Rapid and accurate pressure and temperature sensor with special thread insertion

Abstract

The utility model relates to the technical field of sensors, in particular to a special thread insertion rapid and accurate pressure and temperature sensor which comprises a meter head, a screw tube with threads on the surface is arranged on the meter head, an induction tube is coaxially arranged on the screw tube, an induction module is arranged in the induction tube, and the induction module is used for measuring the temperature and the pressure intensity of a liquid medium in a pipeline. A sealing connecting pipe is in threaded connection with the screw pipe, the sealing connecting pipe is communicated with the pipeline, and a blocking piece is arranged on the sealing connecting pipe and used for blocking the sealing connecting pipe. The device has the advantages of being accurate in measurement, high in measurement speed and convenient to replace, and liquid medium circulation in the pipeline does not need to be blocked.

Description

Technical Field

[0001] This application relates to the technical field of sensors, and in particular to a special threaded insertion rapid and precise pressure and temperature sensor. Background Art

[0002] A temperature and pressure sensor is a sensor that integrates pressure measurement and temperature measurement. It can measure the signals of temperature and pressure simultaneously and convert these signals into electrical signals or other required forms of signals for output according to certain rules.

[0003] Chinese Patent No. CN212363278U discloses a temperature and pressure sensor assembly, which includes a circuit module, a pressure sensing element, and a temperature sensing element. The temperature sensing element includes a conductive part and a head connected to the conductive part and used to sense the temperature of the fluid. The head is exposed to the environment to contact the medium.

[0004] Since the thermistor is directly exposed to the medium, although there is a technology of plastic coating for the thermistor and pins, the plastic coating material is usually made of plastic and other materials. When the plastic coating material is exposed to the liquid medium in the pipeline for a long time, it is prone to damage. Replacing the temperature and pressure sensor requires blocking the flow of the liquid medium in the pipeline, which will affect the normal flow of the liquid medium in the pipeline and has deficiencies. Utility Model Content

[0005] In order to improve the problem that replacing the temperature and pressure sensor requires blocking the flow of the liquid medium in the pipeline, this application provides a special threaded insertion rapid and precise pressure and temperature sensor.

[0006] The special threaded insertion rapid and precise pressure and temperature sensor provided by this application adopts the following technical solutions:

[0007] A special threaded insertion rapid and precise pressure and temperature sensor includes a meter head. A screw tube with threads on its surface is arranged on the meter head. An induction tube is coaxially arranged on the screw tube. An induction module is arranged in the induction tube and is used to measure the temperature and pressure of the liquid medium in the pipeline. A sealing connection pipe is threadedly connected to the screw tube. The sealing connection pipe is communicated with the pipeline. A blocking member is arranged on the sealing connection pipe and is used to block the sealing connection pipe.

[0008] By adopting the above technical solution, when the pressure and temperature sensor fails, the worker blocks the sealed connection pipe through the blocking member, and then reversely rotates the screw pipe on the meter head to separate the screw pipe from the sealed connection pipe. At this time, the liquid medium in the pipeline flows smoothly and will not flow out of the sealed connection pipe under the action of the blocking member. Then, the worker screws the screw pipe on another pressure and temperature sensor into the sealed connection pipe in the forward direction, and finally releases the blocking effect of the blocking member. In this way, replacing the pressure and temperature sensor does not require blocking the flow of the liquid medium in the pipeline.

[0009] Optionally, the induction module includes a pressure induction unit and a temperature induction unit. The temperature induction unit is located between the pressure induction unit and the screw pipe. Both the pressure induction unit and the temperature induction unit are electrically connected to the meter head. A seal is provided between the pressure induction unit and the induction pipe.

[0010] By adopting the above technical solution, the seal and the pressure induction unit isolate the temperature induction unit from the liquid medium. The induction pipe can be made of metal copper. The temperature induction unit indirectly measures the temperature of the liquid medium through the induction pipe by means of heat transfer, thereby reducing the possibility of damage to the temperature induction unit. At the same time, the worker can rotate the screw pipe to make the induction pipe extend to different depths in the pipeline to adapt to different pipeline diameters.

[0011] Optionally, the blocking member includes a welded pipe connected to the pipeline. A ball valve is connected to the welded pipe. One end of the ball valve facing away from the welded pipe is connected to the sealed connection pipe.

[0012] By adopting the above technical solution, when the screw pipe drives the induction pipe away from the valve core of the ball valve, the worker rotates the ball valve, and the ball valve blocks the sealed connection pipe, thereby blocking the possibility of the liquid medium in the pipeline flowing into the sealed connection pipe, and at the same time not affecting the flow of the liquid medium in the pipeline, thus facilitating the worker to replace the pressure and temperature sensor.

