Capillary viscometer

Abstract

The utility model relates to the technical field of fluid viscosity detection, in particular to a capillary viscometer which comprises a viscometer body, a first wrapping part, a second wrapping part, a heat tracing pipe and a detection assembly. Two sections of material conveying passages are arranged in the viscometer body and are used for circulating detected fluid, the first wrapping piece and the second wrapping piece are used for wrapping the viscometer body, and the heat tracing pipe is used for heating or cooling the detected fluid; according to the capillary viscometer disclosed by the utility model, the capillary viscometer is integrally designed through the matching effect of all the components, the arrangement of excessive connecting components is avoided, the leakage of materials or heating media due to high temperature is prevented, meanwhile, the heat control of the whole section of viscometer body is realized, and the blockage caused by the cooling of detected fluid in the material conveying passage is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of fluid viscosity detection, and in particular to a capillary viscometer. Background Art

[0002] In the field of fluid viscosity detection technology, a viscometer is usually used to control and detect the pressure difference, kinetic energy, initial velocity and temperature of the detected fluid to further calculate the viscosity of the detected fluid. Among them, the capillary viscometer, namely the Saybolt viscometer, is often widely used because of its high detection accuracy, relatively stable operation and strong adaptability to working conditions. The capillary viscometer usually fills the fluid to be detected in a sample container and places the detected fluid in a constant temperature bath. The viscosity of the detected fluid is calculated by detecting the time it takes for the detected fluid to flow from the sample container into the liquid receiver and the liquid level to reach the scale line. The longer the time, the greater the viscosity of the detected fluid.

[0003] However, the existing capillary viscometers are often complex in structure, large in size, and even weigh up to 100 kg. They need to be composed of multiple components, with many mounting accessories and usually connected by bolts. Therefore, they are very inconvenient during installation and maintenance, and have very high requirements for the installation location and space. The manufacturing materials are consumable and the cost is high. In addition, since traditional capillary viscometers usually use a large number of bolts to connect, the components cannot be welded or sealed. When the capillary viscometers are under high temperature and high pressure, leakage may occur due to inadequate heat tightening. The more components there are, the greater the probability of incompletely tightened bolts due to operator errors. Finally, since the heat medium of the traditional capillary viscometers cannot fully conduct heat to the entire viscometer, the detected fluid may be blocked in the viscometer due to cooling.

[0004] Therefore, the present application proposes a capillary viscometer, which integrates the entire capillary viscometer into an integrated design, arranges the material conveying pipe inside the viscometer, and wraps the cavity for circulating heat medium in the outer layer of the viscometer. At the same time, a heating pipe is arranged in the middle exposed section in the axial direction of the viscometer, which further reduces the arrangement of connecting parts such as bolts, reduces the risk of accidents such as leakage due to inadequate heat tightening, and allows the operator to control the heat at each position of the entire capillary viscometer to prevent the detected fluid from being blocked in the capillary viscometer. At the same time, the integrated capillary viscometer design makes the equipment lighter and easier to install or maintain, and reduces the requirements of the capillary viscometer for the installation space. Summary of the invention

[0005] To achieve the above objectives, the present application is implemented through the following technical solutions: The present invention provides a capillary viscometer, including: a viscometer body, a first package, a second package, a heating pipe and a detection component;

[0006] The viscometer body is provided with a first material conveying passage, a second material conveying passage and a gear pump; the first material conveying passage is provided with a first feed port and a first discharge port, the first feed port is used to receive the material to be detected, and the first discharge port is connected to the inlet of the gear pump; the second material conveying passage is provided with a second feed port and a second discharge port, the second feed port is connected to the outlet of the gear pump, and the second discharge port is used to convey the material to be detected out of the viscometer body;

[0007] The first wrapping piece is wrapped around the outside of the viscometer body close to the gear pump, and a first heat medium cavity is formed between the inner wall of the first wrapping piece and the outer wall of the viscometer body; the second wrapping piece is wrapped around the outside of one end of the viscometer body away from the gear pump, and a second heat medium cavity is formed between the inner wall of the second wrapping piece and the outer wall of the viscometer body;

[0008] The first heat medium cavity is used for circulating a first heat exchange medium, and the second heat medium cavity is used for passing a second heat exchange medium and providing heat for the viscometer body;

[0009] The heat tracing pipe is wound around the viscometer body and is located between the first heat medium cavity and the second heat medium cavity, and the heat tracing pipe is used to circulate a third heat exchange medium;

[0010] The detection component is arranged in the second material conveying passage, and is used for detecting the viscosity of the detected material in the second material conveying passage.

