Needle valve of gas pressure gauge

Abstract

The utility model discloses a needle valve of a gas pressure gauge, which comprises a pressure detection gauge arranged above a gas pipeline, and further comprises a needle valve assembly arranged between the gas pipeline and the pressure detection gauge and used for controlling the gas pressure state between the gas pipeline and the pressure detection gauge; and the fastening assembly is arranged at the upper end of the needle valve assembly and is used for fastening the pressure detection meter. According to the utility model, when the gas pressure in the gas pipeline is detected each time, only the needle valve assembly is controlled without stopping the gas supply of the pressure regulating equipment, so that the detection efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas pressure gauge technical field, concretely is a gas pressure gauge needle valve. BACKGROUND

[0002] At present, a gas pressure gauge is installed on the gas pressure regulating equipment, and according to the existing standard, the pressure gauge needs to be replaced twice a year, and the pressure regulating equipment needs to be stopped when replacing, which affects the user's gas use; in addition, most of the pressure regulating equipment currently used is cast iron material, and the threaded interface is prone to crack and damage during pressure gauge disassembly and installation, and there is a risk of gas leakage.

[0003] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as the closest prior art. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a gas pressure gauge needle valve to solve the problem of the existing gas pressure gauge in the prior art, which needs to be stopped when replacing, affecting the user's gas use, and in addition, the threaded connection port is prone to crack and damage during the disassembly and installation of the pressure gauge, and there is a risk of gas leakage.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A gas pressure gauge needle valve, comprising a pressure detection table arranged above a gas pipeline, further comprising:

[0007] A needle valve assembly is arranged between the gas pipeline and the pressure detection table for controlling the gas pressure state between the gas pipeline and the pressure detection table.

[0008] A fastening assembly is arranged at the upper end of the needle valve assembly for fastening the pressure detection table.

[0009] Further, the needle valve assembly comprises:

[0010] A rotating pipe is fixedly inserted into the upper end opening of the gas pipeline.

[0011] An external thread pipe is arranged on the outer side of the upper end of the rotating pipe for connecting the fastening assembly.

[0012] A valve block is fixedly inserted into the interior of the rotating pipe for plugging the gas in the rotating pipe.

[0013] A closing shaft is inserted into the interior of the valve block for controlling the opening and closing state of the valve block.

[0014] A knob is fixedly connected to one end of the closing shaft opposite to the valve block for rotating and adjusting the closing shaft.

[0015] Further, the valve block is internally provided with a guide groove for accommodating the sealing shaft, the diameter of the guide groove is matched with the inner diameter of the sealing shaft;

[0016] The valve block is internally provided with a guide groove for accommodating the sealing shaft, the diameter of the guide groove is matched with the inner diameter of the sealing shaft;

[0017] Further, the rotating pipe is externally provided with a first sleeve pipe for accommodating the sealing shaft, the inner wall of the first sleeve pipe is provided with threads;

[0018] The sealing shaft is externally provided with a threaded area, and the threaded area is threadedly connected with the first sleeve pipe.

[0019] Further, the fastening assembly comprises:

[0020] A third sleeve pipe is threadedly connected on the outside of the outer threaded pipe, and the inner wall of the third sleeve pipe is provided with threads matched with the outer threaded pipe;

[0021] A second sleeve pipe is fixedly connected on the upper end of the third sleeve pipe, and the inner wall of the second sleeve pipe is provided with threads.

[0022] Further, the lower end of the pressure detection table is fixedly connected with a screw rod, and the screw rod is threadedly connected with the second sleeve pipe.

[0023] Compared with the prior art, the utility model has the advantages that:

[0024] 1. The utility model discloses a needle valve assembly and a fastening assembly, which are used for detecting the gas pressure in a gas pipeline.

[0025] 2. The utility model discloses a needle valve assembly and a fastening assembly, which are used for detecting the gas pressure in a gas pipeline.

