High-viscosity fluid temperature measuring device

Abstract

The utility model discloses a temperature measuring device for high-viscosity fluid, which is used for improving the temperature uniformity of the high-viscosity fluid after heat exchange and comprises a heat preservation shell, a temperature measuring device and a temperature measuring device, the mixer is fixed in the thermal insulation shell at the front section of the temperature sensor and is used for mixing the measured high-viscosity fluid and improving the temperature uniformity of the measured high-viscosity fluid; a plurality of temperature sensor joints are uniformly fixed on the thermal insulation shell at the rear section of the mixer; the temperature sensors are fixed in the temperature sensor connectors, and the fixing depth is adjustable. According to the utility model, the problem that the temperature after heat exchange is not uniform and cannot be accurately measured due to higher fluid viscosity and lower flow velocity can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high viscosity fluid temperature measuring device, especially relate to a kind of for the temperature uniformity improvement and measuring device of high viscosity fluid after passing through uneven heat exchange. BACKGROUND

[0002] In the field of automotive air conditioning and thermal management, some manufacturers pay more and more attention to the performance of heat exchanger when air conditioning heat pump operates, and even study the performance under extreme climate conditions. Under extremely low temperature environment, the viscosity of various media in the automobile, such as antifreeze and lubricating oil, will rise sharply, the heat exchange performance will become poor, and the fluid temperature is very uneven. Therefore, many manufacturers pay attention to the performance of heat exchanger at low temperature.

[0003] For the research on the heat exchange performance of heat exchanger, it is necessary to measure and control the inlet temperature of the fluid of the heat exchanger and measure the outlet temperature. For the medium heated or cooled by the heat exchanger, the temperature is necessarily uneven. However, when the viscosity of the medium is small (such as water and glycol solution at normal temperature), the temperature of the fluid in the pipe can be made uniform by a long straight pipe section, elbows and pipe diameter reduction. However, when the viscosity of the medium is high (such as lubricating oil and glycol solution at low temperature), the fluid in the pipe is in a laminar flow state due to the low flow rate of the fluid. Therefore, it is difficult to ensure the accuracy of the temperature measurement of the fluid in the pipe by the above-mentioned methods. Therefore, it is of great significance to solve the uniformity of the temperature mixing of high viscosity fluid and the accuracy of the temperature measurement for the performance research of some heat exchangers under extreme conditions.

[0004] Chinese patent CN201310140184.7 discloses a high viscosity fluid mixer, which comprises a variable diameter flow channel, a rotary twist flow divider and an axial flow guide. The variable diameter flow channel is composed of a constant diameter section, a transition cone section and a reduced diameter section. The rotary twist flow divider is provided with a conical flow divider disc which is fitted in the transition cone section. A bearing is arranged between the conical flow divider disc and the transition cone section. A conical flow channel is arranged on the conical flow divider disc, and the small end of the conical flow channel points to the reduced diameter section. A shaft is fixedly connected to the axis of the conical flow divider disc. An annular rotary flow channel coaxial with the shaft is arranged in the constant diameter section. A helical blade is fixedly connected between the rotary flow channel and the shaft. The shaft is fitted in the core pipe of the axial flow guide through a shaft sleeve. A conical cap is arranged at the reverse flow end of the core pipe. An annular fixed flow channel is fixedly connected in the constant diameter section. An axial extension flow guide plate is fixedly connected between the core pipe and the annular fixed flow channel. The high viscosity fluid can be maximized to retain the viscosity, and the structure is simple and easy to implement, which is suitable for popularization and application. However, the scheme cannot effectively monitor the temperature of high viscosity fluid, and cannot be used for the research on the heat exchange performance of heat exchanger. SUMMARY

[0005] A series of simplified concepts are introduced in the utility model content part, and the simplified concepts are simplified from the prior art in the field, which will be further described in detail in the specific embodiment part. The utility model content part of the utility model does not mean to attempt to limit the key features and necessary technical features of the claimed technical solution, and even less means to determine the protection scope of the claimed technical solution.

[0006] The technical problem to be solved by the utility model is to provide a high-viscosity fluid mixing and temperature measuring device which can avoid the non-uniform fluid temperature and inaccurate temperature measurement caused by high viscosity of fluid after heat exchange.

[0007] The high-viscosity fluid refers to fluid with dynamic viscosity greater than or equal to 20 mPa·s (water has dynamic viscosity of 1 mPa·s at 20 DEG C).