[0011] Preferably, the second material conveying passage comprises a large diameter section and a capillary section, and the inner diameter of the capillary section is smaller than the inner diameter of the large diameter section;

[0012] The detection assembly includes a first pressure detection member, a second pressure detection member and a temperature detection member arranged on the second material conveying passage, the first pressure detection member is arranged at the inlet end of the capillary section, and the second pressure detection member is arranged at the outlet end of the capillary section;

[0013] The temperature detecting member is located between the second feed port and the inlet end of the capillary section.

[0014] Preferably, the viscometer body includes a material passing portion and a detection portion, the first material conveying passage and the second material conveying passage are arranged in the detection portion, the first feed port and the second discharge port are connected to the first end of the detection portion, and the first end of the detection portion is inserted into the material passing portion.

[0015] Preferably, the material passing part includes a feed pipe and a discharge pipe which are interconnected, the feed pipe and the discharge pipe are arranged at an angle, the second wrapping piece is wrapped around the feed pipe and the discharge pipe, and the first end of the detection part is inserted into the first end of the feed pipe.

[0016] Preferably, the capillary viscometer further comprises a bent tube, one end of which is connected to the second discharge port, and the other end of which extends into the discharge pipe.

[0017] Preferably, the first packaging member includes an inner shell and an outer shell, the outer shell includes the viscometer body, the inner shell is wrapped around the gear pump, and the inner shell is located in the outer shell and isolated between the gear pump and the first heat medium chamber.

[0018] Preferably, the first heat exchange medium includes water vapor and thermal oil, and the temperature of the first heat exchange medium is between 270-280 degrees Celsius.

[0019] Preferably, the capillary viscometer further comprises a first pipeline and a second pipeline, one end of the first pipeline is connected to the top of the first heat medium cavity; one end of the second pipeline is connected to the bottom of the first heat medium cavity;

[0020] When the first heat exchange medium is water vapor, the first pipeline is used to communicate with a pipeline supplying the first heat exchange medium;

[0021] When the first heat exchange medium is thermal oil, the second pipeline is used to communicate with a pipeline that supplies the first heat exchange medium.

[0022] Preferably, the capillary viscometer further comprises a drain pipe, and the drain pipe is in communication with the first pipeline and / or the second pipeline.

[0023] Preferably, the material passing portion and the detection portion are connected via a flange.

[0024] It can be seen from the above technical solutions that this application has the following advantages:

[0025] In the present invention, a capillary viscometer is provided, comprising a viscometer body, a first wrapping piece, a second wrapping piece, a heating pipe and a detection component; the viscometer body is provided with two sections of material conveying passages for circulating the detected fluid, the first wrapping piece and the second wrapping piece are used to wrap the viscometer body, and the heating pipe is used to heat up or cool down the detected fluid; through the cooperation of the above components, the capillary viscometer is designed in an integrated manner, avoiding the setting of too many connecting components to prevent leakage of materials or heat media due to high temperature, and at the same time, by wrapping the viscometer body with each of the wrapping pieces and covering the exposed position in the middle of the viscometer body with the heating pipe, the heat of the entire viscometer body is controlled to prevent the detected fluid from cooling in the material conveying passage and causing blockage, and due to the integrated design, the volume of the capillary viscometer is reduced, the requirement of the capillary viscometer for installation space is reduced, and the capillary viscometer is easier to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 is a schematic diagram of a top cross-sectional structure of a capillary viscometer according to an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of a capillary viscometer according to an embodiment of the present invention.

