A converter valve assembly loss measurement device

Abstract

The application provides a converter valve assembly loss measuring device, belonging to the field of electrical performance testing devices. The measuring device comprises a box body, the box body has a setting space for setting a converter valve assembly, the box body is connected with an air inlet duct and an air outlet duct, and a fan is installed on the air inlet duct or the air outlet duct; the converter valve assembly loss measuring device further comprises an air inlet temperature sensor for detecting the temperature of air entering the box body, an air outlet temperature sensor is installed in the air outlet duct, and an air volume tester is further installed in the air inlet duct or the air outlet duct to calculate the heat dissipated by the converter valve assembly through air. The loss of the converter valve assembly is transferred to the air in the setting space in the form of heat, then the air in the box body flows rapidly in a given direction, and the energy lost by the converter valve is taken away in the form of heat as soon as possible, finally, the temperature and the flow rate of the inlet and the outlet are measured respectively, and the heat dissipated by the converter valve assembly through air can be calculated through a formula.

Description

Technical Field

[0001] This invention relates to a device for measuring the loss of a converter valve assembly, belonging to the field of electrical performance testing devices. Background Technology

[0002] In long-distance and ultra-long-distance power transmission, direct current (DC) transmission is widely used due to its advantages such as no inductive reactance, no capacitive reactance, and no synchronization issues. As a core component of DC transmission projects, the converter valve generates significant losses during AC-DC conversion. These losses are dissipated as heat. Therefore, loss analysis of the converter valve directly impacts its heat exchange efficiency design, radiator selection, component selection, valve cooling system design, and HVAC system design. Consequently, converter valve loss analysis is a crucial aspect of converter valve design.

[0003] Currently, in addition to theoretical calculations based on the methods in IEC 61803:2011 and IEC 62751:2014, a measurement method using calorimetry has also emerged for calculating the losses of converter valves. Calorimetry utilizes the water-cooled radiator inherent inside the converter valve, measuring the inlet and outlet water temperatures and flow rates of the radiator. By calculating the heat dissipated by the converter valve through the cooling water, the heat loss of the converter valve can be determined.

[0004] However, in addition to heat exchange with the water-cooled radiator, the converter valve also exchanges heat with the air. Current technology only measures the heat loss through the water-cooled radiator and does not measure the heat loss through the air. Therefore, the actual measured data are all too small. In other words, in the current technology, the converter valve exchanges heat with both liquid and gas as heat-conducting media, but the measurement only detects the heat exchange of the liquid and lacks the heat exchange of the other heat-conducting medium, air, which makes the measurement inaccurate. At present, there is a lack of a measuring device that can measure the heat loss of the converter valve assembly through the air. Summary of the Invention

[0005] The purpose of this invention is to provide a device for measuring the loss of a converter valve assembly. This addresses the problem in the prior art that cannot measure the heat lost by the converter valve assembly through the air.

[0006] To achieve the above objectives, the high-voltage DC converter valve assembly loss measurement device of the present invention adopts the following technical solution:

[0007] A converter valve assembly loss measuring device includes a housing with a space for mounting the converter valve assembly. An inlet duct and an outlet duct are connected to the housing. A fan is installed on either the inlet or outlet duct to deliver outside air into the space, thereby transferring the losses of the converter valve assembly to the air as heat, which is then discharged from the housing through the outlet duct. The device also includes an inlet temperature sensor for detecting the temperature of the air entering the housing, an outlet temperature sensor installed in the outlet duct, and an airflow meter installed in either the inlet or outlet duct to calculate the heat dissipated by the converter valve assembly through the air.

