipe 321 and extends beyond the outer wall of the connecting pipe 321. The inside of the threaded hole 3111 is clamped with the annular clamping platform 312, and one end of the connecting tube 321 passes through the annular clamping platform 312 and extends out of the nut 311, that is, the nut 311 is sleeved on the end of the connecting tube 321, and the annular boss 322 is in contact and clamped with the annular clamping platform 312, so that the nut 311 and the connecting tube 321 are rotatably connected, and the threaded portion 31 and the welding portion 32 are arranged in this way so that they can be detachably connected, and a suitable threaded portion 31 can be selected for connection before the welding portion 32 is welded.

[0032] Alternatively, as Figure 4 As shown, the fixing portion 5 is arranged on the side of the annular boss 322 away from the connecting pipe 321, that is, the sealing gasket 6 is arranged on the annular boss 322. After the adapter 2 is threadedly connected to the threaded portion 31, the sealing gasket 6 abuts against the end of the adapter 2 to prevent leakage due to the gap between the threaded portion 31 and the welding portion 32.

[0033] Alternatively, as Figure 4 As shown, the fixing portion 5 is constructed as a fixing groove, the diameter of which is larger than the inner diameter of the connecting pipe 321 and smaller than the outer diameter of the annular boss 322, so that the sealing gasket 6 can be clamped in the fixing groove to limit the sealing gasket 6 and prevent the sealing gasket 6 from moving laterally or deviating.

[0034] Alternatively, as Figure 4 As shown, the thickness of the sealing gasket 6 is greater than the depth of the fixing groove so that the sealing gasket 6 protrudes from the fixing groove and contacts the adapter 2, so that the sealing gasket 6 can contact the end of the adapter 2 to seal the adapter 2.

[0035] Optionally, the outer diameter of the sealing gasket 6 is larger than the inner diameter of the second channel, so that the sealing gasket 6 can completely surround the second channel to prevent leakage caused by the second channel and the gap between the threaded portion 31 and the welding portion 32.

[0036] As an optional implementation, Figure 5 As shown, the sealing gasket 6 is constructed as an annular PTFE gasket. The annular shape can ensure that the first channel 33 is connected to the second channel. The PTFE gasket has good properties such as corrosion resistance, aging resistance and non-conductivity, which increases the service life of the sealing gasket 6.

[0037] like Figure 1 As shown, the present disclosure also provides a pressure transmitter, including: a transmitter body 1; and the docking device of the above-mentioned pressure transmitter, the transmitter body 1 is connected to the pressure pipe 4 through the docking device, a sealing gasket 6 is provided between the welding head 3 and the adapter 2 to prevent leakage between the welding head 3 and the adapter 2, and a fixing part 5 is provided on one of the welding head 3 and the adapter 2 to fix the sealing gasket 6 to prevent the sealing gasket 6 from deviating and avoiding affecting the sealing of the system.

[0038] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0040] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A docking device for a pressure transmitter, characterized in that: include: A welding head, one end of which is used for welding to the pressure-inducing pipe, wherein the welding head is provided with a first passage communicating with the pressure-inducing pipe; an adapter, the adapter comprising a first end and a second end of different calibers, the first end being connected to the welding head, a second channel being provided in the adapter, the second channel being communicated with the first channel, and the second end being configured to be connected to the transmitter body; and A sealing gasket is arranged between the welding head and the adapter. A fixing portion is provided on one of the welding head and the adapter, and the sealing gasket is arranged in the fixing portion.

2. The docking device of the pressure transmitter according to claim 1, characterized in that: The fixing portion is provided on the welding head.

3. The docking device of the pressure transmitter according to claim 2, characterized in that: The welding head includes a welding portion and a screw connection portion, the welding portion is rotatably connected to the screw connection portion, the welding portion is used to be connected to the pressure-inducing pipe, and the screw connection portion is connected to the adapter.

4. The docking device for the pressure transmitter according to claim 3, characterized in that: The threaded connection portion includes a nut and an annular clamping plate, the nut has a threaded hole, the first end is provided with an external thread corresponding to the threaded hole, the annular clamping plate is arranged at the end of the nut and extends toward the inner side of the threaded hole, the welding portion includes a connecting tube and an annular boss, the annular boss is arranged at the end of the connecting tube and extends out of the outer wall of the connecting tube, the annular boss is located inside the threaded hole and is clamped with the annular clamping plate, and one end of the connecting tube passes through the annular clamping plate and extends out of the nut.

5. The docking device for the pressure transmitter according to claim 4, characterized in that: The fixing portion is arranged on a side of the annular boss away from the connecting pipe.

6. The docking device for the pressure transmitter according to claim 5, characterized in that: The fixing portion is configured as a fixing groove, and a diameter of the fixing groove is larger than an inner diameter of the connecting pipe and smaller than an outer diameter of the annular boss.

7. The docking device for the pressure transmitter according to claim 6, characterized in that: The thickness of the sealing gasket is greater than the depth of the fixing groove so that the sealing gasket protrudes from the fixing groove and contacts the adapter.

8. The docking device for the pressure transmitter according to claim 7, characterized in that: The outer diameter of the sealing gasket is larger than the inner diameter of the second channel.

9. The docking device for a pressure transmitter according to claim 1, characterized in that: The sealing gasket is constructed as an annular polytetrafluoroethylene gasket.

10. A pressure transmitter, characterized in that: include: Transmitter body; as well as According to the docking device of the pressure transmitter according to any one of claims 1 to 9, the transmitter body is connected to the pressure guide pipe through the docking device.

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