Gas under-pressure installation temperature measuring device

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By using a sealing structure with flanged short-circuit and ball valve inside the gas pipeline, the problems of low accuracy and leakage risk in gas pipeline temperature monitoring are solved, realizing an efficient and safe online temperature measurement device, ensuring the safety of gas transportation and production efficiency.

CN223769646UActive Publication Date: 2026-01-06BENXI BEIYING IRON & STEEL GROUP

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Patent Information

Application Number: CN202520265248.4
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-02-19
Publication Date: 2026-01-06
Estimated Expiration: 2035-02-19

AI Technical Summary

Technical Problem

In existing technologies, the accuracy of gas temperature monitoring in gas pipelines is low, and there is a risk of gas leakage during online installation and monitoring, which affects construction safety and production efficiency.

Method used

A ball valve with a flanged short-circuit connection is used. The temperature measuring rod of the temperature measuring thermal resistor extends into the gas pipeline through the valve hole of the ball valve core, and is sealed by a sealing ring and a sealing cap to prevent gas leakage. The ball valve closes immediately when the temperature measurement ends or when it is damaged to prevent leakage.

Benefits of technology

It enables high-precision online gas temperature monitoring, reduces the risk of gas leaks, improves construction safety and production efficiency, and ensures the safety of surrounding personnel.

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Abstract

The utility model relates to a gas under-pressure installation temperature measuring device which comprises a short circuit with a flange, a ball valve, a sealing ring, a sealing transparent cover, a sealing back cap, a temperature measuring thermal resistor, a temperature measuring rod and a temperature measuring contact, the short circuit with the flange is arranged at an opening of the pipe wall of a gas pipeline, one end of the short circuit with the flange is connected with the ball valve flange, and the other end of the short circuit with the flange is connected with the ball valve flange. A through hole for the temperature measuring rod to pass through is formed in the sealing transparent cover, a connecting boss is arranged on the periphery of the through hole in the top face of the sealing transparent cover, a sealing back cap is arranged on the connecting boss, a temperature measuring thermal resistor is arranged on the top of the temperature measuring rod, and a temperature measuring contact is arranged at the front end of the temperature measuring rod. The utility model has the beneficial effects that the monitoring and temperature measuring device is mounted on line, the gas pipeline outputs continuously, the gas production efficiency is improved, the gas monitoring and temperature measuring are accurate, the monitoring degree is high, the sealing performance is good, the monitoring and temperature measuring safety is high, and the surrounding environment of the gas pipeline is good.

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Description

Technical Field

[0001] This utility model relates to the field of gas live temperature measurement technology, and in particular to a gas live temperature measurement device. Background Technology

[0002] Combustible gas is transported through gas pipelines. Abnormal gas temperature within the pipeline is a significant factor leading to gas safety accidents. The gas temperature within the pipeline needs to be monitored in real time. However, due to the sealed nature of gas pipelines, traditional gas temperature monitoring typically relies on monitoring the surface temperature of the pipeline and the temperature of the surrounding environment. This method results in low accuracy and a low level of gas safety monitoring.

[0003] To measure the temperature of gas in a gas pipeline, a resistance temperature detector (RTD) needs to be installed on the pipeline. The RTD needs to be inserted into the gas pipeline to monitor the gas temperature. However, since most gas production conditions do not allow for shutting down the gas supply, installation and monitoring can only be carried out online. During the installation and monitoring process, serious gas leaks occur, endangering the personal safety of the installation and monitoring personnel. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a gas pressure-installed temperature measuring device. It utilizes a ball valve with a flanged short-connection. The temperature measuring rod of a temperature-measuring resistance thermometer passes through the valve hole of the ball valve core and extends into the gas pipeline. The other end of the ball valve is equipped with a sealing ring and a sealing cap that overlap to prevent gas leakage during temperature monitoring, thus improving sealing performance and providing a good sealing effect. When temperature monitoring ends or if the monitoring device malfunctions, the temperature measuring rod is pulled out of the gas pipeline, and the ball valve immediately closes to prevent gas leakage and improve the safety of the gas pipeline.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A gas pressure-installed temperature measuring device includes a flanged short connector, a ball valve, a sealing ring, a sealing cover, a sealing back cap, a temperature measuring resistor, a temperature measuring rod, and a temperature measuring contact. The flanged short connector is installed at the opening of the gas pipeline wall. One end of the flanged short connector is connected to the ball valve flange, and the other end of the ball valve is connected to the sealing cover flange. The sealing cover has a through hole for the temperature measuring rod to pass through. Connecting bosses are provided around the through hole on the top surface of the sealing cover, and sealing back caps are provided on the connecting bosses. The temperature measuring resistor is provided at the top of the temperature measuring rod, and a temperature measuring contact is provided at the front end of the temperature measuring rod. A sealing ring is provided at the connection position between the ball valve and the sealing cover flange.

