Convenient connection type pressure measuring tool for simple pressure regulating equipment without pressure measuring port

Abstract

The invention discloses a conveniently-connected pressure measuring tool for simple pressure regulating equipment without a pressure measuring port, which comprises a pipeline, the pressure measuring port and a pressure measuring port opening tool, and is characterized in that the pressure measuring port opening tool comprises a valve body, a spring, a pressure spring component, a valve port and a pressure measuring joint; the valve body comprises a first cylinder section, a second cylinder section and a third cylinder section which are sequentially connected from top to bottom, and the outer diameters of the first cylinder section, the second cylinder section and the third cylinder section are the same. The spring is arranged in the second cylinder section, the valve port is formed in the bottom of the first cylinder section and can seal a fluid channel between the third cylinder section and the first cylinder section, the pressure spring component is arranged between the valve port and the spring in a sliding mode, and at least part of the pressure spring component is arranged in the fluid channel of the valve port; the pressure measuring connector is detachably connected with the first cylinder section, and a closed fluid containing cavity can be formed between the pressure measuring connector and the valve body. The pressure measuring device can help existing simple pressure regulating equipment without a pressure measuring port to measure the pressure.

Description

Technical Field

[0001] This invention relates to the field of pipeline pressure testing technology, and in particular to a portable pressure testing tool for simple pressure regulating devices without pressure testing ports. Background Technology

[0002] In the early stages of the urban gas industry, due to the lack of comprehensive design specifications and safety standards, some areas installed simple pressure regulating devices without pressure measuring ports, prioritizing cost control and structural simplification. With the continuous upgrading of mandatory standards, such devices can no longer meet the requirements of modern gas safety management. According to statistics from one company, the cost of replacing a single new pressure regulator is approximately 1300 yuan. Large-scale replacements would place significant financial pressure on the company. Maintaining the status quo, however, would prevent real-time monitoring of the regulator's shut-off and operating pressures, posing a major safety hazard of overpressure damage to downstream pipelines, instruments, and gas appliances.

[0003] To reduce modification costs, a pressure testing port can be welded directly to the outlet of the pressure regulator. This allows for regular and accurate measurement of the regulator's shut-off and operating pressures, preventing downstream pipelines, instruments, and appliances from exceeding design pressures and causing safety accidents. However, directly adding a pressure testing port to the downstream pipe fittings of the regulator can introduce new safety risks and make management more difficult. Firstly, the pipes downstream of simple pressure regulators are often galvanized, and welding on galvanized pipes is not easy to prevent corrosion, increasing the risk of leakage. Secondly, directly adding a pressure testing port also poses a risk of gas theft, causing losses to the company.

[0004] Therefore, providing a convenient pressure testing tool that is structurally safe, economical to manufacture, and reduces company risks is of great significance for completing pressure measurement of simple gas pressure regulators, improving gas usage safety, and promoting the healthy development of gas companies (especially rural gas companies). Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a convenient pressure testing tool for simple pressure regulating devices without a pressure testing port.

[0006] The technical solution of the present invention is as follows: A portable pressure testing tool for a simple pressure regulating device without a pressure testing port includes a pipe, a pressure testing port, and a pressure testing port opening tool. The pipe is connected to the simple pressure regulating device, the pressure testing port is disposed on the pipe, and the pressure testing port opening tool is connected to the pipe through the pressure testing port. The pressure testing port opening tool includes a valve body, a spring, a compression spring component, a valve port, and a pressure testing connector. The valve body includes three cylindrical sections connected from top to bottom, each with the same outer diameter and decreasing inner diameter. The spring is disposed inside the second cylindrical section, the valve port is disposed at the bottom of the first cylindrical section and can close the fluid channel between the third cylindrical section and the first cylindrical section, the compression spring component is slidably disposed between the valve port and the spring and is at least partially disposed in the fluid channel of the valve port, and when the spring is in a natural extension state, the compression spring component can close the fluid channel between the third cylindrical section and the valve port. The pressure testing connector is detachably connected to the first cylindrical section, and a sealed fluid receiving cavity can be formed between the pressure testing connector and the valve body. When pressure testing is required, at least part of the bottom of the pressure testing connector enters the fluid channel of the valve port, causing the compression spring component to move down and compress the spring, opening the fluid channel between the third cylindrical section and the valve port, allowing fluid to enter the fluid receiving cavity, and connecting the fluid to an external pressure testing device through the fluid channel of the pressure testing connector for pressure testing.