[0029] The accompanying drawings are denoted as follows:

[0030] 10-viscometer body; 11-first material conveying passage; 12-second material conveying passage; 13-gear pump; 14-elbow; 20-first wrapping piece; 30-second wrapping piece; 40-detection assembly; 41-temperature detection piece; 42-first pressure detection piece; 43-second pressure detection piece; 50-heating pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] As used in the present invention, the singular forms "a", "an" and "the" include plural objects, the term "or" is generally used in a sense including "and / or", the term "several" is generally used in a sense including "at least one", and the term "at least two" is generally used in a sense including "two or more". In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or at least two of the features. The term "proximal end" is usually the end close to the operator, and the term "distal end" is usually the end close to the patient. "One end" and "the other end" as well as "proximal end" and "distal end" usually refer to two corresponding parts, which include not only the endpoints. The terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. In addition, as used in the present invention, an element is arranged on another element, which usually only means that there is a connection, coupling, matching or transmission relationship between the two elements, and the connection, coupling, matching or transmission between the two elements can be direct or indirect through an intermediate element, and it cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, one element can be in any position such as inside, outside, above, below or on one side of another element, unless the content clearly indicates otherwise. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figure 1As shown, a capillary viscometer of the present embodiment includes: a viscometer body 10, a first wrapping member 20, a second wrapping member 30, a detection assembly 40 and a heating pipe 50; the viscometer body 10 is provided with a first material conveying passage 11, a second material conveying passage 12 and a gear pump 13; the first material conveying passage 11 has a first feed port and a first discharge port, the first feed port is used to receive the material to be detected, and the first discharge port is connected to the inlet of the gear pump 13; the second material conveying passage 12 has a second feed port and a second discharge port, the second feed port is connected to the outlet of the gear pump 13, and the second discharge port is used to convey the material to be detected out of the viscometer body 10; the gear pump 13 is used to provide forward power for the material to be detected in the first material conveying passage 11 and the second material conveying passage 12; A wrapping piece 20 is wrapped around the outside of the viscometer body 10 close to the gear pump 13, and a first heat medium cavity is formed between the inner wall of the first wrapping piece 20 and the outer wall of the viscometer body 10; the second wrapping piece 30 is wrapped around the outside of one end of the viscometer body 10 away from the gear pump 13, and a second heat medium cavity is formed between the inner wall of the second wrapping piece 30 and the outer wall of the viscometer body 10; the first heat medium cavity is used to circulate the first heat exchange medium, and the second heat medium cavity is used to pass the second heat exchange medium and provide heat for the viscometer body 10; the heating pipe 50 is wound around the viscometer body 10 and is located between the first heat medium cavity and the second heat medium cavity, and the heating pipe 50 is used to circulate the third heat exchange medium; the detection component 40 is arranged in the second material conveying passage 12, and is used to detect the viscosity of the material being detected in the second material conveying passage 12.

[0034] It is worth noting that the first heat exchange medium and the second heat exchange medium are heat medium, including thermal oil, water vapor, etc., and the third heat exchange medium can be a heat medium or a refrigerant. When the third heat exchange medium is a heat medium, it can be thermal oil or water vapor, etc., and when the third heat exchange medium is a refrigerant, it can be cold water or refrigerant. The above are all prior arts, and this application does not make too many restrictions here.

[0035] It is worth noting that the material to be detected is usually a non-Newtonian fluid, including polyvinyl chloride, polyethylene, polyacrylamide, nylon 6, PVS, etc., and can also be a Newtonian fluid, including water, alcohol or other low molecular weight compounds, etc.; the capillary viscometer obtains various parameters of the material to be detected through the detection component 40 and obtains the shear rate of the fluid to be detected through the formula D=dv / dx, and calculates the viscosity of the material to be detected through the Newton formula: τ=ηdv / dx=ηD, wherein η is the viscosity, and the value of η is related to the material of the material to be detected; τ is the shear stress, that is, the force per unit area; D is the flow velocity gradient of the fluid to be detected, That is, the time required to flow through a unit length; in addition, the material to be detected can also be detected by using the Saybolt viscosity calculation formula, which is the time required for 200 ml to flow out at a specified temperature, in seconds; the above are all prior arts, and the viscosity calculation formula also includes the Engler viscosity calculation formula, etc. In other alternative embodiments, the temperature detection component, the first pressure detection component, and the second pressure detection component in this embodiment can also be replaced with other detection elements such as a stopwatch to calculate the viscosity of the detected fluid through different viscosity calculation formulas. The above are all within the protection scope of this application, so this application will not make too many restrictions and redundant descriptions here.

