Heat exchange device of sediment measuring instrument

Abstract

The utility model discloses a heat exchange device of a sediment measuring instrument, and belongs to the technical field of sediment measurement. A water inlet and a water outlet are formed in the side faces of the two ends of the shell. The water inlet and the water outlet are both communicated with the inner cavity of the shell; one end of the test tube extends into the shell and continuously extends to penetrate through the shell; and the guide sheet is fixedly arranged on the outer wall of the test tube on the shell. According to the application, heat exchange is carried out on the to-be-measured liquid in the flow measuring pipe through the sample water and the guide sheet, so that the temperature of the to-be-measured liquid in the flow measuring pipe is close to the temperature of a to-be-measured river, and the measurement error is reduced; during detection, river water of a to-be-detected river is taken on site as sample water, then the sample water is injected into the water inlet, the sample water enters the shell and exchanges heat with the guide piece and the flow measuring pipe, liquid to be detected is introduced into the flow measuring pipe, the liquid to be detected is the river water of the to-be-detected river, and when the liquid to be detected enters the flow measuring pipe, the liquid to be detected exchanges heat with the guide piece and the flow measuring pipe; and temperature compensation is carried out on the to-be-measured liquid.

Description

Technical Field

[0001] The utility model belongs to the technical field of sediment measurement, and in particular relates to a heat exchange device for a sediment measuring instrument. Background Art

[0002] Sediment measurement is one of the items of hydrological survey, which mainly focuses on the suspended sediment transport rate, bed load transport rate, riverbed quality and sediment particle grading analysis of the river. It is an important link in obtaining hydrological data.

[0003] The existing sediment measurement methods mainly include analytical method and physical method. The analytical method uses a sampler to collect and analyze samples, and then through volume accumulation, sedimentation, filtration, drying, weighing, etc., the weight of dry sand in a certain volume of muddy water is obtained. However, this method needs to be sent to the laboratory for measurement and cannot be measured on-site.

[0004] The physical method is to place the instrument or measuring probe directly into the water at the measuring point for on-site measurement, and use physical methods to degrade the sand content of the vehicle at that point through the instrument. On-site measuring instruments include isotope sand meters, photoelectric sand meters, ultrasonic sand meters, vibration sand meters and pressure sand meters. However, these on-site sand measuring instruments are affected by environmental factors such as weather, geomagnetic field and river water temperature, especially river water temperature. When the measured river water enters the test tube, the temperature is prone to change, resulting in certain errors in the measured value.

[0005] However, there is no temperature compensation device applied to the field of sediment measurement in the prior art. In view of this, it is necessary to design a heat exchange device for a sediment measuring instrument. Utility Model Content

[0006] The utility model provides a heat exchange device for a sediment measuring instrument to solve the technical problems mentioned in the background technology.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A heat exchange device for a sediment measuring instrument comprises a shell, with water inlets and water outlets provided on the sides of both ends of the shell; the water inlet and the water outlet are both connected to the internal cavity of the shell; a test tube, one end of which extends into the interior of the shell and continues to extend through the shell; and a guide piece fixedly arranged on the test tube on the outer wall of the shell.

[0009] As a further improvement of the technical solution, the guide vane is a corrugated structure; a gap is left between the guide vane and the inner wall of the shell.

[0010] As a further improvement of the technical solution, the guide vane is made of phosphor bronze.

[0011] As a further improvement of the technical solution, the portion of the test tube located inside the shell is arranged in a straight line.

[0012] As a further improvement of the technical solution, the housing includes a shell and a cover plate; one end of the shell is an open end; the cover plate is detachably connected to the open end of the shell; and the test tube passes through the shell and the cover plate.

[0013] As a further improvement of the technical solution, the water inlet and the water outlet are distributed on the shell.

[0014] As a further improvement of the technical solution, the shell further includes a first sealing ring; the first sealing ring is arranged at the connection between the shell and the cover plate.

[0015] As a further improvement of the technical solution, the shell also includes a hollow screw; connecting holes are opened at both ends of the shell; the hollow screw is threadedly connected to the connecting hole; and the test tube passes through the hollow screw and the connecting hole.

[0016] As a further improvement of the technical solution, the shell also includes a second sealing ring; the connecting hole includes a through hole and a threaded hole; the through hole is located between the interior of the shell and the threaded hole; the centers of the through hole and the threaded hole are on the same straight line; the through hole is connected to the threaded hole and the interior of the shell; the diameter of the through hole is smaller than the diameter of the threaded hole; the hollow screw is threadedly connected to the threaded hole; and the second sealing ring is located between the through hole and the hollow screw.

