Industrial pressure measuring instrument

Abstract

The utility model provides an industrial pressure measuring instrument, which belongs to the technical field of sensors and comprises a threaded connecting pipe at the bottom of a pressure transmitter, an inner threaded cylinder arranged at the water inlet end of the threaded connecting pipe, a valve arranged at the water inlet end of the inner threaded cylinder, a bent pipe arranged at the water inlet end of the valve, and a first flange arranged at the water inlet end of the bent pipe. According to the utility model, the peak pressure of liquid is weakened through the first buffer sheet and the second buffer sheet in the buffer assembly, and the normal circulation of the liquid is ensured through the first water passing port and the second water passing port; therefore, the damage to the isolation diaphragm caused by the initial impact force of the liquid is relieved, and the service life of the isolation diaphragm is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to an industrial pressure measuring instrument. Background Art

[0002] Pressure transmitters are a type of pressure measuring instrument. They convert pressure into pneumatic or electrical signals for control and remote transmission. They are widely used in various industrial automation environments, including water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil wells, electric power, shipbuilding, machine tools, pipelines, and other industries.

[0003] For example, pressure transmitters used in industrial pipelines are mostly made by opening a threaded hole in the pipeline, and then connecting it to the corresponding threaded connection pipe through the pressure transmitter itself. The liquid will enter the threaded connection pipe and contact the isolation diaphragm, and then be transferred to the silicon chip through the isolation diaphragm, thereby changing the resistance value of the transmitter chip and detecting the pressure value.

[0004] However, when the peak pressure of the liquid is too high, this connection method will damage the isolation diaphragm, making the components less durable and requiring frequent replacement of the isolation diaphragm. To solve the above problem, an industrial pressure measuring instrument is proposed to solve the above problem. Utility Model Content

[0005] In view of this, the present invention provides an industrial pressure measuring instrument. The present invention weakens the peak pressure of the liquid through the first buffer plate and the second buffer plate in the buffer assembly, ensures the normal circulation of the liquid through the first water port and the second water port, thereby alleviating the damage caused to the isolation diaphragm by the initial impact force of the liquid, and thereby improving the service life of the isolation diaphragm.

[0006] In order to solve the above technical problems, the utility model provides an industrial pressure measuring instrument, including a threaded connecting pipe at the bottom of a pressure transmitter, the water inlet end of the threaded connecting pipe is provided with an internal threaded barrel, the water inlet end of the internal threaded barrel is provided with a valve, the water inlet end of the valve is provided with a bend, the water inlet end of the bend is provided with a first flange, the water inlet end of the first flange is provided with a buffer assembly, and the water inlet end of the buffer assembly is provided with a second flange.

[0007] The buffer assembly includes a connecting pipe connected to the first flange, and the connecting pipe is used to connect the elbow and the measured pipe so that the liquid in the measured pipe can flow into the elbow. A plurality of first buffer plates are provided on the front part of the inner wall of the connecting pipe, and the first buffer plates are used to divert the liquid when it enters the connecting pipe, thereby reducing its peak pressure. A plurality of second buffer plates are provided on the rear part of the inner wall of the connecting pipe, and the second buffer plates are used to reduce the peak pressure of the liquid entering the connecting pipe for a second time.

[0008] The first buffer sheet and the second buffer sheet are coaxially arranged at intervals, which can disperse the impact force received, thereby reducing the pressure received by the isolation diaphragm. The second buffer sheet is also used to fill the gap between the first buffer sheets.

[0009] Each first buffer plate surface is provided with a plurality of first water openings, which are used to connect the liquid diversion at the front end of the pipeline to reduce the impact force of the liquid. Each second buffer plate surface is provided with a plurality of second water openings, which are used to connect the liquid diversion at the end of the pipeline to reduce the impact force of the liquid for a second time.

[0010] Each first buffer piece is provided with a first clamping piece on one side close to the inner wall of the communicating pipe, and the first clamping piece is detachably connected to the first buffer piece. The first clamping piece is used to connect the first buffer piece to the inner wall of the communicating pipe. The first clamping piece is used to, each second buffer piece is provided with a second clamping piece on one side close to the inner wall of the communicating pipe, and the second clamping piece is used to connect the second buffer piece to the inner wall of the communicating pipe. The second clamping piece is detachably connected to the second buffer piece.

[0011] The outer wall of the internal threaded barrel is provided with a positioning ring for connecting the internal threaded barrel with the positioning plate. A positioning plate is provided at both ends of the positioning ring. The positioning plate is used to connect the positioning ring with the support rod.