[0007] Preferably, the pressure testing port opening tool is detachably connected to the pipeline through the pressure testing port.

[0008] Preferably, the pressure testing port opening tool also includes a plug, which is detachably connected to the cylindrical section when pressure testing is not required.

[0009] Preferably, the compression spring component includes a force-bearing section, a cylindrical section one, and a cylindrical section two arranged coaxially from top to bottom, and the valve port includes a cylindrical section four and a cylindrical section five arranged coaxially from bottom to top. The maximum outer diameter of the stress-bearing section is the same as the outer diameter of the first cylindrical section, the outer diameter of the first cylindrical section is smaller than the inner diameter of the fourth cylindrical section, and the outer diameter of the second cylindrical section matches the inner diameter of the second cylindrical section. The inner diameters of the fourth and fifth cylindrical sections are the same and smaller than the inner diameter of the second cylindrical section. The outer diameter of the fourth cylindrical section matches the inner diameter of the first cylindrical section and is larger than the outer diameter of the fifth cylindrical section.

[0010] Preferably, the force-bearing segment is any one of a cylindrical segment, a frustum segment, a conical segment, a pyramidal segment, or a prism segment.

[0011] Preferably, a sealing ring is provided between the bottom of the fourth cylindrical section and the top of the second cylindrical section.

[0012] Preferably, a sealing ring 2 is provided between the bottom of the cylindrical section 5 and the top of the cylindrical section 2.

[0013] Preferably, the pressure testing connector includes a connecting section and a force-applying section arranged coaxially from top to bottom, and the lower end of the connecting section is detachably connected to the cylindrical section. The maximum outer diameter of the force-applying section is smaller than the inner diameter of the cylindrical section four. The center of the pressure measuring connector is provided with a fluid channel one, and the side wall of the force-applying section is provided with a fluid channel two that penetrates the force-applying section and communicates with the fluid channel one.

[0014] Preferably, two fluid channels are arranged symmetrically about the central axis of the force-applying section.

[0015] Preferably, the inner wall of the first cylindrical section is provided with internal threads, and both the pressure testing connector and the valve port are threadedly connected to the first cylindrical section.

[0016] The beneficial effects of this invention are: This invention provides a safe, economical, and aesthetically pleasing portable pressure testing tool, facilitating pressure testing of simple pressure regulating devices without a pressure testing port. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the portable pressure testing tool of the present invention; Figure 2 This is a three-dimensional cross-sectional structural diagram of the pressure measuring port opening tool of the portable pressure measuring tool of the present invention; Figure 3 This is a three-dimensional perspective structural diagram of the valve body of the portable pressure measuring tool of the present invention; Figure 4 This is a three-dimensional perspective structural diagram of the compression spring component of the portable pressure measuring tool of the present invention; Figure 5 This is a three-dimensional perspective structural diagram of the valve port of the portable pressure measuring tool of the present invention; Figure 6 This is a three-dimensional perspective structural diagram of the pressure testing connector of the portable pressure testing tool of the present invention; Figure 7 This is a three-dimensional perspective structural diagram of the plug of the convenient pressure measuring tool of the present invention.