[0017] As a further improvement of the technical solution, the shell is made of phosphor bronze.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The utility model performs heat exchange on the liquid to be tested in the flow measuring tube through the sample water and the guide piece, so that the temperature of the liquid to be tested in the flow measuring tube is close to the temperature of the river to be tested, thereby reducing the measurement error. During the detection, river water of the river to be tested is taken on site as the sample water, and then the sample water is injected into the water inlet. The sample water enters the interior of the shell and performs heat exchange with the guide piece and the flow measuring tube. The flow measuring tube is passed with the liquid to be tested, and the liquid to be tested is the river water of the river to be tested. When the liquid to be tested enters and passes through the flow measuring tube, it performs heat exchange with the guide piece and the flow measuring tube, so as to perform temperature compensation on the liquid to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of a heat exchange device for a sediment measuring instrument of the utility model;

[0022] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0023] Figure 3 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0024] Figure 4 for Figure 1 Right view in

[0025] Figure numerals: 1-housing, 11-water inlet, 12-water outlet, 13-shell, 14-cover plate, 15-first sealing ring, 16-hollow screw, 17-second sealing ring, 18 through hole, 19-threaded hole, 2-test tube, 3-guide piece. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with general skills in the field to which the utility model belongs.

[0027] The words "first", "second" and similar words used in the specification and claims of the utility model invention application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form of "a", "an" or "the" and similar words do not indicate a quantitative limitation, but indicate the existence of at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] like Figure 1 and Figure 2As shown, a heat exchange device of a sediment measuring instrument comprises a shell 1, a test tube 2 and a guide plate 3. A water inlet 11 and a water outlet 12 are provided on the sides of both ends of the shell 1; the water inlet 11 and the water outlet 12 are both connected to the internal cavity of the shell 1, and the water inlet 11 and the water outlet 12 are connected to a circulation device for conveying sample water through a hose. The circulation device mainly comprises a water pump and a sample water box. The sample water (water from a test river taken on site) is filled in the sample water box. The input end of the water pump is connected to the sample water box, and its output end is connected to the water inlet 11. The water outlet 12 is connected to the sample water box. The sample water is conveyed to the inside of the shell 1 by the water pump, and the sample water then goes out from the water outlet 12 and enters the sample water box, forming a circulation loop. The temperature change of the sample water conveyed by the water pump is much smaller than the temperature change of the sample water entering the test tube 2, and can be ignored here; one end of the test tube 2 extends into the inside of the shell 1 The guide piece 3 is fixedly arranged on the outer wall of the test tube 2 located on the outer wall of the outer shell 1; preferably, the guide piece 3 is a corrugated structure to increase the heat exchange contact surface between the test tube 2 and the sample water and improve the speed of heat exchange. The guide piece 3 can be fixed on the test tube 2 by welding; a gap is left between the guide piece 3 and the inner wall of the outer shell 1. Preferably, the outer shell 1 is a cylindrical structure, the radius of the guide piece 3 is slightly smaller than the inner radius of the outer shell 1, and a gap is left between the guide piece 3 and the inner wall of the outer shell 1, so that the sample water passes through the guide piece 3 and makes the sample water fully contact with the inverted discharge 3; the guide piece 3 and the outer shell 1 are both made of phosphor copper, which is corrosion-resistant and wear-resistant and can reduce the washing of the sample water. At the same time, phosphor copper has good thermal conductivity, can carry out good heat exchange, and accelerate the heat exchange speed; the part of the test tube 2 located on the inner side of the outer shell 1 is arranged in a straight line.

[0031] Working method:

[0032] During the detection, river water from the river to be tested is taken on site as sample water, and then the sample water is injected into the water inlet 11. The sample water enters the interior of the outer shell 1 and exchanges heat with the guide piece 3 and the flow measuring tube 2. The flow measuring tube 2 is passed with the liquid to be tested. The liquid to be tested is the river water of the river to be tested. When the liquid to be tested enters and passes through the flow measuring tube 2, it exchanges heat with the guide piece 3 and the flow measuring tube 2 to perform temperature compensation on the liquid to be tested, so that the temperature of the liquid to be tested in the flow measuring tube 2 is close to the temperature of the river to be tested, thereby reducing measurement errors.

[0033] Embodiment 2:

[0034] like Figures 2 to 4As shown, compared with the first embodiment, the difference lies in: a structural form of the shell 1 is given; the shell 1 includes a shell body 13 and a cover plate 14; one end of the shell body 13 is an open end; the cover plate 14 is detachably connected to the open end of the shell body 13, and the cover plate 14 and the shell body 13 are detachably connected by bolts; the test tube 2 passes through the shell body 13 and the cover plate 14 to facilitate the installation of the test tube 2 and the guide plate 3. During installation, the guide plate 3 is first fixedly installed on the flow tube 2, and then the guide plate 3 is extended into the shell body 13; the water inlet 11 and the water outlet 12 are distributed on the shell body 13.