[0013] Optionally, a pipe joint is provided at one end of the ball valve facing away from the welded pipe. The sealed connection pipe is threadedly connected to the pipe joint. A sealing ring is provided between the pipe joint and the sealed connection pipe.

[0014] By adopting the above technical solution, when the thread on the sealed connection pipe is damaged, it is convenient for the worker to replace the sealed connection pipe. At the same time, the sealing ring ensures the sealing performance between the pipe joint and the sealed connection pipe.

[0015] Optionally, the seal includes a pressing ring block threadedly connected to the induction pipe. The pressing ring block is used to press the pressure induction unit. A sealing ring is provided between the pressure induction unit and the inner side wall of the induction pipe.

[0016] By adopting the above technical solution, the possibility of direct contact between the liquid medium in the pipeline and the temperature sensing unit is reduced, and at the same time the pressure sensing unit can directly contact the liquid medium in the pipeline, which is conducive to improving the accuracy of pressure measurement in the pipeline.

[0017] Optionally, a conductive ring sleeve is coaxially arranged in the induction tube, the conductive ring sleeve contacts the inner wall of the induction tube, and a receiving groove for accommodating the temperature sensing unit is opened on the circumferential outer wall of the conductive ring sleeve, and the temperature sensing unit contacts the inner wall of the induction tube.

[0018] By adopting the above technical solution, the temperature sensing unit is directly in contact with the inner wall of the sensing tube. At the same time, the conductive ring sleeve can also be made of metal copper. By utilizing the fast thermal conductivity of metal copper, the response time of the temperature sensing unit to the temperature of the liquid medium in the pipeline is shortened, which is beneficial to improving the accuracy and timeliness of the temperature measurement of the liquid medium in the pipeline.

[0019] Optionally, the length of the sealing connecting pipe is longer than the length of the sensing tube.

[0020] By adopting the above technical solution, when the sensing tube is away from the valve core, the sealing tube and the spiral tube are still in a threaded connection state, which is convenient for workers to close the ball valve later and reduces the possibility of liquid medium in the pipeline flowing out from the inside of the sealing tube.

[0021] Optionally, the induction tube extends into the pipeline through the ball valve and the welded pipe.

[0022] The adoption of the above technical solution is conducive to improving the accuracy and timeliness of the temperature and pressure measurement results of the liquid medium in the pipeline.

[0023] Optionally, a locking nut is threadedly connected to the spiral tube, and the locking nut is used to tighten the sealing connecting pipe.

[0024] By adopting the above technical solution, the vibration caused by the flow of the fluid medium in the pipeline is reduced, making it possible for the spiral tube to rotate automatically.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When the pressure and temperature sensor is damaged and fails, the worker blocks the sealing pipe with the blocking piece, and then reversely twists the spiral tube on the meter head to separate the spiral tube from the sealing pipe. At this time, the liquid medium in the pipeline flows smoothly and will not flow out of the sealing pipe due to the blocking piece. Then the worker screws the spiral tube on another pressure and temperature sensor into the sealing pipe in the forward direction, and finally releases the blocking effect of the blocking piece. This method does not need to block the flow of the liquid medium in the pipeline when replacing the pressure and temperature sensor;

[0027] 2. A seal and a pressure sensing unit isolate the temperature sensing unit from the liquid medium. The sensing tube can be made of metal copper. The temperature sensing unit indirectly measures the temperature of the liquid medium through the sensing tube by means of heat transfer, thereby reducing the possibility of damage to the temperature sensing unit. At the same time, the worker can turn the screw tube to extend the sensing tube to different depths inside the pipeline, so as to adapt to different pipeline diameters.

[0028] 3. Make the temperature sensing unit directly contact the inner side wall of the sensing tube. At the same time, the conduction ring sleeve can also be made of metal copper. Utilizing the characteristic of fast heat conduction of metal copper is conducive to shortening the response time of the temperature sensing unit to the temperature of the liquid medium in the pipeline, and is conducive to improving the accuracy and timeliness of measuring the temperature of the liquid medium in the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of an embodiment of the present application.

[0030] Figure 2 is a cross-sectional view of the positional relationship among the welded pipe, the pipeline and the screw tube in the embodiment of the present application.

[0031] Figure 3 is Figure 2 an enlarged view of part A in

[0032] Description of the reference numerals: 0, pipeline; 1, meter head; 2, screw tube; 3, sensing tube; 4, sensing module; 41, pressure sensing unit; 42, temperature sensing unit; 43, seal; 431, pressing ring block; 432, sealing ring; 5, sealing connection pipe; 6, blocking member; 61, welded pipe; 62, ball valve; 7, pipe joint; 8, sealing ring; 9, conduction ring sleeve; 10, receiving groove; 11, locknut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following further Figures 1-3 describes the present application in detail with reference to the attached drawings.

[0034] The embodiment of the present application discloses a special threaded insertion type fast and accurate pressure and temperature sensor.