[0008] The beneficial effects of the above technical solution are as follows: the enclosure has a space for installation, facilitating the placement of the converter valve assembly within the enclosure and providing insulation from the outside; the enclosure is connected to an inlet air duct and an outlet air duct, with a fan installed on either the inlet or outlet air duct to allow outside air to be transported to the space through the inlet air duct, thereby transferring the losses of the converter valve assembly to the air in the form of heat, which is then discharged from the enclosure through the outlet air duct; the design of the fan and air duct facilitates rapid airflow within the enclosure in a predetermined direction, thus quickly carrying away the energy lost by the converter valve in the form of heat; furthermore, the converter valve assembly loss measuring device includes an inlet air temperature sensor for detecting the temperature of the air entering the enclosure, an outlet air temperature sensor installed in the outlet air duct, and an airflow meter installed in either the inlet or outlet air duct. By measuring the temperature and flow rate of the inlet and outlet air respectively, the heat lost by the converter valve assembly through the air can be calculated using readily available formulas.

[0009] Furthermore, the air outlet duct includes an air outlet evacuation section located at the top of the housing, and multiple air outlet evacuation holes are arranged on the lower side of the air outlet evacuation section.

[0010] The beneficial effects of the above technical solution are as follows: multiple air outlet evacuation holes are provided on the lower side of the air outlet evacuation section near the converter valve assembly, which can quickly collect the air in the installation space and facilitate the rapid removal of the heat generated by the converter valve assembly.

[0011] Furthermore, the air outlet duct also includes an air outlet guide section located outside the housing, and the air outlet duct also includes an air outlet mixing section located between the air outlet evacuation section and the air outlet guide section, and the air outlet temperature sensor is installed inside the air outlet guide section.

[0012] The beneficial effects of the above technical solution are as follows: the electronic components in different parts of the converter valve assembly generate different amounts of heat, and there may be a temperature difference in the airflow entering the air outlet evacuation hole. The air outlet mixing section can fully mix the collected air, and the air temperature sensor then measures the air that has already been mixed, avoiding air temperature fluctuations and making the measurement results more accurate.

[0013] Furthermore, the air mixing section is U-shaped so that the air evacuation section and the air guiding section are arranged in parallel and the air directions within them are opposite.

[0014] The advantages of the above technical solution are: it is convenient to arrange and the airflow direction in the air outlet duct can be adjusted by 180°, resulting in better mixing effect.

[0015] Furthermore, the air volume tester is installed within the air outlet guide section.

[0016] The advantages of the above technical solution are that the air outlet guide section is set outside the box, and the installation and arrangement of the air volume tester is relatively simple.

[0017] Furthermore, the fan is located at the outlet of the air duct.

[0018] The advantages of the above technical solution are: the fan is arranged at the outlet, which facilitates the rapid collection and discharge of air in the space; and the fan power can be adjusted according to the temperature in the air outlet duct to control the working environment temperature of the converter valve assembly.

[0019] Furthermore, the air inlet duct includes an air inlet evacuation section located at the bottom of the housing, and the upper side of the air inlet evacuation section is provided with a plurality of air inlet evacuation holes, and the air inlet evacuation section is located below the air outlet evacuation section.

[0020] The beneficial effects of the above technical solution are as follows: an air inlet evacuation hole is provided on the upper side of the air outlet evacuation section near the converter valve assembly, so that air can be directly blown to the converter valve assembly; and because the heat generated by the converter valve assembly is dissipated upward, the heated air is more likely to move towards the air outlet duct.

[0021] Furthermore, the air inlet duct also includes an air inlet guide section arranged perpendicular to the bottom surface of the housing, and the air inlet temperature sensor is installed in the air inlet guide section.

[0022] The beneficial effect of the above technical solution is that setting up an air inlet guide section provides more installation positions for the air inlet temperature sensor.

[0023] Furthermore, the air inlet duct is arranged in an L-shape, and the inlet of the air inlet duct is located at the top of the housing.

[0024] The advantages of the above technical solution are: the air inlet is set at a high position, which saves space on the side wall of the box and facilitates the arrangement of other components. In addition, the inlet position is far away from the ground, which avoids the air inlet from sucking in more ground dust.