[0012] A support rod is provided on the lower surface of each positioning plate. The support rod is used to connect the positioning plate and the foot cup. The support rod is also used to support the entire pressure transmitter. A foot cup is provided at the lower end of the support rod. The foot cup is used to increase the contact area of ​​the support rod and is also used to adjust the height of the support rod.

[0013] In summary, compared with the prior art, this application has at least one of the following beneficial technical effects:

[0014] 1. The peak pressure of the liquid is weakened by the first buffer sheet in the connecting pipe, and the peak pressure of the liquid is weakened for a second time by the second buffer sheet. The normal circulation of the liquid is ensured through the first water outlet and the second water outlet, thereby preventing the first buffer sheet and the second buffer sheet from blocking the connecting pipe. The first buffer sheet and the second buffer sheet are arranged in a spaced combination to improve the overall buffering effect. The liquid eventually enters the internal threaded barrel through the elbow and the valve, and finally enters the threaded connecting pipe and contacts the isolation diaphragm, thereby alleviating the damage caused by the initial impact force of the liquid to the isolation diaphragm.

[0015] 2. The first water outlet is used to reduce the peak impact force of the liquid at the front end of the connecting pipe, and the second water outlet is used to reduce the impact force of the liquid at the end of the connecting pipe.

[0016] 3. After the threaded connecting rod is connected to the internal threaded barrel, the connection between the locating ring and the locating plate enables the locating plate and the support rod to serve as auxiliary support for the installed pressure transmitter, preventing the vibration of the pipeline during operation from affecting the pressure transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a side structural diagram of the present utility model;

[0019] Figure 3 For this utility model Figure 2 A partial enlarged view of;

[0020] Figure 4 It is a side sectional view of the utility model;

[0021] Figure 5 It is a front cross-sectional view of the utility model;

[0022] Figure 6 It is a partially enlarged rear view of the present invention.

[0023] Explanation of the accompanying drawings: 100, pressure transmitter; 101, threaded connecting pipe; 102, internal threaded cylinder; 103, valve; 104, elbow; 105, first flange; 106, second flange; 200, buffer assembly; 201, connecting pipe; 202, first buffer plate; 203, second buffer plate; 204, first water outlet; 205, second water outlet; 206, first clamping member; 207, second clamping member; 300, positioning ring; 301, positioning plate; 302, support rod; 303, foot cup. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiment of the present invention clearer, the following will be combined with the appended drawings of the embodiment of the present invention. Figure 1-6 The technical solutions of the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0025] like Figure 1-6As shown: This embodiment provides an industrial pressure measuring instrument, including a threaded connecting tube 101 at the bottom of a pressure transmitter 100, the threaded connecting tube 101 has a built-in isolation diaphragm, the water inlet end of the threaded connecting tube 101 is provided with an internal threaded barrel 102, the internal threaded barrel 102 is threadedly matched with the threaded connecting tube 101, thereby making the internal threaded barrel 102 and the threaded connecting tube 101 detachably connected, and the water inlet end of the internal threaded barrel 102 is provided with a valve 103, the valve 103 can be a manual valve 103 or an electric valve 103, the valve 103 is used to cut off the connection at the bottom of the elbow 104 when replacing or repairing the pressure transmitter 100, thereby realizing the replacement of the pressure transmitter 100 without water interruption, and the opening and closing opening of the control valve 103 can also be weakened The impact force of pressure, the water outlet end of valve 103 and the water inlet end of internal threaded tube 102 can be connected by flange sealing, the water inlet end of valve 103 and the water outlet end of elbow 104 can be connected by flange sealing, the water inlet end of valve 103 is provided with elbow 104, elbow 104 is used for connecting buffer component 200 with valve 103, elbow 104 itself can also reduce the impact force of liquid, elbow 104 can also be replaced with surface elbow, the water inlet end of elbow 104 is provided with a first flange 105, the first flange 105 is used for connecting elbow 104 with buffer component 200, the water inlet end of first flange 105 is provided with buffer component 200, the water inlet end of buffer component 200 is provided with second flange 106, the second flange 106 is connected with buffer component 200.

[0026] When in use, it is connected to the pipeline to be tested through the second flange 106, the peak pressure of the liquid is weakened by the first buffer plate 202 in the connecting pipeline 201, and the peak pressure of the liquid is weakened for a second time by the second buffer plate 203. The normal circulation of the liquid is ensured through the first water port 204 and the second water port 205, thereby preventing the first buffer plate 202 and the second buffer plate 203 from blocking the connecting pipeline 201. The overall buffering effect is improved by the spaced combination arrangement of the first buffer plate 202 and the second buffer plate 203. The liquid finally enters the internal threaded barrel 102 through the bend 104 and the valve 103, and finally enters the threaded connecting pipe 101 and contacts the isolation diaphragm, thereby alleviating the damage caused to the isolation diaphragm by the initial impact force of the liquid.