[0007] Furthermore, the ball valve includes a connecting flange, a valve core, and a sealing flange, wherein the connecting flange is connected to a flange short circuit, and the sealing flange is connected to a sealing cover.

[0008] Furthermore, both the connecting flange and the sealing flange are provided with through holes for the temperature measuring rod to pass through.

[0009] Furthermore, the valve core has a valve orifice diameter greater than or equal to the temperature measuring rod diameter.

[0010] Furthermore, the flanged short connector includes a short pipe and a flange. The short pipe is connected to the pipe wall at the opening of the gas pipe, and a flange is provided at the top of the short pipe. The flange is connected to the connecting flange of the ball valve.

[0011] Furthermore, the flange has a through hole through which a temperature measuring rod passes.

[0012] Furthermore, the sealing cap has a through hole at its center for the temperature measuring rod to pass through, and a sealing ring is provided around the circumference of the hole wall. The sealing ring is made of elastic material and its inner diameter is 1-2 mm smaller than the diameter of the temperature measuring rod.

[0013] Furthermore, the sealing ring has a through hole at its center for the temperature measuring rod to pass through, and the through hole at the center of the sealing ring is interference-fitted with the temperature measuring rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1) Effectively solves the problem of pressurized installation of gas temperature measurement, avoiding the problem of construction being affected by the inability to stop production due to production conditions. The online installation of monitoring and temperature measurement devices reduces gas leakage, ensures continuous output of gas pipelines, and improves gas production efficiency.

[0016] 2) The gas monitoring and temperature measuring rod extends into the gas pipeline, ensuring accurate gas temperature monitoring and a high degree of monitoring, thus improving the safety of gas transportation.

[0017] 3) When the temperature monitoring ends or the monitoring device is damaged, the temperature measuring rod can be freely pulled out of the gas pipeline, and the ball valve will be closed immediately to prevent gas leakage, improve the safety of the gas pipeline, and protect the personal safety of the surrounding operators.

[0018] 4) The overlapping of the sealing gasket and the sealing cap prevents gas leakage during the temperature measurement process, improves the sealing performance, ensures good sealing effect, enhances the safety of temperature monitoring, improves the environment around the gas pipeline, and increases the safety of surrounding personnel. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a gas pressure-controlled temperature measuring device according to the present invention.

[0020] Figure 2 This is a schematic diagram of the sealing and transparent cover structure described in this utility model.

[0021] Figure 3 This is a schematic diagram of the sealing cap structure described in this utility model.

[0022] In the diagram: 1. Gas pipeline; 2. Flanged short joint; 3. Ball valve; 4. Sealing cover; 5. Sealing ring; 6. Sealing cap; 7. Temperature measuring resistance thermometer; 8. Temperature measuring rod; 9. Temperature measuring contact; 21. Short pipe; 22. Flange; 31. Sealing flange; 32. Valve core; 33. Connecting flange; 41. Connecting boss; 61. Sealing retaining ring. Detailed Implementation

[0023] The specific embodiments of this utility model are further described below:

[0024] In the description of this patent, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "over," "on the upper surface," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 80 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly. Unless otherwise stated, the above terms have no special meaning and should not be construed as limiting the scope of protection of this utility model.

[0026] like Figures 1-3As shown, the working principle of a gas pressure-controlled temperature measuring device is as follows: A ball valve 3 is connected via a flanged short-circuit 2. The temperature measuring rod 8 of the temperature measuring resistance thermometer 7 passes through the valve hole of the valve core 32 of the ball valve 3 and extends into the gas pipeline 1. The sealing cap 6 limits the length of the temperature measuring rod 8 extending into the gas pipeline 1, so that the temperature measuring rod 8 extends into the center position of the gas pipeline 1, making the temperature monitoring more accurate. The other end of the ball valve 3 is equipped with a sealing ring 5 and a sealing back cap 6 overlapping to seal and prevent gas leakage during the temperature monitoring process, improving the sealing performance and sealing effect. When the temperature monitoring ends or the monitoring device is damaged, the temperature measuring rod 8 is pulled out of the gas pipeline, and the ball valve 3 immediately closes to prevent gas leakage and improve the safety of the gas pipeline 1.