[0026] 3. The utility model discloses a needle valve assembly and a fastening assembly, which are used for detecting the gas pressure in a gas pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole structure schematic view of the utility model;

[0028] Figure 2 It is a cooperation relationship drawing of the needle valve assembly and the fastening assembly of the utility model;

[0029] Figure 3 It is a valve block mechanism schematic view of the utility model;

[0030] Figure 4 The figure shows the cooperation relationship between the vent hole and the closed shaft.

[0031] The figure shows the cooperation relationship between the vent hole and the closed shaft. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0033] The figure shows the cooperation relationship between the vent hole and the closed shaft. Figures 1-4 The present application provides a technical solution:

[0034] A needle valve is applied in the field of gas pressure gauges, comprising a pressure detection gauge 101 arranged above a gas pipeline 100, and further comprising:

[0035] A needle valve assembly 1 is arranged between the gas pipeline 100 and the pressure detection gauge 101, and is used for controlling the gas pressure state between the gas pipeline 100 and the pressure detection gauge 101.

[0036] A fastening assembly 2 is arranged at the upper end of the needle valve assembly 1, and is used for fastening the pressure detection gauge 101.

[0037] As an improvement, as shown in the figure, the needle valve assembly 1 comprises: Figures 1-2

[0038] A rotating pipe 11 is fixedly inserted into the upper end opening of the gas pipeline 100.

[0039] An externally threaded pipe 12 is arranged outside the upper end of the rotating pipe 11, and is used for connecting the fastening assembly 2.

[0040] A valve block 13 is fixedly inserted into the rotating pipe 11, and is used for plugging the gas in the rotating pipe 11.

[0041] A closed shaft 133 is inserted into the valve block 13, and is used for controlling the opening and closing state of the valve block 13.

[0042] ​The knob 134 is fixedly connected to one end of the closing shaft 133 opposite to the valve block 13 , and is used to rotate and adjust the closing shaft 133 .

[0043] Further, such as Figures 3-4 As shown, a guide groove 132 for accommodating a closed shaft 133 is provided in the middle of the valve block 13. The diameter of the guide groove 132 is adapted to the inner diameter of the closed shaft 133.

[0044] A vent hole 131 is formed in the valve block 13 from top to bottom. The vent hole 131 is located in the middle of the guide groove 132 and is used to guide the gas below the valve block 13 to the top of the valve block 13 .

[0045] Furthermore, a first sleeve 111 for accommodating the closed shaft 133 is provided on the outer side of the rotating tube 11, and the inner wall of the first sleeve 111 is provided with a thread;

[0046] The outside of the closed shaft 133 and the inside of the first sleeve 111 are threadedly connected to the first sleeve 111 through a threaded area 1331 provided therein.

[0047] As an improvement, Figures 2-3 As shown, the fastening assembly 2 includes:

[0048] A third sleeve 22 is threadedly connected to the outside of the externally threaded tube 12, and the inner wall of the third sleeve 22 is provided with a thread adapted to the externally threaded tube 12;

[0049] The second sleeve 21 is fixedly connected to the upper end of the third sleeve 22 , and the inner wall of the second sleeve 21 is provided with threads.

[0050] Furthermore, a screw 1011 is fixedly connected to the lower end of the pressure detection gauge 101 , and the screw 1011 is threadedly connected to the second sleeve 21 .

[0051] It should be added that the sensor for detecting the gas pressure in the pressure detection gauge 101 passes through the screw 1011 to the inside of the rotating tube 11 and is located above the valve block 13. The sensor is not drawn in the figure.