[0036] Please refer to Figure 1 and Figure 2 As shown, the first packaging member 20 includes an inner shell and an outer shell, the outer shell is wrapped around the viscometer body, the inner shell is wrapped around the gear pump 13, and the inner shell is located inside the outer shell and isolated between the gear pump 13 and the first heat medium cavity to prevent the gear pump 13 from directly contacting the first heat medium cavity, thereby preventing the gear pump 13 from shutting down or being damaged after being heated to high temperature. The capillary viscometer also includes a first pipeline and a second pipeline, one end of the first pipeline is connected to the top of the first heat medium cavity; one end of the second pipeline is connected to the bottom of the first heat medium cavity; when the first heat exchange medium is water vapor, since the density of water vapor is lower than that of air, it will flow upward under normal circumstances. In order to ensure that the water vapor fills the first heat medium cavity, the first pipeline is used to communicate with the pipeline supplying the first heat exchange medium, and the pipeline supplying the first heat exchange medium is a ventilation pipeline; when the first heat exchange medium is thermal insulation oil, since the density of thermal insulation oil is higher than that of air, it will flow downward under normal circumstances. In order to ensure that the thermal insulation oil fills the first heat medium cavity, the second pipeline is used to communicate with the pipeline supplying the first heat exchange medium, and the pipeline supplying the first heat exchange medium is an oil pipeline.

[0037] It is worth noting that the capillary viscometer also includes a drain pipe, which is connected to the first pipeline and / or the second pipeline. The drain pipe is used to drain the first heat exchange medium in the first heat medium cavity when the capillary viscometer needs to be maintained or shut down; when the first heat exchange medium is water vapor, the drain pipe is connected to the first pipeline, and is used to allow the water vapor in the first heat medium cavity to naturally pass through the drain pipe upward to leave the first heat medium cavity; when the first heat exchange medium is thermal oil, the drain pipe is connected to the second pipeline, and is used to allow the thermal oil in the first heat medium cavity to naturally pass through the drain pipe downward to leave the first heat medium cavity. The drain pipe is usually a cylindrical pipe made of cast iron or copper metal, and this application does not make too many restrictions here.

[0038] In the present application, the first package 20, the second package 30, the first pipeline and the second pipeline are all made of known heat-conducting metals such as cast iron or copper or other heat-conducting materials. In addition, the temperature of the first heat exchange medium and the second heat exchange medium is generally between 270 and 280 degrees Celsius, which can be adjusted according to the material of the detected fluid or other working conditions. The present application does not make too many restrictions on the above.

[0039] Please refer to Figure 1 As shown, the viscometer body 10 includes a material passing part and a detection part, the first material conveying passage 11 and the second material conveying passage 12 are arranged in the detection part, the first feed port and the second discharge port are connected to the first end of the detection part, the first end of the detection part is inserted into the material passing part, and the material passing part and the detection part are sealed. In addition, the material passing part includes a feed pipe and a discharge pipe that are connected to each other, the feed pipe and the discharge pipe are arranged at an angle, and the feed pipe and the detection part are coaxially arranged; the second wrapping piece is wrapped around the feed pipe and the discharge pipe, the first end of the detection part is inserted into the first end of the feed pipe, and the feed pipe is used to convey the detected fluid into the first material conveying passage 11; the second discharge port of the second material conveying passage 12 is provided with a bend pipe 14, one end of the bend pipe 14 is connected to the second discharge port, and the other end extends into the discharge pipe, and the bend pipe 14 is used The invention is used to convey the detected fluid in the second material conveying passage 12 to the discharge pipe, and prevent the viscometer body 10 from conveying the detected fluid to the detection part through the second material conveying passage during the feeding process, and prevent the pressure generated during the feeding process from affecting the detection of the detected fluid in the detection part; the feed pipe and the discharge pipe can be set at 90 degrees, or at an angle of 80 degrees or other degrees, and the end of the bent pipe extending into the discharge pipe is parallel to the axial direction of the discharge pipe, and can also be set at an angle; the above application is not too limited here.