[0027] This embodiment provides an industrial pressure measuring instrument,

[0028] like Figure 1 、 2, 3, and 6: The buffer assembly 200 includes a connecting pipe 201 connected to the first flange 105, and connecting flanges are provided at both ends of the connecting pipe 201. The flange at the outlet end of the connecting pipe 201 is connected and fixed to the first flange 105 with bolts and gaskets for sealing. The flange at the water inlet end of the connecting pipe 201 is connected and fixed to the second flange 106 with bolts and gaskets for sealing. The connecting pipe 201 is used for communication between the elbow 104 and the measured pipe, so that the liquid in the measured pipe can flow into the elbow 104. A plurality of first buffer sheets 202 are provided on the front part of the inner wall of the connecting pipe 201, and the first buffer sheets 202 are provided on the front part of the inner wall of the connecting pipe 201. A buffer sheet 202 is used to divert the liquid entering the connecting pipe 201 and reduce its peak pressure. A plurality of second buffer sheets 203 are provided on the rear part of the inner wall of the connecting pipe 201. The second buffer sheets 203 are used to reduce the peak pressure of the liquid entering the connecting pipe 201 for the second time. The first buffer sheet 202 and the second buffer sheet 203 are coaxially arranged at intervals, which can disperse the impact force received, thereby reducing the pressure on the isolation diaphragm. The second buffer sheet 203 is also used to fill the gap between the first buffer sheets 202. The first buffer sheet 202 and the second buffer sheet 203 are both fan-shaped.

[0029] The effect is as follows: the first buffer sheet 202 is used to divert the liquid entering the connecting pipe 201 and reduce its peak pressure; the second buffer sheet 203 is used to reduce the peak pressure of the liquid entering the connecting pipe 201 for a second time, thereby reducing the pressure of the liquid entering the pressure transmitter 100, thereby increasing the service life of the isolation diaphragm in the pressure transmitter 100.

[0030] like Figure 2 、 3 As shown in , 5 and 6: a plurality of first water openings 204 are provided on the surface of each first buffer sheet 202, and the first water openings 204 penetrate the first buffer sheet 202. The first water openings 204 are used to connect the liquid diversion at the front end of the pipe 201 to reduce the impact force of the liquid. A plurality of second water openings 205 are provided on the surface of each second buffer sheet 203, and the second water openings 205 penetrate the second buffer sheet 203. The second water openings 205 are used to connect the liquid diversion at the end of the pipe 201 to reduce the impact force of the liquid for a second time. Both the first buffer sheet 202 and the second buffer sheet 203 can be made of corrosion-resistant materials such as stainless steel.

[0031] The effect is that the first water opening 204 is used to reduce the peak impact force of the liquid at the front end of the communicating pipe 201 , and the second water opening 205 is used to reduce the impact force of the liquid at the end of the communicating pipe 201 .

[0032] like Figure 2 、 3As shown in Figures 5 and 6: Each first buffer sheet 202 is provided with a first clamping member 206 on one side close to the inner wall of the connecting pipe 201, and the first clamping member 206 is welded and fixed to the inner wall of the connecting pipe 201 on one side, and the first clamping member 206 is fixed to the first buffer sheet 202 with bolts on the other side. The first clamping member 206 is detachably connected to the first buffer sheet 202, and the first clamping member 206 is used to connect the first buffer sheet 202 to the inner wall of the connecting pipe 201. The first clamping member 206 is used to, each second buffer sheet 203 is provided with a second clamping member 207 on one side close to the inner wall of the connecting pipe 201, and the second clamping member 207 is welded and fixed to the inner wall of the connecting pipe 201 on one side, and the second clamping member 207 is fixed to the second buffer sheet 203 with bolts on the other side. The second clamping member 207 is used to connect the second buffer sheet 203 to the inner wall of the connecting pipe 201, and the second clamping member 207 is detachably connected to the second buffer sheet 203.

[0033] The effect is that the connection between the first clamping member 206 and the first buffer sheet 202 facilitates the disassembly of the first buffer sheet 202 , and the connection between the second clamping member 207 and the second buffer sheet 203 facilitates the disassembly of the second buffer sheet 203 .