[0035] Referring to Figure 1 , a special threaded insertion type fast and accurate pressure and temperature sensor includes a meter head 1. A screw tube 2 with a threaded surface is bolted on the meter head 1. One end of the screw tube 2 facing away from the meter head 1 is coaxially welded with a sensing tube 3. The sensing tube 3 can be made of metal copper material.

[0036] Referring to Figure 1 , Figure 2 and Figure 3, an induction module 4 is arranged inside the induction pipe 3. The induction module 4 is used to measure the temperature and pressure of the liquid medium in the pipe 0. A sealing connection pipe 5 is threadedly connected to the solenoid pipe 2. The length of the sealing connection pipe 5 is longer than that of the induction pipe 3. The sealing connection pipe 5 communicates with the pipe 0. A locknut 11 is threadedly connected to the solenoid pipe 2. The locknut 11 is used to press against the sealing connection pipe 5.

[0037] Refer to Figure 1 , Figure 2 and Figure 3 , a blocking member 6 is arranged on the sealing connection pipe 5. The blocking member 6 is used to block the sealing connection pipe 5. The blocking member 6 includes a welded pipe 61 connected to the pipe 0. A ball valve 62 is threadedly connected to the welded pipe 61. One end of the ball valve 62 facing away from the welded pipe 61 is threadedly connected to a pipe joint 7. The pipe joint 7 is threadedly connected to the sealing connection pipe 5. A sealing ring 8 is arranged between the pipe joint 7 and the sealing connection pipe 5. The induction pipe 3 extends into the pipe 0 through the ball valve 62 and the welded pipe 61.

[0038] When a worker needs to remove the solenoid pipe 2, the worker rotates the solenoid pipe 2 in the reverse direction. Under the blocking effect of the sealing connection pipe 5, the solenoid pipe 2 drives the induction pipe 3 to gradually move away from the pipe 0. The induction pipe 3 moves from the welded pipe 61 towards the sealing connection pipe 5 and passes through the valve core of the ball valve 62 until the induction pipe 3 is away from the valve core. At this time, the worker rotates the ball valve 62, and the ball valve 62 blocks the channel between the sealing connection pipe 5 and the pipe 0.

[0039] Then the worker continues to rotate the solenoid pipe 2 until the solenoid pipe 2 is separated from the sealing connection pipe 5. Then the worker screws the solenoid pipe 2 on another meter head 1 into the sealing connection pipe 5 in the forward direction. Then the worker releases the blocking effect of the ball valve 62 and continues to rotate the solenoid pipe 2 in the forward direction. The solenoid pipe 2 drives the induction pipe 3 to gradually extend into the pipe 0. Then the worker tightens the locknut 11, and the locknut 11 presses against the sealing connection pipe 5.

[0040] Refer to Figure 1 , Figure 2 and Figure 3 , the induction module 4 includes a pressure induction unit 41 and a temperature induction unit 42. Both the pressure induction unit 41 and the temperature induction unit 42 are electrically connected to the meter head 1. A conduction ring sleeve 9 is coaxially arranged inside the induction pipe 3 between the pressure induction unit 41 and the solenoid pipe 2. The conduction ring sleeve 9 can be made of metal copper. The circumferential outer wall of the conduction ring sleeve 9 is in contact with the circumferential inner wall of the induction pipe 3. A receiving groove 10 for accommodating the temperature induction unit 42 is opened on the circumferential outer wall of the conduction ring sleeve 9.

[0041] Refer to Figure 1 , Figure 2 and Figure 3, the temperature sensing unit 42 is located in the receiving groove 10 and contacts the inner side wall of the sensing tube 3. A seal 43 is arranged between the pressure sensing unit 41 and the sensing tube 3. The seal 43 includes a compression ring block 431 threadedly connected to the sensing tube 3. The compression ring block 431 is used to compress the pressure sensing unit 41. A sealing ring 432 is arranged between the pressure sensing unit 41 and the inner side wall of the sensing tube 3.

[0042] After the sensing tube 3 extends into the pipeline 0, the temperature of the fluid medium in the pipeline 0 is transmitted to the conduction ring sleeve 9 through the sensing tube 3. The conduction ring sleeve 9 transmits the temperature coming from all around to the temperature sensing unit 42. At the same time, the fluid medium in the pipeline 0 transmits the pressure to the pressure sensing unit 41. The pressure sensing unit 41 and the temperature sensing unit 42 transmit the pressure and temperature information to the meter head 1 in the form of electrical signals through wires, so as to facilitate the workers to timely understand the pressure and temperature information of the fluid medium in the pipeline 0.