[0040] Please refer to Figure 1 As shown, the second material conveying passage 12 includes a large diameter section and a capillary section, and the inner diameter of the capillary section is smaller than the inner diameter of the large diameter section; the detection component 40 includes a temperature detection component 41, a first pressure detection component 42, and a second pressure detection component 43 arranged on the second material conveying passage 12, the first pressure detection component 42 is arranged at the inlet end of the capillary section, and the second pressure detection component 43 is arranged at the outlet end of the capillary tube; the temperature detection component 41 is located between the second feed port and the inlet end of the capillary tube. The first pressure detection component 42 is used to detect the pressure value of the detected fluid when it enters the capillary section, and the second pressure detection component 43 is used to detect the pressure value of the detected fluid when it flows out of the capillary section, so as to obtain the pressure loss of the detected fluid through the capillary section; the temperature detection component 41 is used to detect the temperature of the detected fluid before it enters the capillary section.

[0041] It is worth noting that the first pressure detection component 42 and the second pressure detection component 42 can be a pressure calibrator or a pressure sensor, and the temperature detection component can be a thermometer or an infrared temperature detector or a fluid temperature tester; the inner diameter of the capillary section is usually 0.5-1 mm, which can be adjusted according to different working conditions and the material of the fluid being detected. The above are all existing technologies, and this application does not make too many limitations or elaborations here.

[0042] In addition, please refer to Figure 1 and Figure 2 As shown, the detection part and the material passing part are provided with openings, and the detection part and the material passing part are fixedly connected by flanges and bolts; and the heating pipe 50 is wound around the detection part and abuts against one axial side of the flange on the detection part, and the heating pipe 50 is clamped between the bolts on the flange and the detection part to prevent the heating pipe 50 from falling off, and realize the detachable connection between the detection part and the material passing part in the viscometer body 10, and at the same time realize that the detection part as a whole can be heat-controlled by the first wrapping member 20, the second wrapping member 30 and the heating pipe 50.

[0043] Please refer to Figure 1 and Figure 2As shown, two passages are opened on the first wrapping member 20, which are respectively used to connect the temperature detecting member 41 and the first pressure detecting member 42 with the detecting part through the first wrapping member 20. The contact surfaces between the first wrapping member 20 and the temperature detecting member 41 and the first pressure detecting member 42 are usually made of heat-insulating material, and / or there is a gap between the first wrapping member 20 and the temperature detecting member 41 and the first pressure detecting member 42 to prevent the temperature detecting member 41 and the pressure detecting member 42 from being damaged due to high temperature.

[0044] It is worth noting that in the present application, the inner walls of the first wrapping member 20 and the second wrapping member 30 are integrally formed or sealed with the viscometer body 10, and are no longer connected by bolts or flanges, so as to avoid leakage of heat medium due to inadequate thermal tightening of the connecting parts, thereby making the capillary viscometer safer and more reliable.

[0045] Please refer to Figure 2 As shown, one end of the first pipeline and the second pipeline are both provided with flanges, and the flanges are used to enable the first pipeline and the second pipeline to be connected and installed with a heat medium source at the work site, so that the installation of the capillary viscometer is more convenient. It is worth noting that the heat medium source can be a steam heating tank or a heat preservation oil tank. The specific heat medium source to be used depends on the specific heat medium selected under different working conditions, and this application does not make too many restrictions here.