[0034] like Figure 1 、 2 , 4, 5: The outer wall of the internal threaded barrel 102 is provided with a positioning ring 300 for connecting the internal threaded barrel 102 with the positioning plate 301. The outer wall of the internal threaded barrel 102 is welded to the positioning ring 300. A positioning plate 301 is provided at both ends of the positioning ring 300. The positioning plate 301 is welded and fixed to the positioning ring 300. The positioning plate 301 is used to connect the positioning ring 300 with the support rod 302. The lower surface of each positioning plate 301 is provided with a support rod 302. The support rod 302 and the positioning plate 301 can be fixed by using washers and bolts. The support rod 302 is used to connect the positioning plate 301 and the foot cup 303. The support rod 302 is also used to support the entire pressure transmitter 100. A foot cup 303 is provided at the lower end of the support rod 302. The support rod 302 and the foot cup 303 can be welded and fixed. The foot cup 303 can adopt a lifting type structure. The foot cup 303 is used to increase the contact area of ​​the support rod 302 and is also used to adjust the height of the support rod 302.

[0035] The effect is that the positioning plate 301 and the support rod 302 are used to provide auxiliary support for the installed pressure transmitter 100, thereby preventing the vibration of the pipeline during operation from affecting the pressure transmitter 100.

[0036] Working principle: It is connected to the pipe to be tested through the second flange 106, and the peak pressure of the liquid is weakened by the first buffer plate 202 in the connecting pipe 201, and the peak pressure of the liquid is weakened for a second time by the second buffer plate 203. The normal circulation of the liquid is ensured by the first water port 204 and the second water port 205, thereby preventing the first buffer plate 202 and the second buffer plate 203 from blocking the connecting pipe 201. The first buffer plate 202 and the second buffer plate 203 are arranged in a spaced combination to improve the overall buffering effect. The liquid finally enters the internal threaded barrel 102 through the elbow 104 and the valve 103, and finally enters the threaded connecting pipe 101 and contacts the isolation diaphragm, thereby alleviating the damage caused by the initial impact force of the liquid to the isolation diaphragm. When the threaded connecting rod is connected to the internal threaded barrel 102, the connection between the positioning ring 300 and the positioning plate 301 enables the positioning plate 301 and the support rod 302 to serve as auxiliary support for the installed pressure transmitter 100, thereby preventing the vibration of the pipeline during operation from affecting the pressure transmitter 100.

[0037] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An industrial pressure measuring instrument, comprising a threaded connecting pipe (101) at the bottom of a pressure transmitter (100), characterized in that: The water inlet end of the threaded connecting pipe (101) is provided with an internal threaded barrel (102), the water inlet end of the internal threaded barrel (102) is provided with a valve (103), the water inlet end of the valve (103) is provided with a bend pipe (104), the water inlet end of the bend pipe (104) is provided with a first flange (105), the water inlet end of the first flange (105) is provided with a buffer assembly (200), and the water inlet end of the buffer assembly (200) is provided with a second flange (106).

2. An industrial pressure measuring instrument according to claim 1, characterized in that: The buffer assembly (200) comprises a communicating pipe (201) connected to the first flange (105), a plurality of first buffer sheets (202) being provided at the front portion of the inner wall of the communicating pipe (201), and a plurality of second buffer sheets (203) being provided at the rear portion of the inner wall of the communicating pipe (201).

3. An industrial pressure measuring instrument according to claim 2, characterized in that: The first buffer sheet (202) and the second buffer sheet (203) are coaxially arranged and spaced apart.

4. An industrial pressure measuring instrument according to claim 3, characterized in that: A plurality of first water openings (204) are provided on the surface of each first buffer sheet (202), and a plurality of second water openings (205) are provided on the surface of each second buffer sheet (203).

5. An industrial pressure measuring instrument according to claim 4, characterized in that: Each first buffer sheet (202) is provided with a first clamping member (206) on one side close to the inner wall of the communicating pipe (201), and the first clamping member (206) is detachably connected to the first buffer sheet (202); each second buffer sheet (203) is provided with a second clamping member (207) on one side close to the inner wall of the communicating pipe (201), and the second clamping member (207) is detachably connected to the second buffer sheet (203).

6. An industrial pressure measuring instrument according to claim 5, characterized in that: A positioning ring (300) is provided on the outer wall of the internally threaded cylinder (102), and a positioning plate (301) is provided at both left and right ends of the positioning ring (300).

7. An industrial pressure measuring instrument according to claim 6, characterized in that: A support rod (302) is provided on the lower surface of each positioning plate (301), and a foot cup (303) is provided at the lower end of the support rod (302).

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