[0035] like Figure 3 As shown, preferably, the outer shell 1 also includes a first sealing ring 15. Optionally, the first sealing ring 15 is a cabin oil seal rubber ring; the first sealing ring 15 is arranged at the connection between the shell 13 and the cover plate 14 to make the connection between the outer shell 13 and the cover plate 14 more closed to prevent water leakage.

[0036] like Figures 2 to 4 As shown, the housing 1 also includes a hollow screw 16; connecting holes are opened at both ends of the housing 1, preferably, the connecting holes are respectively located on the shell 13 and the cover plate 14; the hollow screw 16 is threadedly connected to the connecting hole; the test tube 2 passes through the hollow screw 16 and the connecting hole, and the test tube 2 is installed on the housing 1 through the hollow screw 16, so as to facilitate the disassembly and assembly of the test tube 2 and facilitate maintenance and installation.

[0037] like Figure 2 and Figure 3 As shown, the housing 1 also includes a second sealing ring 17; the connecting hole includes a through hole 18 and a threaded hole 19; the through hole 18 is located between the interior of the housing 1 and the threaded hole 19; the center of the housing 1, the through hole 18 and the center of the threaded hole 19 are on the same straight line; the through hole 18 is connected to the threaded hole 19 and the interior of the housing 1; the diameter of the through hole 18 is smaller than the diameter of the threaded hole 19; the hollow screw 16 is threadedly connected to the threaded hole 19; the second sealing ring 17 is located between the through hole 18 and the hollow screw 16, and the second sealing ring 17 can be an oil-sealed rubber ring, and the connection between the test tube 2 and the housing 13 and the cover plate 14 is more sealed through the second sealing ring 17 to prevent water leakage.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat exchange device for a sediment measuring instrument, a test tube (2), It is characterized in that include: The outer shell (1) has a water inlet (11) and a water outlet (12) formed on the sides of both ends; the water inlet (11) and the water outlet (12) are both connected to the inner cavity of the outer shell (1); one end of the test tube (2) extends into the interior of the outer shell (1) and continues to extend through the outer shell (1); A guide piece (3) is fixedly arranged on the outer wall of the test tube (2) located on the outer shell (1).

2. The heat exchange device for the sediment measuring instrument according to claim 1, It is characterized in that The guide vane (3) is a corrugated structure; a gap is left between the guide vane (3) and the inner wall of the outer shell (1).

3. The heat exchange device for the sediment measuring instrument according to claim 1, It is characterized in that The guide vane (3) is made of phosphor bronze.

4. The heat exchange device for a sediment measuring instrument according to claim 1, It is characterized in that The test tube (2) is arranged in a straight line on the inner part of the housing (1).

5. The heat exchange device for the sediment measuring instrument according to claim 4, It is characterized in that The housing (1) comprises a shell (13) and a cover plate (14); one end of the shell (13) is an open end; the cover plate (14) is detachably connected to the open end of the shell (13); and the test tube (2) passes through the shell (13) and the cover plate (14).

6. The heat exchange device for the sediment measuring instrument according to claim 5, It is characterized in that The water inlet (11) and the water outlet (12) are distributed on the shell (13).

7. The heat exchange device for the sediment measuring instrument according to claim 5, It is characterized in that The housing (1) further comprises a first sealing ring (15); the first sealing ring (15) is arranged at the connection between the housing (13) and the cover plate (14).

8. The heat exchange device for a sediment measuring instrument according to claim 4, It is characterized in that The housing (1) further comprises a hollow screw (16); connecting holes are provided at both ends of the housing (1); the hollow screw (16) is threadedly connected to the connecting hole; and the test tube (2) passes through the hollow screw (16) and the connecting hole.

9. The heat exchange device for a sediment measuring instrument according to claim 8, It is characterized in that The housing (1) further comprises a second sealing ring (17); the connecting hole comprises a through hole (18) and a threaded hole (19); the through hole (18) is located between the interior of the housing (1) and the threaded hole (19); the centers of the through hole (18) and the threaded hole (19) are on the same straight line; the through hole (18) is connected to the threaded hole (19) and the interior of the housing (1); the diameter of the through hole (18) is smaller than the diameter of the threaded hole (19); the hollow screw (16) is threadedly connected to the threaded hole (19); and the second sealing ring (17) is located between the through hole (18) and the hollow screw (16).

10. The heat exchange device for a sediment measuring instrument according to any one of claims 1 to 9, It is characterized in that The housing (1) is made of phosphor bronze.

Images