[0046] In summary, in the present invention, a capillary viscometer is proposed, which systematically solves the problems of high installation requirements, high installation difficulty, possible leakage due to insufficient heat tightening, easy blockage in the pipeline due to cooling of the detected fluid, and high maintenance difficulty of the traditional capillary viscometer. Through the coordinated arrangement of the viscometer body 10, the first package 20, the second package 30, the heat tracing pipe 50 and the detection component 40, the entire capillary viscometer is designed to be integrated, the material conveying pipe is arranged inside the viscometer, and the cavity of the circulating heat medium is wrapped in the outer layer of the viscometer, and the heat tracing pipe is arranged in the middle exposed section of the axial direction of the viscometer, which further reduces the arrangement of connecting parts such as bolts, reduces the risk of accidents caused by insufficient heat tightening, and allows operators to control heat at each position of the entire capillary viscometer to prevent the detected fluid from clogging in the capillary viscometer. At the same time, the integrated capillary viscometer design makes the equipment lighter and easier to install or maintain, and reduces the requirements of the capillary viscometer for the installation position space.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A capillary viscometer, characterized in that: include: Viscometer body, first package, second package, heating pipe and detection assembly; The viscometer body is provided with a first material conveying passage, a second material conveying passage and a gear pump; the first material conveying passage is provided with a first feed port and a first discharge port, the first feed port is used to receive the material to be detected, and the first discharge port is connected to the inlet of the gear pump; the second material conveying passage is provided with a second feed port and a second discharge port, the second feed port is connected to the outlet of the gear pump, and the second discharge port is used to convey the material to be detected out of the viscometer body; The first wrapping piece is wrapped around the outside of the viscometer body close to the gear pump, and a first heat medium cavity is formed between the inner wall of the first wrapping piece and the outer wall of the viscometer body; the second wrapping piece is wrapped around the outside of one end of the viscometer body away from the gear pump, and a second heat medium cavity is formed between the inner wall of the second wrapping piece and the outer wall of the viscometer body; The first heat medium cavity is used to introduce a first heat exchange medium, and the second heat medium cavity is used to introduce a second heat exchange medium and provide heat for the viscometer body; The heat tracing pipe is wound around the viscometer body and is located between the first heat medium cavity and the second heat medium cavity, and the heat tracing pipe is used to pass a third heat exchange medium; The detection component is arranged in the second material conveying passage, and is used for detecting the viscosity of the detected material in the second material conveying passage.

2. A capillary viscometer according to claim 1, characterized in that: The second material conveying passage comprises a large diameter section and a capillary section which are connected to each other, and the inner diameter of the capillary section is smaller than the inner diameter of the large diameter section; The detection assembly includes a first pressure detection member, a second pressure detection member and a temperature detection member arranged on the second material conveying passage, the first pressure detection member is arranged at the inlet end of the capillary section, and the second pressure detection member is arranged at the outlet end of the capillary section; The temperature detecting member is located between the second feed port and the inlet end of the capillary section.

3. A capillary viscometer according to claim 1, characterized in that: The viscometer body includes a material passing portion and a detection portion, the first material conveying passage and the second material conveying passage are arranged in the detection portion, the first feed port and the second discharge port are connected to the first end of the detection portion, and the first end of the detection portion is inserted into the material passing portion.

4. A capillary viscometer according to claim 3, characterized in that: The material passing part includes a feed pipe and a discharge pipe which are interconnected, the feed pipe and the discharge pipe are arranged at an angle, the second wrapping piece is wrapped around the feed pipe and the discharge pipe, and the first end of the detection part is inserted into the first end of the feed pipe.

5. A capillary viscometer according to claim 4, characterized in that: The capillary viscometer also includes a bent tube, one end of which is connected to the second discharge port, and the other end of which extends into the discharge pipe.

6. A capillary viscometer according to claim 1, characterized in that: The first packaging member includes an inner shell and an outer shell, the outer shell is wrapped around the viscometer body, the inner shell is wrapped around the gear pump, and the inner shell is located in the outer shell and isolated between the gear pump and the first heat medium chamber.

7. A capillary viscometer according to claim 1, characterized in that: The first heat exchange medium includes water vapor and thermal oil, and the temperature of the first heat exchange medium is between 270-280 degrees Celsius.

8. A capillary viscometer according to any one of claims 1 to 7, characterized in that: The capillary viscometer further includes a first pipeline and a second pipeline, one end of the first pipeline is connected to the top of the first heat medium chamber; One end of the second pipeline is connected to the bottom of the first heat medium chamber; When the first heat exchange medium is water vapor, the first pipeline is used to communicate with a pipeline supplying the first heat exchange medium; When the first heat exchange medium is thermal oil, the second pipeline is used to communicate with a pipeline that supplies the first heat exchange medium.

9. A capillary viscometer according to claim 8, characterized in that: The capillary viscometer further includes an exhaust pipe, which is in communication with the first pipeline and / or the second pipeline.

10. A capillary viscometer according to claim 3, characterized in that: The material passing part and the detection part are connected through a flange.

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