CN219388681U - Three-way needle valve device and pipeline pressure detection system - Google Patents
Three-way needle valve device and pipeline pressure detection system Download PDFInfo
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- CN219388681U CN219388681U CN202320251085.5U CN202320251085U CN219388681U CN 219388681 U CN219388681 U CN 219388681U CN 202320251085 U CN202320251085 U CN 202320251085U CN 219388681 U CN219388681 U CN 219388681U
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- needle valve
- way needle
- valve body
- joint interface
- valve device
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Abstract
The utility model provides a three-way needle valve device and a pipeline pressure detection system, comprising a three-way needle valve body, wherein a first fluid outlet of the three-way needle valve body is provided with a first internal thread loose joint interface for connecting a pressure gauge, and a second fluid outlet of the three-way needle valve body is provided with a second internal thread loose joint interface; and a meter bend in communication with the fluid inlet of the three-way needle valve body. According to the utility model, the gauge bend originally connected between the three-way needle valve and the pressure gauge is cancelled, the gauge bend with higher strength is changed, the position is changed to the bottom of the three-way needle valve, and the pressure gauge can be directly connected with the three-way needle valve, so that the three-way needle valve has the advantages of more stable integral structure, better sealing performance, more convenient installation and greatly improved service life.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a three-way needle type valve device with a meter bend, which is mainly applied to the installation of pipeline pressure measuring points in a heat exchange station.
Background
The needle valve is a valve capable of accurately switching on and off fluid, has wider application, is commonly applied to sealing of gas or liquid medium with smaller flow and higher pressure, is commonly matched with a pressure gauge for use, has poor sealing performance when bearing high pressure, and has unstable switching performance, so that the service life of the needle valve is shorter. The existing solution is that a three-way needle valve is connected with a pressure gauge through a meter bend, so that vibration is reduced, the pressure gauge is protected, and temperature influence errors of the pressure gauge are reduced, but both ends of the meter bend are connected with heavier devices, so that the meter bend has the risk of being bent in the process of transporting products, and the structure is unstable; secondly, each interface of the needle valve in the prior art adopts a non-detachable fixed connection mode, and the interfaces cannot be replaced and maintained after long-term use, so that the integral tightness of the valve body is not good enough.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a three-way needle valve device which has simple and stable structure, good sealing performance and longer service life, and the specific technical scheme is as follows:
a three-way needle valve device comprises a three-way needle valve body, wherein a first fluid outlet of the three-way needle valve body is provided with a first internal thread loose joint interface for connecting a pressure gauge, and a second fluid outlet of the three-way needle valve body is provided with a second internal thread loose joint interface; and a meter bend in communication with the fluid inlet of the three-way needle valve body.
Further, a third internal thread loose joint interface is arranged at the top of the meter bend and is in threaded connection with the fluid inlet of the three-way needle valve body.
The utility model also provides a pipeline pressure detecting system, including foretell three-way needle valve device, first internal thread loose joint interface is connected with the manometer, second internal thread loose joint interface is connected with pressure transmitter.
According to the technical scheme, the gauge bend which is originally connected between the three-way needle valve and the pressure gauge is cancelled, the gauge bend with higher strength is changed, the position is changed to the bottom of the three-way needle valve, the pressure gauge can be directly connected with the three-way needle valve, so that the three-way needle valve has the advantages of more stable integral structure, better sealing performance, more convenient installation and greatly improved service life.
Drawings
FIG. 1 is a schematic diagram of a three-way needle valve assembly according to an embodiment of the present utility model;
FIG. 2 is a schematic view of another embodiment of a three-way needle valve device of the present utility model;
FIG. 3 is a front view of the three-way needle valve device of the present utility model showing a cross-sectional view of the three-way needle valve body;
FIG. 4 is a schematic diagram of a pipeline pressure detection system according to the present utility model.
Detailed Description
The present utility model will be described in detail below with reference to the drawings and detailed embodiments, and before the technical solutions of the embodiments of the present utility model are described in detail, the terms and terms involved will be explained, and in the present specification, the components with the same names or the same reference numerals represent similar or identical structures, and are only limited for illustrative purposes.
As shown in fig. 1 and 2, the three-way needle valve device of the present application includes a three-way needle valve body 1 and a meter bend 2, wherein the three-way needle valve body 1 is a diverter valve, and has one fluid inlet, and flows out from two fluid outlets after being diverted, specifically, in this embodiment, the fluid inlet is disposed at the bottom of the three-way needle valve body 1, the first fluid outlet is disposed at the top of the three-way needle valve body 1 for connection with a pressure gauge, and the second fluid outlet is disposed at one side of the three-way needle valve body 1 for connection with a pressure transmitter; the other side of the three-way needle valve body 1 opposite to the second fluid outlet is provided with an adjusting hand wheel 3 for adjusting the on-off state in the three-way needle valve body 1.