[0019] Numbering on the map: 1-Pipeline, 2-Pressure test port, 3-Pressure test port opening tool, 4-Valve body, 5-Spring, 6-Compression spring component, 7-Valve port, 8-Pressure test connector, 9-Fluid receiving cavity, 10-Plug, 11-Sealing ring one, 12-Sealing ring two, 13-Fluid channel one, 14-Fluid channel two. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and technical features described in this application can be combined with each other. It should also be pointed out that, unless otherwise indicated, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terms "comprising" or "including" and similar words used in this invention refer to elements or objects preceding the word that encompass the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0021] like Figure 1-7 As shown, the present invention provides a portable pressure testing tool for a simple pressure regulating device without a pressure testing port, including a pipe 1, a pressure testing port 2, and a pressure testing port opening tool 3. The pipe 1 is connected to the simple pressure regulating device, the pressure testing port 2 is disposed on the pipe 1, and the pressure testing port opening tool 3 is connected to the pipe 1 through the pressure testing port 2. The pressure testing port opening tool 3 includes a valve body 4, a spring 5, a compression spring component 6, a valve port 7, and a pressure testing connector 8. The valve body 4 includes three cylindrical sections connected from top to bottom, each with the same outer diameter and decreasing inner diameter. The spring 5 is disposed inside the second cylindrical section, the valve port 7 is disposed at the bottom of the first cylindrical section and can close the fluid channel between the third cylindrical section and the first cylindrical section, the compression spring component 6 is slidably disposed between the valve port 7 and the spring 5 and is at least partially disposed within the fluid channel of the valve port 7, when the spring 5 is in a natural extension and contraction state, the compression spring component 6 can close the fluid channel between the third cylindrical section and the valve port 7; The pressure testing connector 8 is detachably connected to the first cylindrical section, and a sealed fluid receiving cavity 9 can be formed between the pressure testing connector 8 and the valve body 4. When pressure testing is required, at least part of the bottom of the pressure testing connector 8 enters the fluid channel of the valve port 7, causing the spring component 6 to move down and compress the spring 5, opening the fluid channel between the third cylindrical section and the valve port 7, allowing fluid to enter the fluid receiving cavity 9, and connecting the fluid to an external pressure testing device through the fluid channel of the pressure testing connector 8 for pressure testing.

[0022] When using this invention, both ends of the pipe 1 are connected to the pipes of a simple pressure regulating device, and then the pressure testing connector 8, which is connected to an external pressure testing device, is connected to the valve body 4. Before the bottom of the pressure testing connector 8 contacts the spring component 6, the spring 5 is in a naturally extended state. At this time, the fluid passage between the cylindrical section three and the valve port 7 is closed, and the side wall connecting the valve port 7 and the cylindrical section one is also sealed, so the fluid will not enter the fluid receiving cavity 9.

[0023] The pressure testing connector 8 continues to move downwards until at least part of its bottom portion enters the fluid channel of the valve port 7, applying a force to the compression spring component 6 to compress the spring 5, thus opening the fluid channel between the third cylindrical section and the valve port 7. At this point, the side wall connecting the pressure testing connector 8 to the first cylindrical section is sealed, and fluid enters the fluid receiving cavity 9. Then, through its own fluid channel, the pressure testing connector 8 connects the fluid receiving cavity 9 to an external pressure testing device, thus achieving pressure measurement. Optionally, the external pressure testing device is a U-shaped water column pipe.

[0024] This invention enables pressure testing of simple pressure regulating devices without additional pressure testing ports. Furthermore, the pressure testing port opening tool 3 of this invention has a specially designed internal structure that keeps the fluid passage closed when no pressure is applied to the spring component 6, thus largely preventing gas theft.

[0025] In one specific embodiment, the pressure testing port opening tool 3 is detachably connected to the pipe 1 via the pressure testing port 2. In this embodiment, by setting the pressure testing port opening tool 3 to be detachably connected to the pipe 1, it is convenient to replace the pressure testing port opening tool 3.

[0026] In another specific embodiment, the pressure testing port opening tool 3 is fixedly connected to the pipeline 1. In this embodiment, by setting the pressure testing port opening tool 3 to be fixedly connected to the pipeline 1, the sealing performance of the portable pressure testing tool of the present invention can be increased, and the risk of pipeline leakage can be reduced.

[0027] In one specific embodiment, the pressure testing port opening tool 3 further includes a plug 10, which is detachably connected to the cylindrical section when pressure testing is not required. In this embodiment, by providing the plug 10, the sealing performance of the portable pressure testing tool can be further improved when pressure testing is not required, thus preventing gas leakage.