[0025] Furthermore, the converter valve assembly loss measuring device also includes an inlet pipe and an outlet pipe. The inlet pipe is used to connect to the inlet of the converter valve assembly's own water-cooled radiator, and the outlet pipe is used to connect to the outlet of the converter valve assembly's own water-cooled radiator. An inlet water temperature sensor is installed in the inlet pipe, and an outlet water temperature sensor is installed in the outlet pipe. A water flow meter is installed in either the inlet or outlet pipe.

[0026] The beneficial effects of the above technical solution are as follows: by utilizing the structure of the converter valve assembly itself, the structure is simple and forms another set of heat dissipation channels. The heat absorbed by the air heat dissipation channel and the water heat dissipation channel are calculated separately. The sum of the heat absorbed by the two channels is the heat dissipation of the converter valve assembly, which makes the measurement results more accurate. Attached Figure Description

[0027] Figure 1 This is a perspective view of Embodiment 1 of the converter valve assembly loss measurement device in this invention;

[0028] Figure 2 for Figure 1 A perspective view of the converter valve assembly loss measurement device shown from another angle.

[0029] Figure 3 for Figure 1 The diagram shows the internal structure of the converter valve assembly loss measurement device.

[0030] In the diagram: 1. Housing; 11. Door; 12. Connecting copper busbar; 13. Insulating sleeve; 12. Gas heat exchange chamber; 21. Air inlet duct; 211. Air inlet guide section; 212. Air inlet evacuation section; 213. Air inlet evacuation hole; 214. Air inlet temperature sensor; 22. Air outlet duct; 221. Air outlet evacuation section; 222. Air outlet evacuation hole; 223. Air outlet bend; 224. Air outlet guide section; 225. Air outlet temperature sensor; 23. Fan; 24. Air volume tester; 31. Water inlet pipe; 311. Water inlet temperature sensor; 32. Water outlet pipe; 321. Water outlet temperature sensor; 33. Water volume tester; 4. Converter valve assembly; 5. Electrical control box; 6. Casters. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0035] An embodiment of the converter valve assembly loss measuring device (hereinafter referred to as the measuring device) of the present invention:

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the testing device includes a housing 1, with a door 11 on one side. The interior of the housing 1 forms a space for mounting the converter valve assembly 4; specifically, in this embodiment, the space is a gas heat exchange chamber 12. An inlet air duct 21 and an outlet air duct 22 are connected to the housing, and an inlet water pipe 31 and an outlet water pipe 32 are provided on the exterior of the housing for fixed connection to the water-cooled radiator of the converter valve assembly 4 itself.

[0037] like Figure 3 As shown, the air inlet duct 21 includes a vertically arranged air inlet guide section 211 and a horizontally arranged air inlet evacuation section 212 connected in sequence, both arranged in an L-shape inside the housing. The inlet of the air inlet guide section 211 is located at the upper part of the housing 1, and the air inlet evacuation section 212 is located at the bottom of the housing 1. Multiple rows of air inlet evacuation holes 213 are provided on the upper side of the air inlet evacuation section 212 to introduce outside air from the air inlet duct 21 into the gas heat exchange chamber 12. An air inlet temperature sensor 214 is installed inside the air inlet guide section 211 to measure the air inlet temperature.

[0038] The air outlet duct 22 includes an air outlet evacuation section 221 located at the top of the housing 1 and an air outlet guide section 224 located outside the housing 1. The air outlet evacuation section 221 is located above the converter valve assembly 4, and multiple air outlet evacuation holes 222 are opened on the lower side of the air outlet evacuation section 221. The air blown upward from the air inlet evacuation section 212 can pass through the converter valve assembly 4 and be directly blown into the air outlet evacuation holes 222, which facilitates the collection and discharge of hot air. An air outlet is provided on the housing 1 corresponding to the air outlet duct 22. The outlet of the air evacuation section 221 and the inlet of the air guide section 224 are fixed on the housing 1 at the corresponding air outlets, thus connecting the air evacuation section 221 and the air guide section 224. The outlet end of the air evacuation section 221 and the inlet end of the air guide section 224 together form a U-shaped air outlet bend 223, ensuring uniform mixing of the air coming out of the converter valve assembly. In other words, one end of the air outlet bend 223 is located inside the housing and connected to the air evacuation section 221, while the other end is located outside the housing and connected to the air guide section 224. An air outlet temperature sensor 225 and an airflow meter 24 are installed inside the air guide section 224 to measure the air outlet temperature and airflow, respectively. A fan 23 is installed at the outlet of the air guide section 224.