[0008] To solve the above technical problem, the utility model provides a high-viscosity fluid temperature measuring device, which comprises:

[0009] The heat preservation shell 1 is used for passing the measured high-viscosity fluid, and the pipeline between the mixer 2 and the temperature sensor 4 is heat preserved to avoid heat leakage to cause poor temperature uniformity and inaccurate temperature measurement;

[0010] The mixer 2 is fixed in the heat preservation shell 1 in the front section of the temperature sensor 4, and is used for mixing fluids at different temperatures to improve the uniformity of the high-viscosity fluid temperature;

[0011] The plurality of temperature sensor joints 3 are uniformly fixed on the heat preservation shell 1 in the rear section of the mixer 2; the plurality refers to greater than or equal to 3;

[0012] The temperature sensor 4 is fixed in the temperature sensor joint 3, and the fixing depth is adjustable;

[0013] The front section and the rear section are divided according to the flow direction of the high-viscosity fluid, that is, the front and the rear are relative, the part flowing first is the front section, and the part flowing last is the rear section. Exemplary description: the high-viscosity fluid flows through the A position first, flows through the B position last, and then flows through the C position, so that A and B can be understood as the front section of C, and B and C can be understood as the rear section of A.

[0014] Optionally, the self-processing grid-shaped mixer 2 or the SX type and SV type mixers 2 used for fluid mixing in the chemical industry are adopted, so that the outlet temperature uniformity of the mixer 2 is better than 0.2 DEG C.

[0015] Preferably, the high-viscosity fluid temperature measuring device is further improved, and the heat preservation shell 1 is formed into a regular polygon in section.

[0016] The plurality of temperature sensor joints 3 are evenly and vertically distributed on each side of the regular polygon along the circumference of the heat preservation shell 1 and are perpendicular to the plane of each side.

[0017] Preferably, the high-viscosity fluid temperature measuring device is further improved, and further comprises:

[0018] A mixing pipeline is formed in the front section of the mixer 2, is connected to the inlet of the mixer 2, and is used for pre-mixing.

[0019] Preferably, the high-viscosity fluid temperature measuring device is further improved, and the diameter of the mixing pipeline is smaller than the diameter of the mixer 2.

[0020] Alternatively, the mixing pipeline is formed with at least one elbow.

[0021] Preferably, the high-viscosity fluid temperature measuring device is further improved, and the heat preservation shell 1 is formed as a circular tube.

[0022] The plurality of temperature sensor joints 3 are evenly distributed along the circumference of the heat preservation shell 1.

[0023] Preferably, the high-viscosity fluid temperature measuring device is further improved, and each temperature sensor joint 3 is evenly distributed along a certain radial direction of the heat preservation shell 1, forming a structure similar to a temperature sensor joint ring.

[0024] Alternatively, each temperature sensor joint 3 is evenly arranged on different radii of the heat preservation shell 1 and is axially staggered.

[0025] Preferably, the high-viscosity fluid temperature measuring device is further improved, and the temperature sensor 4 is a platinum resistance, a thermistor, or Thermocouple .

[0026] Preferably, the high-viscosity fluid temperature measuring device is further improved, and the number of temperature sensor joints 3 and temperature sensors 4 is a, and a≥3.

[0027] Preferably, the high-viscosity fluid temperature measuring device is further improved, and the temperature sensor 4 is inserted into the temperature sensor joint 3 and the depth of the threaded connection is adjustable.

[0028] Preferably, the high-viscosity fluid temperature measuring device is further improved, and the ratio between the length of the mixer 2 and the diameter thereof is greater than or equal to 10.

[0029] The utility model discloses a high viscosity fluid temperature measuring device, the measured high viscosity fluid is through the mixer first, after temperature mixing even, then through the temperature sensor ring structure of the radial even distribution along the heat preservation shell pipe, that is, in the heat preservation shell certain radial position all azimuthal measurement temperature of the measured high viscosity fluid flowing through the radial position. Change each temperature sensor insertion depth in the measurement process should satisfy the basic requirement of temperature sensor to insertion depth, when the maximum difference of each temperature sensor measurement value is within 0.2 DEG C, think that temperature measurement is accurate, otherwise can continue to increase the mixer length or change the mixer structure properly. The utility model can avoid the problem that the temperature is not uniform after heat exchange and can not be measured accurately due to the high fluid viscosity and low flow rate. BRIEF DESCRIPTION OF DRAWINGS

[0030] The utility model drawings are intended to show the general characteristics of the methods, structures and / or materials used in the specific exemplary embodiments according to the utility model, and supplement the description in the specification. However, the utility model drawings are not drawn to scale and thus can not accurately reflect the precise structure or performance characteristics of any given embodiment, and the utility model drawings should not be interpreted as limiting or restricting the scope of values or attributes covered by the exemplary embodiments according to the utility model. The utility model will be further described in detail below in conjunction with the drawings and specific embodiments:

[0031] Figure 1 It is the structure schematic diagram of utility model embodiment.