[0043] The implementation principle of a special threaded insertion quick and precise pressure and temperature sensor in the embodiment of the present application is as follows: When the worker needs to remove the screw tube 2, the worker rotates the screw tube 2 in the reverse direction. Under the blocking action of the sealing connection pipe 5, the screw tube 2 drives the sensing tube 3 to gradually move away from the pipeline 0. The sensing tube 3 moves from the welded pipe 61 towards the sealing connection pipe 5 and passes through the valve core of the ball valve 62 until the sensing tube 3 moves away from the valve core. At this time, the worker rotates the ball valve 62, and the ball valve 62 blocks the channel between the sealing connection pipe 5 and the pipeline 0.

[0044] Then the worker continues to rotate the screw tube 2 until the screw tube 2 is separated from the sealing connection pipe 5. Then the worker screws the screw tube 2 on another meter head 1 into the sealing connection pipe 5 in the forward direction. Then the worker releases the blocking action of the ball valve 62 and continues to rotate the screw tube 2 in the forward direction. The screw tube 2 drives the sensing tube 3 to gradually extend into the pipeline 0. Then the worker tightens the locknut 11, and the locknut 11 abuts against the sealing connection pipe 5.

[0045] After the sensing tube 3 extends into the pipeline 0, the temperature of the fluid medium in the pipeline 0 is transmitted to the conduction ring sleeve 9 through the sensing tube 3. The conduction ring sleeve 9 transmits the temperature coming from all around to the temperature sensing unit 42. At the same time, the fluid medium in the pipeline 0 transmits the pressure to the pressure sensing unit 41. The pressure sensing unit 41 and the temperature sensing unit 42 transmit the pressure and temperature information to the meter head 1 in the form of electrical signals through wires, so as to facilitate the workers to timely understand the pressure and temperature information of the fluid medium in the pipeline 0.

[0046] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A special threaded insertion fast and accurate pressure and temperature sensor, characterized in that: The meter head (1) comprises a spiral tube (2) with a threaded surface provided on the meter head (1), a sensing tube (3) coaxially provided on the spiral tube (2), a sensing module (4) provided inside the sensing tube (3), the sensing module (4) used to measure the temperature and pressure of a liquid medium in a pipeline (0), a sealing pipe (5) threadedly connected to the spiral tube (2), the sealing pipe (5) being connected to the pipeline (0), a blocking member (6) provided on the sealing pipe (5), the blocking member (6) used to block the sealing pipe (5).

2. A special threaded fast and accurate pressure and temperature sensor according to claim 1, characterized in that: The sensing module (4) comprises a pressure sensing unit (41) and a temperature sensing unit (42); the temperature sensing unit (42) is located between the pressure sensing unit (41) and the spiral tube (2); the pressure sensing unit (41) and the temperature sensing unit (42) are both electrically connected to the meter head (1); and a sealing member (43) is provided between the pressure sensing unit (41) and the sensing tube (3).

3. A special threaded fast and accurate pressure and temperature sensor according to claim 1, characterized in that: The blocking member (6) comprises a welding pipe (61) connected to the pipeline (0), the welding pipe (61) is connected to a ball valve (62), and one end of the ball valve (62) facing away from the welding pipe (61) is connected to the sealing connecting pipe (5).

4. A special threaded fast and accurate pressure and temperature sensor according to claim 3, characterized in that: A pipe joint (7) is provided at one end of the ball valve (62) facing away from the welded pipe (61); the sealing connecting pipe (5) is threadedly connected to the pipe joint (7); and a sealing ring (8) is provided between the pipe joint (7) and the sealing connecting pipe (5).

5. A special threaded fast and accurate pressure and temperature sensor according to claim 2, characterized in that: The sealing member (43) comprises a clamping ring block (431) threadedly connected to the sensing tube (3), the clamping ring block (431) being used to clamp the pressure sensing unit (41), and a sealing ring (432) is provided between the pressure sensing unit (41) and the inner side wall of the sensing tube (3).

6. A special threaded fast and accurate pressure and temperature sensor according to claim 2, characterized in that: A conductive ring sleeve (9) is coaxially arranged inside the induction tube (3), the conductive ring sleeve (9) contacts the inner wall of the induction tube (3), a receiving groove (10) for receiving the temperature sensing unit (42) is provided on the circumferential outer wall of the conductive ring sleeve (9), and the temperature sensing unit (42) contacts the inner wall of the induction tube (3).

7. A special threaded fast and accurate pressure and temperature sensor according to claim 4, characterized in that: The length of the sealing connecting pipe (5) is longer than the length of the sensing pipe (3).

8. The special threaded fast and accurate pressure and temperature sensor according to claim 4, characterized in that: The induction tube (3) extends into the pipeline (0) through the ball valve (62) and the welding pipe (61).

9. The special threaded fast and accurate pressure and temperature sensor according to claim 1, characterized in that: The spiral tube (2) is threadedly connected with a locking nut (11), and the locking nut (11) is used to tighten the sealing pipe (5).

Images