The utility model provides a three-way needle type valve body 1's two fluid outlets all adopt screw thread loose joint interface, easy to assemble and dismantlement, and the first internal thread loose joint interface 11 that the first fluid outlet was provided with is provided with specifically, and the second fluid outlet is provided with second internal thread loose joint interface 12.
The top of the meter bend 2 is connected with the fluid inlet of the three-way needle valve body 1 in a threaded manner, the other end of the meter bend 2 is directly inserted and welded on a pipeline pressure measuring point, the three-way needle valve body 1 is directly connected with a pressure meter, connecting pieces are reduced, and the whole structure is more stable. Wherein, the bottom of the meter bend is connected with the pipeline pressure measuring point by plug welding.
As shown in fig. 3, a third internal thread loose-joint interface 13 is arranged at the top of the meter bend 2, and the third internal thread loose-joint interface 13 is of a tubular structure and is used for accommodating the tetrafluoro gasket 6 in the inner cavity of the tubular structure. In this embodiment, the fluid inlet of the three-way needle valve body 1 has an externally threaded tube section with one end extending, which can be screwed into the inner cavity of the tubular structure and against the tetrafluoro gasket 6, thereby improving the tightness of the device. In another embodiment, a third female union may be provided on the fluid inlet of the three-way needle valve body, with the top of the meter bend screwed into the interior cavity of the third female union and against the tetrafluoro gasket.
The threaded loose-joint interface in this embodiment is composed of a loose-joint nut with internal threads, wherein the first internal threaded loose-joint interface 11 is a G1/2 internal threaded loose-joint nut, the second internal threaded loose-joint interface 12 is a G1/4 internal threaded loose-joint nut, and the third internal threaded loose-joint interface 13 is a loose-joint nut with a specification of m20×1.5.
The middle section of the meter bend 2 is spiral, the two ends are straight-line sections, an included angle formed between the two ends is 90 degrees or 180 degrees, and the meter bend can be selected from 90 degrees or 180 degrees according to the installation environment. In order to increase the structural strength of the surface bend 2, the pipe diameter of the surface bend 2 is phi 14 x 2mm, stainless steel 201 is adopted, damage caused by vibration is avoided, and stability of the device in the transportation process is guaranteed.
As shown in fig. 4, the present application further provides a pipeline pressure detection system, which includes the three-way needle valve device, wherein the first internal thread loose joint interface 11 is connected with the pressure gauge 4, and the second internal thread loose joint interface 12 is connected with the pressure transmitter 5. The staff installs pipeline pressure detecting system on the pipeline pressure measuring point, and connects the pressure gauge and the pressure transmitter through the adjusting hand wheel 3.
The above-described embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (7)
1. A three-way needle valve device, comprising:
a first fluid outlet of the three-way needle valve body is provided with a first internal thread loose joint interface for connecting with a pressure gauge, and a second fluid outlet of the three-way needle valve body is provided with a second internal thread loose joint interface; and
the meter bend is communicated with the fluid inlet of the three-way needle valve body, and a third internal thread loose joint interface is arranged at the top of the meter bend and is in threaded connection with the fluid inlet of the three-way needle valve body.
2. The three-way needle valve device of claim 1, wherein an adjusting hand wheel is disposed on the other side of the three-way needle valve body relative to the second internal thread loose-joint interface.
3. The three-way needle valve device of claim 1, wherein the third female loose-joint interface is a tubular structure for receiving a tetrafluoro gasket in an interior cavity of the tubular structure.
4. The three-way needle valve device of claim 1, wherein the bottom of the meter bend is plug welded to the pipeline pressure measurement point.
5. The three-way needle valve device according to claim 1, wherein the middle section of the surface bend is spiral, the two ends are straight sections, and an included angle formed between the two straight sections is 90 ° or 180 °.
6. The three-way needle valve device of claim 5, wherein the gauge is 14 x 2mm in tube diameter.
7. A pipeline pressure detection system comprising a three-way needle valve assembly according to any one of claims 1-6, wherein the first internally threaded loose-joint interface is coupled to a pressure gauge and the second internally threaded loose-joint interface is coupled to a pressure transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320251085.5U CN219388681U (en) | 2023-02-09 | 2023-02-09 | Three-way needle valve device and pipeline pressure detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320251085.5U CN219388681U (en) | 2023-02-09 | 2023-02-09 | Three-way needle valve device and pipeline pressure detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219388681U true CN219388681U (en) | 2023-07-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320251085.5U Active CN219388681U (en) | 2023-02-09 | 2023-02-09 | Three-way needle valve device and pipeline pressure detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219388681U (en) |
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2023
- 2023-02-09 CN CN202320251085.5U patent/CN219388681U/en active Active
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