[0052] It should be noted that: Figures 2-4As shown, in the specific implementation process, when the gas pressure in the gas pipeline 100 needs to be detected by the pressure detection table 101, the knob 134 is rotated, the knob 134 drives the sealing shaft 133 to rotate, the sealing shaft 133 is moved outward along the guide groove 132 under the action of the tangential force of the thread between the first sleeve 111 and the thread area 1331, so that the air hole 131 is switched from the original closed state to the open state, at this time, the gas in the gas pipeline 100 fills into the rotating pipe 11 inside and above the valve block 13, so that the gas pressure detected by the pressure detection table 101 is consistent with the gas pressure in the gas pipeline 100, the reading of the pressure detection table 101 at this time is recorded, and after the detection work is completed, the knob 134 is reversely rotated, so that the air hole 131 is closed by the sealing shaft 133, so that when the gas pressure in the gas pipeline 100 is detected each time, only the needle valve assembly 1 needs to be controlled, without stopping the gas of the pressure regulating equipment, and the detection efficiency is high;

[0053] As shown in the figure, Figures 2-3 In addition, when the pressure detection table 101 needs to be replaced, the air hole 131 is closed by the sealing shaft 133, the screw rod 1011 is rotated, and the screw rod 1011 is rotated out of the second sleeve 21, so that the gas leakage risk during replacement of the pressure detection table 101 is reduced;

[0054] As shown in the figure, Figure 3 As shown in the figure, even if the threaded connection port in the second sleeve 21 is cracked and damaged due to multiple replacements of the gas pressure table, the second sleeve 21 is only rotated, the third sleeve 22 is rotated out of the outer side of the outer threaded pipe 12 by the second sleeve 21, and then a new set of second sleeve 21 and third sleeve 22 accessories are replaced, so that maintenance is facilitated and use cost is saved.

[0055] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0056] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A gas pressure gauge needle valve comprising a pressure detecting gauge (101) provided above a gas pipe (100), characterized in that, Also include: Needle valve assembly (1) is arranged between the gas pipeline (100) and the pressure detection table (101), for controlling the gas pressure state between the gas pipeline (100) and the pressure detection table (101); Fastening assembly (2) is arranged on the upper end of the needle valve assembly (1), for fastening the pressure detection table (101).

2. The gas pressure gauge needle valve according to claim 1, wherein: The needle valve assembly (1) comprises: The rotating pipe (11) is fixedly inserted into the upper end opening of the gas pipeline (100); The outer threaded pipe (12) is arranged on the outer side of the upper end of the rotating pipe (11), for connecting the fastening assembly (2); The valve block (13) is fixedly inserted into the rotating pipe (11), for blocking the gas in the rotating pipe (11); The closure shaft (133) is inserted into the valve block (13), for controlling the opening and closing state of the valve block (13); The knob (134) is fixedly connected to one end of the closure shaft (133) opposite the valve block (13), for rotating and adjusting the closure shaft (133).

3. The gas pressure gauge needle valve according to claim 2, wherein: The valve block (13) is provided with a guide groove (132) in the middle for accommodating the closure shaft (133), and the diameter of the guide groove (132) is matched with the inner diameter of the closure shaft (133); The valve block (13) is provided with a vent hole (131) from top to bottom, and the vent hole (131) is located in the middle of the guide groove (132), for guiding the gas below the valve block (13) to the upper side of the valve block (13).

4. The gas pressure gauge needle valve according to claim 2, wherein: The rotating pipe (11) is provided with a first sleeve (111) on the outer side for accommodating the closure shaft (133), and the inner wall of the first sleeve (111) is provided with threads; The outer side of the closure shaft (133) and the first sleeve (111) are connected by the threads (1331) provided in the first sleeve (111).

5. The gas pressure gauge needle valve according to claim 2, wherein: The fastening assembly (2) comprises: The third sleeve (22) is threadedly connected to the outer side of the outer threaded pipe (12), and the inner wall of the third sleeve (22) is provided with threads matched with the outer threaded pipe (12); The second sleeve (21) is fixedly connected to the upper end of the third sleeve (22), and the inner wall of the second sleeve (21) is provided with threads.

6. The gas pressure gauge needle valve according to claim 5, wherein: The pressure detection table (101) is fixedly connected with a screw rod (1011) at the lower end, and the screw rod (1011) is threadedly connected with the second sleeve (21).

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