[0039] The measuring device in this invention operates as follows:

[0040] Under the action of the fan 23, air flows sequentially through the inlet duct 21, the gas heat exchange chamber 12, and the outlet duct 22. After the air temperature is measured by the inlet temperature sensor 214, it flows into the inlet evacuation section 212, and then enters the gas heat exchange chamber 12 through the inlet evacuation holes 213 on the upper side of the inlet evacuation section 212 to cool the converter valve assembly 4. Because the inlet evacuation holes 213 have a large distribution area and are directly facing the converter valve assembly 4, the air flowing out of the inlet duct 21 can better cool the converter valve assembly 4. Then the hot air rises and enters the outlet duct 22 through the outlet evacuation holes 222, and then passes through the outlet bend 223 to mix the airflows of different temperatures heated by different components evenly. Therefore, the outlet temperature sensor 225 located behind the outlet bend 223 can measure a relatively accurate value. When the measurement system reaches thermal equilibrium, the inlet temperature t measured by the inlet temperature sensor 214 is recorded. in The outlet air temperature t measured by the outlet air temperature sensor 225 out The airflow q measured by the airflow meter 24 can be used to calculate the heat dissipated by the converter valve assembly through the air, for example, using the following formula:

[0041] p = c × ρ² × q × (t) out -t in );

[0042] in:

[0043] p - Heat dissipated by the converter valve assembly through the air, W;

[0044] q - air volume, m 3 / s;

[0045] c - Specific heat capacity of air, 1005 J / (kg·K) (30℃);

[0046] ρ² - air density, 1.165 kg / m³ 3 (30℃);

[0047] t out -Outlet air temperature, °C;

[0048] t in -Inlet air temperature, °C;

[0049] Furthermore, such as Figure 2 As shown, the testing device also has an inlet pipe 31 and an outlet pipe 32 for fixed connection with the water-cooled radiator of the converter valve assembly 4 itself. The inlet pipe 31 is connected to the water inlet of the water-cooled radiator, and an inlet water temperature sensor 311 is installed inside the inlet pipe 31; the outlet pipe 32 is connected to the water outlet of the water-cooled radiator, and an outlet water temperature sensor 321 and a water flow meter 33 are installed inside the outlet pipe 32.

[0050] The inlet water temperature T in the inlet pipe 31 and outlet water temperature sensor 321 can be measured respectively using the inlet water temperature sensor 311 and the outlet water temperature sensor 321. in and outlet water temperature T out Then, the inlet water flow rate Q for cooling the converter valve assembly 4 per unit time is measured using the water flow meter 33. The heat lost by the converter valve assembly 4 through the cooling water can then be calculated, for example, using the following formula:

[0051] P=C×ρ1×Q×(T out -T in );

[0052] in:

[0053] P - Heat dissipated by cooling water through the converter valve assembly, W;

[0054] Q - Inlet water flow rate, L / s;

[0055] C - Inlet water specific heat capacity, 4174 J / (kg·K) (40℃);

[0056] ρ1 - Cooling water density, 9.922 kg / L (40℃);

[0057] T out -Outlet water temperature, °C;

[0058] T in-Inlet water temperature, °C;

[0059] At this time, the heat loss of the converter valve assembly is: P t =P+p.

