Anti-freezing pressure sensor

Abstract

The utility model provides an anti-freezing pressure sensor, which belongs to the technical field of pressure sensors and comprises a circuit assembly arranged at the top in an upper pipe barrel and a pressure sensor core body arranged at the lower part of the circuit assembly, a lower pipe barrel is arranged at the lower part of the upper pipe barrel, and the upper pipe barrel is communicated with the lower pipe barrel through threads. A protective sleeve is arranged on the outer surface of a barrel body of the upper pipe barrel, heat preservation cotton is filled in the protective sleeve, a heating sleeve is arranged on the outer surface of the middle of a barrel body of the lower pipe barrel, a pair of electric heating wires is arranged in the heating sleeve in the axial direction of the heating sleeve, and a plurality of communication blocks are arranged between the electric heating wires. The electric heating wire is electrified and heated, heat emitted by the electric heating wire is transmitted into the lower pipe barrel, the probability that water flowing through the lower pipe barrel is frozen is reduced, heated water makes contact with a pressure sensor core, the situation that the pressure sensor is damaged due to the fact that the interior of a pipeline is frozen is avoided, and the service life of the pressure sensor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure sensor technical field, concretely relates to an anti-freezing pressure sensor. BACKGROUND

[0002] Pressure sensor is the device or device that can feel pressure signal and can change pressure signal into usable output electric signal according to certain rule, pressure sensor is usually composed of pressure sensitive element and signal processing unit, and pressure sensor is used for real -time monitoring the pressure in pipeline in water supply and drainage etc.

[0003] In the related art, resident water and production water are transported by laying pipe network, and the water pressure is usually required for the water for living and production, and the laid pipe network is prone to leakage in long-term use, so it is necessary to use a pressure sensor to monitor the water pressure of the pipe network in real time to realize water requirement monitoring and pipe network fault monitoring.

[0004] At present, the pressure sensor for measuring the water pressure of the pipe network mostly uses an oil-filled isolation pressure sensor core to directly measure the water pressure, but in winter or some environments with generally low temperature, the pipe network is prone to freezing, and when the water pipe freezes, the sensor core will be directly extruded by solid ice, causing overload, thereby causing the sensor chip to be broken and damaged, affecting the pressure monitoring effect. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides an anti-freezing pressure sensor, the utility model discloses through the electrification of the communication block in the heating sleeve pipe, and then the electric heating wire is electrified and heated, so that the heat emitted by the electric heating wire is transmitted to the lower pipe cylinder, thereby reducing the probability of ice formation of the water flowing through the lower pipe cylinder, so that the heated water contacts the pressure sensor core, thereby avoiding the damage of the pressure sensor caused by the ice formation in the pipe, thereby prolonging the service life of the pressure sensor.

[0006] To solve the above technical problems, the utility model provides an anti-freezing pressure sensor, which comprises a circuit assembly arranged at the top of an upper pipe cylinder, a positioning ring arranged below the circuit assembly, a pressure sensor core arranged below the positioning ring, and a lower pipe cylinder arranged at the lower part of the upper pipe cylinder, wherein the upper pipe cylinder and the lower pipe cylinder are connected through threads, the outer surface of the upper pipe cylinder is provided with a protective sleeve, the protective sleeve is filled with thermal insulation cotton, the middle part of the outer surface of the lower pipe cylinder is provided with a heating sleeve, a pair of electric heating wires are arranged in the heating sleeve along the axial direction, a plurality of communication blocks are arranged between the electric heating wires, and one side of one of the communication blocks is provided with a wiring pipe.

[0007] The end of the wire tube away from the heating sleeve is provided with a waterproof cap for sealing the wire in the wire tube, and the end of the wire tube close to the heating sleeve is provided with a sealing joint for reinforcing and sealing the connection between the wire tube and the heating sleeve.

[0008] The upper and lower ends of the lower tube barrel are provided with an externally threaded pipe, the internally threaded pipe is arranged in the lower end of the lower tube barrel, and the internally threaded pipe is used for threaded connection with the externally threaded pipe, so that the lower tube barrel and the upper tube barrel are in threaded sealing communication.

[0009] The upper part of the lower tube barrel away from the externally threaded pipe is provided with a sealing ring, the sealing ring is used for connecting the lower tube barrel and the sealing ring, the upper part of the sealing ring is provided with a sealing ring, and the sealing ring is used for inserting into the sealing groove, so as to heat and reinforce the sealing of the connection between the internally threaded pipe and the externally threaded pipe.