[0028] In one specific embodiment, the compression spring component 6 includes a force-bearing section, a cylindrical section one, and a cylindrical section two arranged coaxially from top to bottom, and the valve port 7 includes a cylindrical section four and a cylindrical section five arranged coaxially from bottom to top. The maximum outer diameter of the stress-bearing section is the same as the outer diameter of the first cylindrical section, the outer diameter of the first cylindrical section is smaller than the inner diameter of the fourth cylindrical section, and the outer diameter of the second cylindrical section matches the inner diameter of the second cylindrical section. The inner diameters of the fourth and fifth cylindrical sections are the same and smaller than the inner diameter of the second cylindrical section. The outer diameter of the fourth cylindrical section matches the inner diameter of the first cylindrical section and is larger than the outer diameter of the fifth cylindrical section.

[0029] In one specific embodiment, the force-bearing segment is any one of a cylindrical segment, a frustum segment, a conical segment, a pyramidal segment, and a prism segment. Optionally, the force-bearing segment is a conical segment. When subjected to force, point force can increase positioning accuracy, while surface force can increase stability; both are applicable to this invention. Furthermore, using structures such as frustum segments and conical segments can reduce the volume of the force-bearing segment, making it easier for fluid to pass through.

[0030] In one specific embodiment, a sealing ring 11 is provided between the bottom of the fourth cylindrical section and the top of the second cylindrical section, and a sealing ring 12 is provided between the bottom of the fifth cylindrical section and the top of the second cylindrical section. In this embodiment, by adding sealing rings, the sealing performance can be further improved. Specifically, the sealing ring 11 prevents fluid from entering the fluid receiving cavity 9 from the side wall connected to the first cylindrical section from the valve port 7, and the sealing ring 12 prevents fluid from entering the fluid receiving cavity 9 from the fluid channel of the valve port 7 when the spring member 6 is not under force.

[0031] In one specific embodiment, the pressure testing connector 8 includes a connecting section and a force-applying section arranged coaxially from top to bottom, and the lower end of the connecting section is detachably connected to the cylindrical section. The maximum outer diameter of the force-applying section is smaller than the inner diameter of the cylindrical section four. The pressure measuring connector 8 has a fluid channel 13 at its center, and the side wall of the force-applying section has a fluid channel 14 that penetrates the force-applying section and communicates with the fluid channel 13. Optionally, two fluid channels 14 are symmetrically arranged about the central axis of the force-applying section.

[0032] In one specific embodiment, the pressure testing connector 8 includes a cylindrical section six, a cylindrical section seven, a cylindrical section eight, and a cylindrical section three arranged coaxially from top to bottom. The inner diameters of the cylindrical sections six, seven, and eight are the same. The outer diameter of the cylindrical section six is ​​smaller than the outer diameter of the cylindrical section seven but larger than the outer diameter of the cylindrical section eight. The outer diameter of the cylindrical section eight is the same as the outer diameter of the cylindrical section three but smaller than the inner diameter of the cylindrical section four. The lower part of the cylindrical section seven is provided with an external thread, which is threadedly connected to the cylindrical section one. The side wall of the cylindrical section eight is provided with the fluid channel two 14.

[0033] Optionally, two rectangular surfaces are vertically cut at the upper left and right ends of the threaded section of the cylindrical segment to form a step with the threaded section. In this embodiment, this structure facilitates tightening of the pressure testing connector 8 using a wrench or similar tool.