[0060] Furthermore, from Figure 2 and Figure 3 It can be seen that the testing device also includes an electrical control box 5 and casters 6. The electrical control box 5 is equipped with an automatic control program that can automatically record the inlet air temperature t. in Air outlet temperature t out Air intake volume q, water intake temperature T in Outlet water temperature T out The system automatically calculates the heat loss of the converter valve assembly 4 per unit time based on the inlet water flow rate Q. Casters 6 are located at the bottom of the housing 1, supporting the housing 1 and moving it via sliding. The housing 1 also has a connecting copper busbar 12 passing through it for electrical connection to an external power source, and an insulating sleeve 13 fitted over the connecting copper busbar 12 and fixedly connected to the housing 1. When measurement is required, the converter valve assembly 4 can be directly connected to the connecting copper busbar 12 to connect it to an external power source.

[0061] In other embodiments of the converter valve assembly loss measurement device: no outlet pipe and inlet pipe are provided. In this case, only the heat loss of the converter valve assembly through air can be measured. In this case, the outlet water temperature sensor and inlet water temperature sensor are directly installed in the converter valve assembly's own water-cooled radiator.

[0062] In other embodiments of the converter valve assembly loss measurement device: the air inlet duct is not arranged in an L-shape, and the air inlet evacuation section and the air inlet guide section are connected by a pipe, which is in the shape of a broken line.

[0063] In other embodiments of the converter valve assembly loss measurement device: there is no air inlet guide section, only an air inlet evacuation section, in which case the air inlet duct is in the shape of "I", and the inlet of the air inlet duct is located at the bottom of the box.

[0064] In other embodiments of the converter valve assembly loss measurement device: an inlet air temperature sensor is installed on the inlet evacuation section to measure the air temperature within the inlet evacuation section.

[0065] In other embodiments of the converter valve assembly loss measurement device: the inlet air temperature sensor is not placed inside the inlet air duct, but is placed on the surface of the housing to measure the temperature of the air on the surface of the housing. The inlet air duct directly introduces ambient air into the housing, so in this case the inlet air temperature is the ambient air temperature.

[0066] In other embodiments of the converter valve assembly loss measurement device: other configuration of the air inlet evacuation hole + the air inlet evacuation section is arranged on the left side of the housing, and the air inlet evacuation hole is provided on the right side of the air inlet evacuation section. After the air inlet evacuation hole introduces the outside air, it sprays it from the air inlet evacuation section to the right onto the converter valve assembly on the right side.

[0067] In other embodiments of the converter valve assembly loss measurement device: there is no air inlet evacuation section, and the air inlet duct is a short straight pipe.

[0068] In another embodiment of the converter valve assembly loss measurement device: the fan is placed at the inlet of the air intake duct.

[0069] In another embodiment of the converter valve assembly loss measurement device: a fan with the same flow direction is installed at both the inlet of the air inlet duct and the outlet of the air outlet duct.

[0070] In another embodiment of the converter valve assembly loss measurement device: the air volume tester is placed inside the air inlet duct.

[0071] In other embodiments of the converter valve assembly loss measurement device: the outlet air mixing section is an L-shaped bend, in which the outlet air evacuation section and the outlet air guide section are vertically connected together.

[0072] In other embodiments of the converter valve assembly loss measurement device: the outlet air mixing section is a separately set component, which can be a U-shaped pipe or an L-shaped pipe, with its two ends connected to the outlet air evacuation section and the outlet air guiding section, respectively.

[0073] In other embodiments of the converter valve assembly loss measurement device: the outlet air mixing section is a component composed of staggered fins, which can be directly set at the outlet end of the outlet air evacuation section or the inlet end of the outlet air guiding section, and the outlet air temperature sensor is set after the fins.

[0074] In other embodiments of the converter valve assembly loss measurement device: no air outlet evacuation hole is provided, and the air outlet evacuation section is a pipe with one end open, the opening being directed toward the converter valve assembly.