[0010] The lower end of the upper tube barrel is externally provided with a sealing groove for accommodating the sealing ring, so that the sealing ring is connected with the upper tube barrel, and the sealing groove is in sealing cooperation with the sealing ring.

[0011] The inner wall of the middle part of the lower tube barrel is provided with a guide plate for opening a guide hole, the guide plate is provided with a plurality of guide holes, the guide plate is matched with the guide hole to guide the water flow in contact with the pressure sensor chip, so as to reduce the probability of icing, one side of the guide plate facing the water flow direction is provided with a positioning groove for installing a guide cone to connect the guide plate and the guide cone, the positioning groove is provided with a guide cone, and the guide cone is used for guiding the water flow in contact with the pressure sensor chip, so as to reduce the probability of icing in the lower tube barrel.

[0012] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0013] 1、By energizing the communication block in the heating sleeve, the electric heating wire is heated, the heat emitted by the electric heating wire is transmitted to the lower tube barrel, so as to reduce the probability of icing of the water flowing through the lower tube barrel, so that the heated water contacts the pressure sensor core, thereby avoiding the damage of the pressure sensor caused by the icing in the pipeline, thereby prolonging the service life of the pressure sensor.

[0014] 2、The protective sleeve body and the heat preservation cotton filled therein heat the water flowing in the upper tube barrel, and also heat the circuit assembly and the pressure sensor core, thereby improving the anti-freezing ability of the pressure sensor, and prolonging the service life of the pressure sensor in winter and cold regions.

[0015] 3. By energizing the connecting block inside the heating sleeve, the electric heating wire is energized and heated, and the heat emitted by the electric heating wire is transferred to the lower tube. The guide plate connected to the lower tube is also heated. The guide port and guide cone opened on the guide plate can make the water passing through the guide plate flow, thereby reducing the probability of it freezing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure assembly of this utility model;

[0017] Figure 2 This is a side sectional view of the present invention;

[0018] Figure 3 This utility model Figure 2 A magnified view of part A;

[0019] Figure 4 This is a front sectional view of the present invention;

[0020] Figure 5 This utility model Figure 4 A magnified view of part B;

[0021] Figure 6 This is a top sectional view of the present invention.

[0022] Explanation of reference numerals in the attached drawings: 100, upper tube; 101, circuit assembly; 102, positioning ring; 103, pressure sensor core; 104, external threaded tube; 105, internal thread; 200, lower tube; 201, protective sleeve; 202, insulation cotton; 203, heating sleeve; 204, electric heating wire; 205, connecting block; 206, wiring conduit; 207, waterproof cap; 208, sealing joint; 300, sealing ring; 301, sealing ring; 302, sealing groove; 400, guide plate; 401, guide port; 402, positioning groove; 403, guide cone. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figures 1-6 The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0024] like Figures 1-6As shown: the embodiment provides an anti-icing pressure sensor, including the circuit assembly 101 arranged at the top of the upper barrel 100, the circuit assembly 101 includes the sensor, signal converter, signal processor and other components for transmitting the detection value of the pressure sensor core 103, the positioning ring 102 arranged at the lower part of the circuit assembly 101, the positioning ring 102 is used for fixing the circuit assembly 101 to prevent loosening, the pressure sensor core 103 arranged at the lower part of the positioning ring 102, the pressure sensor core 103 is used for directly sensing the measured pressure and converting it into an electrical signal, the circuit assembly 101 is electrically connected with the pressure sensor core 103 through the positioning ring 102, the lower part of the upper barrel 100 is provided with the lower barrel 200, the lower barrel 200 is used for installing the heating sleeve, the upper barrel 100 is communicated with the lower barrel 200 through threads, the outer surface of the barrel body of the upper barrel 100 is provided with the protective sleeve 201, the protective sleeve 201 is used for reducing the freezing of the internal components of the pressure sensor by the cold air outside the pressure sensor, the protective sleeve 201 is filled with the thermal insulation cotton 202, the thermal insulation cotton 202 is used for improving the thermal insulation performance of the protective sleeve 201, the protective sleeve 201 is made of thermal insulation material, thereby improving the thermal insulation effect of the upper barrel 100 on the circuit assembly 101 and the pressure sensor core 103, thereby improving the service life, the outer surface of the barrel body of the lower barrel 200 is provided with the heating sleeve 203, the heating sleeve 203 is made of material with good thermal conductivity, the lower barrel 200 is communicated with the heating sleeve through welding, a pair of electric heating wires 204 is arranged in the heating sleeve 203 along the axial direction, the electric heating wires 204 are welded and fixed with the inner wall of the lower barrel 200, a plurality of communication blocks 205 are arranged between the electric heating wires 204, the upper and lower ends of the communication blocks 205 are welded and connected through the communication blocks 205, and one of the communication blocks 205 is provided with the wiring pipe 206 on the side surface.