[0027] like Figures 1-3 As shown, a gas pressure-installed temperature measuring device includes a flanged short connector 2, a ball valve 3, a sealing ring 5, a sealing cover 4, a sealing back cap 6, a temperature measuring resistance thermometer 7, a temperature measuring rod 8, and a temperature measuring contact 9. The flanged short connector 2 is installed at the opening in the outer wall of the gas pipeline 1. The outer wall of the gas pipeline 1 is open, and the flanged short connector 2 is welded to the outer wall of the gas pipeline 1, so that the temperature measuring device can be directly inserted into the gas pipeline 1 through the flanged short connector 2. One end of the flanged short connector 2 is connected to the ball valve 3. The ball valve 3 is connected to the flange of the sealing cover 4 at the other end. The sealing cover 4 has a through hole through which the temperature measuring rod 8 passes. The ball valve 3, the flanged short connector 2, and the sealing cover 4 are coaxially connected. The temperature measuring rod 8 of the temperature measuring device can be inserted into the gas pipeline 1 through it. The top surface of the sealing cover 4 has connecting bosses 41 around the through hole. A sealing cap 6 is set on the connecting bosses 41. The sealing cap 6 has a through hole in its center. An elastic sealing ring 61 is provided around the through hole of the sealing cap 6. During the tightening of the cap 6 and the sealing cover 4, the temperature measuring rod 8 passes through the sealing fixing ring 61. The inner diameter of the sealing fixing ring 61 is 2mm smaller than that of the temperature measuring rod, increasing the friction between the sealing fixing ring 61 and the temperature measuring rod 8. The friction force fixes the temperature measuring rod 8 vertically. The deformation of the sealing fixing ring 61 also plays a sealing role, improving the sealing performance, preventing gas leakage, and improving the safety of temperature monitoring. The top of the temperature measuring rod 8 is equipped with a temperature measuring resistance 7. During temperature monitoring, the temperature measuring rod 8 passes through the sealing cap 6, the sealing cover 4, the ball valve 3, and the flanged short-circuit 2 in sequence. The temperature measuring contact 9 at the front end of the temperature measuring rod 8 is inserted into the gas pipeline 1. The temperature measuring contact 9 and the gas in the gas pipeline 1 directly contact the gas for temperature monitoring, resulting in more accurate temperature data and stronger monitoring. The ball valve 3 and the flange connection of the sealing cover 4 are equipped with a sealing ring 5. The sealing ring 5 is set between the sealing flange 31 of the ball valve 3 and the sealing cover 4, forming a double seal with the sealing cap 6 on the outside of the sealing cover 4, improving the sealing performance and preventing gas leakage.

[0028] Furthermore, the ball valve 3 includes a connecting flange 33, a valve core 32, and a sealing flange 31. The connecting flange 33 is connected to a flange short circuit 2, and the sealing flange 31 is connected to a sealing cover 4.

[0029] Furthermore, both the connecting flange 33 and the sealing flange 31 are provided with through holes through which the temperature measuring rod 8 passes.

[0030] Furthermore, the valve orifice diameter of the valve core 32 is greater than or equal to the diameter of the temperature measuring rod 8.

[0031] Furthermore, the flanged short connector 2 includes a short pipe 21 and a flange 22. The short pipe 21 is connected to the pipe wall at the opening of the gas pipeline 1, and the top of the short pipe 21 is provided with a flange 22, which is connected to the connecting flange 33 of the ball valve 3.

[0032] Furthermore, the flange 22 has a through hole through which the temperature measuring rod 8 passes.

[0033] Furthermore, the sealing cap 6 has a through hole at its center through which the temperature measuring rod 8 passes, and a sealing ring 61 is provided around the circumference of the hole wall. The sealing ring 61 is made of elastic material and its inner diameter is 2mm smaller than the diameter of the temperature measuring rod 8.