[0034] In one specific embodiment, the inner wall of the first cylindrical section is provided with internal threads, and the pressure testing connector 8, valve port 7, and plug 10 are all connected to the first cylindrical section via threads. Optionally, the upper surface of the valve port 7 is symmetrically provided with two recessed holes about the valve port 7, which allow the valve port 7 to be easily screwed into or out of the first cylindrical section using tools such as needle-nose pliers.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A portable pressure testing tool for simple pressure regulating devices without a pressure testing port, characterized in that, It includes a pipe, a pressure testing port, and a pressure testing port opening tool. The pipe is connected to the simple pressure regulating device, the pressure testing port is set on the pipe, and the pressure testing port opening tool is connected to the pipe through the pressure testing port. The pressure testing port opening tool includes a valve body, a spring, a compression spring component, a valve port, and a pressure testing connector. The valve body includes three cylindrical sections connected from top to bottom, each with the same outer diameter and decreasing inner diameter. The spring is disposed inside the second cylindrical section, the valve port is disposed at the bottom of the first cylindrical section and can close the fluid channel between the third cylindrical section and the first cylindrical section, the compression spring component is slidably disposed between the valve port and the spring and is at least partially disposed in the fluid channel of the valve port, and when the spring is in a natural extension state, the compression spring component can close the fluid channel between the third cylindrical section and the valve port. The pressure testing connector is detachably connected to the first cylindrical section, and a sealed fluid receiving cavity can be formed between the pressure testing connector and the valve body. When pressure testing is required, at least part of the bottom of the pressure testing connector enters the fluid channel of the valve port, causing the compression spring component to move down and compress the spring, opening the fluid channel between the third cylindrical section and the valve port, allowing fluid to enter the fluid receiving cavity, and connecting the fluid to an external pressure testing device through the fluid channel of the pressure testing connector for pressure testing.

2. The portable pressure testing tool for a simple pressure regulating device without a pressure testing port as described in claim 1, characterized in that, The pressure testing port opening tool is detachably connected to the pipeline through the pressure testing port.

3. The portable pressure testing tool for simple pressure regulating devices without a pressure testing port as described in claim 1, characterized in that, The pressure testing port opening tool also includes a plug, which is detachably connected to the cylindrical section when pressure testing is not required.

4. The portable pressure testing tool for a simple pressure regulating device without a pressure testing port as described in claim 1, characterized in that, The compression spring component includes a force-bearing section, a cylindrical section one, and a cylindrical section two arranged coaxially from top to bottom, and the valve port includes a cylindrical section four and a cylindrical section five arranged coaxially from bottom to top. The maximum outer diameter of the stress-bearing section is the same as the outer diameter of the first cylindrical section, the outer diameter of the first cylindrical section is smaller than the inner diameter of the fourth cylindrical section, and the outer diameter of the second cylindrical section matches the inner diameter of the second cylindrical section. The inner diameters of the fourth and fifth cylindrical sections are the same and smaller than the inner diameter of the second cylindrical section. The outer diameter of the fourth cylindrical section matches the inner diameter of the first cylindrical section and is larger than the outer diameter of the fifth cylindrical section.

5. The portable pressure testing tool for a simple pressure regulating device without a pressure testing port as described in claim 4, characterized in that, The force-bearing segment can be any one of the following: cylindrical segment, frustum segment, conical segment, pyramidal segment, or prism segment.

6. The portable pressure testing tool for a simple pressure regulating device without a pressure testing port as described in claim 4, characterized in that, A sealing ring is provided between the bottom of the fourth cylindrical section and the top of the second cylindrical section.

7. The portable pressure testing tool for a simple pressure regulating device without a pressure testing port as described in claim 4, characterized in that, A sealing ring 2 is provided between the bottom of the cylindrical section 5 and the top of the cylindrical section 2.

8. The portable pressure testing tool for a simple pressure regulating device without a pressure testing port as described in claim 4, characterized in that, The pressure testing connector includes a connecting section and a force-applying section arranged coaxially from top to bottom, and the lower end of the connecting section is detachably connected to the cylindrical section. The maximum outer diameter of the force-applying section is smaller than the inner diameter of the cylindrical section four. The center of the pressure measuring connector is provided with a fluid channel one, and the side wall of the force-applying section is provided with a fluid channel two that penetrates the force-applying section and communicates with the fluid channel one.

9. The portable pressure testing tool for a simple pressure regulating device without a pressure testing port as described in claim 8, characterized in that, Two fluid channels are arranged symmetrically about the central axis of the force application section.

10. The portable pressure testing tool for a simple pressure regulating device without a pressure testing port, as described in any one of claims 1-9, is characterized in that... The inner wall of the first cylindrical section is provided with internal threads, and the pressure testing connector and the valve port are both threadedly connected to the first cylindrical section.

Images