[0025] In use, the communication blocks 205 in the heating sleeve are powered, and the electric heating wires 204 are powered and heated, so that the heat emitted by the electric heating wires 204 is transmitted to the lower barrel 200, thereby reducing the probability of ice formation in the lower barrel 200, so that the heated water contacts the pressure sensor core 103, thereby avoiding the damage of the pressure sensor caused by the ice in the pipeline, thereby improving the service life of the pressure sensor.

[0026] The embodiment provides an anti-icing pressure sensor,

[0027] As Figure 1 , 2, 4, 5: the wire tube 206 away from the heating sleeve 203 one end is provided with a waterproof cap 207, waterproof cap 207 and wire tube 206 through the thread seal connection, waterproof cap 207 is equipped with waterproof ring, waterproof cap 207 for access to the wire in the wire tube 206 sealing, wire tube 206 close to the heating sleeve 203 one end is provided with a sealing joint 208, sealing joint 208 one end and heating sleeve embedded connection, sealing joint 208 the other end and wire tube 206 through the thread connection, sealing joint 208 for wire tube 206 and heating sleeve connection place reinforcement sealing, sealing joint 208 and heating sleeve 203 internal communication.

[0028] The effect is: sealing joint 208 for wire tube 206 and heating sleeve connection place reinforcement sealing, waterproof cap 207 for access to the wire in the wire tube 206 sealing, so as to access the heating wire and the wire on the wire sealing.

[0029] As Figure 1 , 2 , 3, 4: the lower tube barrel 200 of both ends is provided with an outer thread pipe 104, outer thread pipe 104 and lower tube barrel 200 welding connection, outer thread pipe 104 for and inner thread 105 thread cooperation, lower tube barrel 200 of the lower end is provided with an inner thread 105, inner thread 105 and upper tube barrel 100 embedded connection.

[0030] The effect is: inner thread 105 for and outer thread pipe 104 thread connection, so as to make the lower tube barrel 200 and upper tube barrel 100 through the thread seal communication.

[0031] As Figure 1 , 2 , 3, 4: the lower tube barrel 200 of the upper part is provided with a sealing ring 300 away from the outer thread pipe 104, sealing ring 300 and lower tube barrel 200 welding connection, sealing ring 300 is located in the lower tube barrel 200 of the outer thread pipe 104 bottom of the upper part, sealing ring 300 for the lower tube barrel 200 and sealing ring 301 connected, sealing ring 300 upper part is provided with a sealing ring 301, sealing ring 301 and sealing ring 300 can be hot melt connection or using glue bonding connection, sealing ring 301 for inserting into the sealing groove 302, so as to the connection between the inner thread 105 and outer thread pipe 104 heat preservation, and reinforcement sealing, upper tube barrel 100 of the lower end is provided with a sealing groove 302 outside, sealing groove 302 and upper tube barrel 100 outer wall welding connection, sealing groove 302 for receiving sealing ring 301, so that the sealing ring 301 and upper tube barrel 100 interface, sealing groove 302 and sealing ring 301 sealing cooperation.

[0032] The effect is that the sealing groove 302 is used for receiving the sealing ring 301, so that the sealing ring 301 is connected with the upper pipe cylinder 100, the sealing groove 302 is sealingly matched with the sealing ring 301, thereby heat preservation is performed on the connection between the inner thread 105 and the outer thread pipe 104, and sealing is reinforced.