[0032] Figure 2 It is the mixer structure schematic diagram of utility model embodiment.

[0033] Explanation of reference signs

[0034] Heat preservation shell 1

[0035] Mixer 2

[0036] Temperature sensor joint 3

[0037] Temperature sensor 4. Specific embodiments

[0038] The advantages and technical effects of the present application can be fully understood by the skilled in the art from the disclosure of the present application. The present application can be implemented or applied in different specific embodiments, and the details in the present application can be applied based on different viewpoints, and various modifications or changes can be made without departing from the general design idea of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. The exemplary embodiments of the present application can be implemented in various different forms, and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that the embodiments are provided to make the disclosure of the present application complete and complete, and to fully convey the technical solutions of the exemplary embodiments to the skilled in the art. It should be understood that when an element is referred to as "connected" or "coupled" to another element, the element can be directly connected or coupled to the other element, or there can be an intermediate element. Different is that when an element is referred to as "directly connected" or "directly coupled" to another element, there is no intermediate element. In all the drawings, the same reference signs always represent the same elements.

[0039] First embodiment

[0040] As Figure 1 shown, the arrow in the figure shows the flow direction of the measured high-viscosity fluid, and the present application provides a high-viscosity fluid temperature measuring device, which comprises:

[0041] The heat preservation shell 1 is used for passing the measured high-viscosity fluid, and the shape of the shell is not limited and can be made according to the actual situation. Preferably, the cross section of the shell is circular, which is beneficial to improve the temperature uniformity. The surface of the outer shell should be coated with a heat preservation material to form a heat preservation shell, so as to reduce the influence of heat leakage on temperature measurement; the heat preservation material is generally a material with a thermal conductivity less than or equal to 0.05 W / mK;

[0042] The mixer 2 is fixed in the heat preservation shell 1, and is preferably close to the measured high-viscosity fluid entering end of the heat preservation shell 1, which should be a cross grid or similar structure, and is not limited to self-processing or using SX and SV type static mixers 2;

[0043] Preferably, the ratio between the length of the mixer 2 and the pipe diameter is greater than or equal to 10;

[0044] The temperature sensor joint 3 is fixed on the heat preservation shell 1 behind the mixer 2, and at least three temperature sensor joints 3 are uniformly distributed in the circumferential direction, and the temperature sensor 4 is inserted into the temperature sensor joint 3 and the depth is adjustable through threaded connection.

[0045] For example, the upper part of the temperature sensor joint 3 is formed as a hollow pipe with an internal thread, and the temperature sensor joint 3 has an external thread, so that the temperature sensor 4 is inserted into the temperature sensor joint 3 by rotating and is fixed by screwing to a depth that can be adjusted.

[0046] The high-viscosity fluid temperature measuring device of the embodiment is used as follows: the measured high-viscosity fluid first passes through the mixer to improve the uniformity of the internal temperature of the fluid, and then the temperature is measured and compared by the multiple temperature sensors in the temperature measuring package, and in the process, the insertion depths of the temperature sensors are changed (the basic requirements of the temperature sensors on the insertion depths should be met), and when the maximum difference between the measured values of the temperature sensors is within 0.2 DEG C, it is considered that the temperature measurement is accurate, otherwise, the length of the mixer can be appropriately increased or the structure of the mixer can be changed.

[0047] The second embodiment is as follows:

[0048] Based on the main design idea of the first embodiment, the utility model provides a feasible embodiment of a high-viscosity fluid temperature measuring device, which comprises:

[0049] The temperature sensor joints 3 are uniformly distributed along a certain radial direction of the circular pipe.

[0050] For example, when three temperature sensor joints are arranged, they can be uniformly distributed along a certain radial direction of the circular pipe, and the included angle between the three temperature sensor joints is 120 degrees.

[0051] The temperature sensor 4 is a platinum resistance, which is fixed in the three temperature sensor joints 3 on the heat preservation shell 1 and is used for measuring the temperature of the fluid.

[0052] The third embodiment is as follows:

[0053] Based on the main design idea of the first embodiment, the utility model provides a feasible embodiment of a high-viscosity fluid temperature measuring device, which comprises:

[0054] The temperature sensor joints 3 are distributed along different radial directions of the circular pipe and are staggered in the radial direction.

[0055] For example, the three temperature sensor joints are arranged along different radial directions of the circular pipe, that is, they are staggered in the axial direction, and the three temperature sensor joints are also uniformly distributed in the radial direction, and the included angle between them is 120 degrees in the axial direction.