[0034] Furthermore, the sealing ring 5 has a through hole in the center through which the temperature measuring rod 8 passes. The through hole in the center of the sealing ring 5 is interference-fitted with the temperature measuring rod 8. The sealing ring 5 is made of sealing material and has a certain degree of elasticity. In order to improve the sealing performance, the through hole in the sealing ring 5 and the temperature measuring rod 8 are interference-fitted to improve the sealing performance of the sealing ring.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

[0036] [Example] As shown Figures 1-3 As shown, a measuring point is selected on the gas pipeline 1, and a DN50 short pipe 2 with a flange is welded. One end of the DN50 short pipe 21 with the flange 2 is welded to the outer wall of the gas pipeline 1, and the other end of the DN50 short pipe 21 is welded with a flange 22. The flange 22 is connected to the flange of the ball valve 3. The ball valve 3 is provided with a connecting flange 33 and a sealing flange 31 on both sides. The flange 22 with the flange 2 is connected to the connecting flange 33 of the ball valve 3.

[0037] Using an online drilling device, a hole is drilled in the gas pipeline 1 inside the short pipe 21 with flange connection 2. The hole diameter is DN40. After drilling, the ball valve 3 is closed to prevent gas leakage.

[0038] The other end of the ball valve 3 is sealed by flange 31 and connected to sealing cover 4. The top surface of sealing cover 4 has a connecting boss 41 around the through hole. A sealing back cap 6 is set on the connecting boss 41. The sealing back cap 6 is threadedly connected to the connecting boss 41. Flange 22, connecting flange 33, sealing flange 31, sealing cover 4 and sealing back cap 6 are all provided with through holes in their centers. The measuring rod 8 can pass through the through holes. The top of the measuring rod 8 is provided with a temperature measuring resistance 7. The measuring rod 8 passes through sealing back cap 6, sealing cover 4, ball valve 3 and flanged short circuit 2. The temperature measuring contact 9 at the front end of the measuring rod 8 passes through the opening on the gas pipeline wall and enters the gas pipeline 1.

[0039] The sealing cap 6 has a through hole at its center for the temperature measuring rod 8 to pass through. A sealing ring 61 is provided around the circumference of the hole wall. The sealing ring 61 is made of elastic material and its inner diameter is 2mm smaller than the diameter of the temperature measuring rod. The friction between the temperature measuring rod 8 and the sealing ring 61 fixes the temperature measuring rod 8 vertically. At this time, the temperature measuring contact 9 at the end of the temperature measuring rod 8 is just at the center line position inside the gas pipeline 1, making the gas temperature monitoring more accurate. A sealing ring 5 is provided at the flange connection position between the ball valve 3 and the sealing cover 4. A sealing cap 6 is provided on the outside of the sealing cover 4 for double sealing. The sealing position of the temperature measuring rod 8 is well sealed to prevent gas leakage and improve the safety of gas transportation.

Claims

1. A gas pressure-controlled temperature measuring device, comprising a flanged short connector, a ball valve, a sealing ring, a sealing cover, a sealing back cap, a temperature measuring resistance thermometer, a temperature measuring rod, and a temperature measuring contact, wherein the flanged short connector is disposed at an opening in the wall of a gas pipeline, characterized in that, The flange short pipe is connected with the flange of the ball valve at one end, and the ball valve is connected with the sealing cover flange at the other end.

2. The temperature measuring device for installation with pressure of coal gas according to claim 1, characterized in that, The ball valve comprises a connecting flange, a valve core and a sealing flange.

3. The temperature measuring device for coal gas installation under pressure according to claim 2, characterized in that, The connecting flange and the sealing flange are both provided with a through hole through which the temperature measuring rod passes.

4. The temperature measuring device for installation with pressure of coal gas according to claim 2, characterized in that, The diameter of the valve hole of the valve core is greater than or equal to the diameter of the temperature measuring rod.

5. The temperature measuring device for installation with pressure of coal gas according to claim 1, characterized in that, The flange short pipe comprises a short pipe and a flange.

6. The temperature measuring device for installation of coal gas under pressure according to claim 5, characterized in that, The flange is provided with a through hole through which the temperature measuring rod passes.

7. The temperature measuring device for installation with pressure of coal gas according to claim 1, characterized in that, The sealing back cap is provided with a through hole through which the temperature measuring rod passes.

8. The temperature measuring device for installation with pressure of coal gas according to claim 1, characterized in that, The sealing back cap is provided with a through hole through which the temperature measuring rod passes. The sealing back cap is provided with a through hole through which the temperature measuring rod passes.