[0033] As shown in Figure 2 , 4 , 6: the inner wall of the middle part of the lower pipe cylinder 200 is provided with a flow guide plate 400, the flow guide plate 400 is welded and connected with the inner wall of the lower pipe cylinder 200, and the flow guide plate 400 is provided with a plurality of flow guide openings 401, the flow guide openings 401 penetrate the flow guide plate 400, one side of the flow guide plate 400 facing the water flow direction is provided with a positioning groove 402, the positioning groove 402 is fixedly connected with the flow guide plate 400 by using a bolt, the positioning groove 402 is used for mounting a flow guide cone 403 to connect the flow guide plate 400 with the flow guide cone 403, the flow guide cone 403 is arranged in the positioning groove 402, the bottom of the flow guide cone 403 is provided with a thread and is connected with the positioning groove 402 through the thread, and the sharp end of the flow guide cone 403 faces the direction of the water flow.

[0034] The effect is that the flow guide plate 400 is matched with the flow guide opening 401 to guide the water flow contacting the pressure sensor chip, so as to reduce the probability of icing, and the flow guide cone 403 is used for guiding the water flow contacting the pressure sensor chip, so as to reduce the probability of icing in the lower pipe cylinder 200.

[0035] Working principle: the lower pipe cylinder 200 is connected with the upper pipe cylinder 100 through the outer thread pipe 104 and the inner thread 105, the communication block 205 in the heating sleeve pipe is powered, and then the electric heating wire 204 is powered and heated, so that the heat emitted by the electric heating wire 204 is transmitted to the lower pipe cylinder 200, and the flow guide plate 400 connected with the lower pipe cylinder 200 is also heated, the water passing through the flow guide plate 400 is branched through the flow guide opening 401 and the flow guide cone 403 arranged on the flow guide plate 400, so as to reduce the probability of icing, so that the water after being heated contacts the pressure sensor core 103, thereby avoiding damage to the pressure sensor due to icing in the pipeline, and the service life of the pressure sensor is improved, the water passing through the upper pipe cylinder 100 is heat-preserved by the protective sleeve 201 and the heat-preservation cotton 202 filled in the protective sleeve 201, and the circuit assembly 101 and the pressure sensor core 103 are also heat-preserved, so that the anti-freezing capability of the pressure sensor is improved, and the service life of the pressure sensor in winter and cold regions is improved.

[0036] In addition, it needs to be explained that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles described in the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. An anti-ice pressure sensor, comprising a circuit assembly (101) arranged at the top of an upper tube (100), a positioning ring (102) arranged at the lower part of the circuit assembly (101), and a pressure sensor core (103) arranged at the lower part of the positioning ring (102), characterized in that: The lower part of the upper pipe cylinder (100) is provided with a lower pipe cylinder (200), the upper pipe cylinder (100) and the lower pipe cylinder (200) are communicated through threads, the outer surface of the barrel of the upper pipe cylinder (100) is provided with a protective sleeve (201), the protective sleeve (201) is filled with thermal insulation cotton (202), the outer surface of the middle part of the barrel of the lower pipe cylinder (200) is provided with a heating sleeve (203), a pair of electric heating wires (204) are arranged in the heating sleeve (203) along the axial direction, a plurality of communication blocks (205) are arranged between the electric heating wires (204), and one side of one of the communication blocks (205) is provided with a wiring pipe (206).

2. An anti-ice pressure sensor as claimed in claim 1, characterized in that: The end of the wiring pipe (206) away from the heating sleeve (203) is provided with a waterproof cap (207), and the end of the wiring pipe (206) close to the heating sleeve (203) is provided with a sealing joint (208), the sealing joint (208) is communicated with the inside of the heating sleeve (203).

3. An anti-ice pressure sensor as claimed in claim 2, wherein: The upper and lower ends of the lower pipe cylinder (200) are both provided with an externally threaded pipe (104), and the lower end of the lower pipe cylinder (200) is internally provided with an internally threaded pipe (105).

4. An anti-ice pressure sensor as claimed in claim 3, characterised in that: The upper part of the lower pipe cylinder (200) is provided with a sealing ring (300) away from the externally threaded pipe (104), and the upper part of the sealing ring (300) is provided with a sealing ring (301).

5. An anti-ice pressure sensor as claimed in claim 4, characterised in that: The lower end of the upper pipe cylinder (100) is externally provided with a sealing groove (302), and the sealing groove (302) is sealingly matched with the sealing ring (301).

6. An anti-ice pressure sensor as claimed in claim 5, characterised in that: The inner wall of the middle part of the barrel of the lower pipe cylinder (200) is provided with a guide plate (400), a plurality of guide holes (401) are arranged on the guide plate (400), one side of the guide plate (400) facing the water flow direction is provided with a positioning groove (402), and a guide cone (403) is arranged in the positioning groove (402).

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