[0056] The temperature sensor 4 is a platinum resistance, which is fixed in the three temperature sensor joints 3 on the heat preservation shell 1 and is used for measuring the temperature of the fluid.

[0057] Optionally, the embodiment of the high-viscosity fluid temperature measuring device is further improved, and the temperature sensor 4 is inserted into the temperature sensor joint 3 by screwing to an adjustable depth.

[0058] For example, the upper part of the temperature sensor joint 3 is formed as a hollow pipe with an internal thread, and the temperature sensor joint 3 has an external thread, so that the temperature sensor 4 is inserted into the temperature sensor joint 3 by rotating and is fixed at a desired position by the depth of the threaded connection.

[0059] Fourth embodiment

[0060] Based on the main design idea of the above-mentioned first embodiment, the utility model provides a kind of feasible embodiment of high viscosity fluid temperature measuring device, including:

[0061] The heat preservation shell 1 is formed as a regular polygon in cross section, for example, a regular pentagon or a regular hexagon.

[0062] The plurality of temperature sensor joints 3 are evenly distributed on the edges of the regular polygon along the circumferential direction of the heat preservation shell 1 and are perpendicular to the faces on which the edges are located.

[0063] Fifth embodiment

[0064] Based on the main design idea of the above-mentioned first embodiment, the utility model provides a kind of feasible embodiment of high viscosity fluid temperature measuring device, and a mixing pipeline is added, which is formed in the front section of the mixer 2 and is connected to the inlet of the mixer 2 for premixing.

[0065] For example, the diameter of the mixing pipeline can be smaller than that of the mixer 2.

[0066] Alternatively, the mixing pipeline is formed with at least one elbow.

[0067] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0068] The utility model has been described in detail through specific embodiments and examples, but these do not constitute a limitation on the utility model. Those skilled in the art can make many modifications and improvements without departing from the principles of the utility model, and these should also be considered within the protection scope of the utility model.

Claims

1. A high viscosity fluid temperature measuring device for improving temperature uniformity of a high viscosity fluid after heat exchange, characterized by, It comprises: a heat-insulated casing (1) for passing the high-viscosity fluid to be measured; a mixer (2) fixed in the heat-insulated casing (1) in front of the temperature sensor (4) for mixing the high-viscosity fluid to be measured and improving the temperature uniformity of the high-viscosity fluid to be measured; a plurality of temperature sensor joints (3) fixed uniformly on the heat-insulated casing (1) behind the mixer (2); a temperature sensor (4) fixed in each temperature sensor joint (3) and adjustable in fixed depth.

2. The high-viscosity fluid temperature measuring device according to claim 1, wherein: the heat-insulated casing (1) is formed in a regular polygon in cross section; the plurality of temperature sensor joints (3) are distributed uniformly and perpendicularly on each side of the regular polygon along the circumference of the heat-insulated casing (1) and perpendicular to the plane of each side.

3. The high viscosity fluid temperature measurement device of claim 1, wherein, It further comprises: a mixing pipeline formed in front of the mixer (2) and connected to the inlet of the mixer (2) for pre-mixing.

4. The high-viscosity fluid temperature measuring device according to claim 3, wherein: the diameter of the mixing pipeline is smaller than that of the mixer (2); or, the mixing pipeline is formed with at least one elbow.

5. The high viscosity fluid temperature measurement device of claim 1, wherein: the heat-insulated casing (1) is formed in a circular tube; the plurality of temperature sensor joints (3) are distributed uniformly along the circumference of the heat-insulated casing (1).

6. The high-viscosity fluid temperature measuring device according to claim 5, wherein: each temperature sensor joint (3) is distributed uniformly along a certain radial direction of the heat-insulated casing (1); or, each temperature sensor joint (3) is arranged uniformly on different radials of the heat-insulated casing (1) and forms a stagger in the axial direction.

7. The high viscosity fluid temperature measuring device of any of claims 1-6, wherein: The temperature sensor (4) is a platinum resistance, a thermistor or thermocouple .

8. The high viscosity fluid temperature measuring device of any of claims 1-6, wherein: the number of the temperature sensor joints (3) and the temperature sensors (4) is a, and a≥3.

9. The high viscosity fluid temperature measuring device of any of claims 1-6, wherein: the temperature sensor (4) is inserted into the temperature sensor joint (3) and adjustable in fixed depth through screw connection.

10. The high viscosity fluid temperature measuring device of any of claims 1-6, wherein: the ratio between the length of the mixer (2) and its diameter is greater than or equal to 10.

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