[0075] In other embodiments of the converter valve assembly loss measurement device: no air outlet evacuation section is provided, and the inlet section of the air outlet guide section is directly connected to the box opening and communicates with the setting space inside the box.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A device for measuring the loss of a converter valve assembly, characterized in that, The device includes a housing (1), which has a space for installing a converter valve assembly (4). An air inlet duct (21) and an air outlet duct (22) are connected to the housing (1). A fan (23) is installed on the air outlet duct (22) to allow outside air to be transported to the space through the air inlet duct (21), thereby transferring the loss of the converter valve assembly (4) to the air in the form of heat, and finally exhausting it out of the housing (1) through the air outlet duct (22). The converter valve assembly loss measuring device also includes an air inlet temperature sensor (214) for detecting the temperature of the air entering the housing (1). The air outlet duct includes a fan (23) located at the top of the housing. The air outlet evacuation section, the air outlet guide section located outside the box, and the air outlet mixing section located between the air outlet evacuation section and the air outlet guide section and in a U-shape are provided. The air outlet evacuation section and the air outlet guide section are parallel and the air directions within them are opposite. Multiple air outlet evacuation holes are arranged on the lower side of the air outlet evacuation section. An air outlet temperature sensor (225) is installed in the air outlet guide section. An air volume tester (24) is also installed in the air outlet duct (22) to calculate the heat dissipated by the converter valve assembly (4) through the air. The air inlet duct includes an air inlet evacuation section located at the bottom of the box. Multiple air inlet evacuation holes are provided on the upper side of the air inlet evacuation section. The air inlet evacuation section is located below the air outlet evacuation section.

2. The converter valve assembly loss measuring device according to claim 1, characterized in that: The air volume tester (24) is installed in the air outlet guide section (224).

3. The converter valve assembly loss measuring device according to claim 1, characterized in that: The fan (23) is located at the outlet of the air duct (22).

4. The converter valve assembly loss measuring device according to claim 1, characterized in that: The air inlet duct (21) also includes an air inlet guide section (211) arranged perpendicular to the bottom surface of the box (1), and the air inlet temperature sensor (214) is installed in the air inlet guide section (211).

5. The converter valve assembly loss measuring device according to claim 4, characterized in that: The air intake guide section (211) and the air intake evacuation section (212) are arranged in an L-shape inside the box, and the inlet of the air intake duct (21) is located at the upper part of the box (1).

6. The converter valve assembly loss measuring device according to claim 1, characterized in that, The loss measurement device for the converter valve assembly (4) also includes an inlet pipe (31) and an outlet pipe (32). The inlet pipe (31) is used to connect to the inlet of the water-cooled radiator of the converter valve assembly (4) itself, and the outlet pipe (32) is used to connect to the outlet of the water-cooled radiator of the converter valve assembly (4) itself. An inlet water temperature sensor (311) is installed in the inlet pipe (31); an outlet water temperature sensor (321) is installed in the outlet pipe (32); and a water flow meter (33) is installed in the inlet pipe (31) or the outlet pipe (32).

7. A device for measuring the loss of a converter valve assembly, characterized in that, The device includes a housing (1), which has a space for installing a converter valve assembly (4). An air inlet duct (21) and an air outlet duct (22) are connected to the housing (1). A fan (23) is installed on the air outlet duct (22) to allow outside air to be transported to the space through the air inlet duct (21), thereby transferring the loss of the converter valve assembly (4) to the air in the form of heat, and finally exhausting it out of the housing (1) through the air outlet duct (22). The converter valve assembly loss measuring device also includes an air inlet temperature sensor (214) for detecting the temperature of the air entering the housing (1). The air outlet duct includes a fan (23) located at the top of the housing. The air outlet evacuation section, the air outlet guide section located outside the box, and the air outlet mixing section located between the air outlet evacuation section and the air outlet guide section and in a U-shape are provided. The air outlet evacuation section and the air outlet guide section are parallel and the air directions within them are opposite. Multiple air outlet evacuation holes are arranged on the lower side of the air outlet evacuation section. An air outlet temperature sensor (225) is installed in the air outlet guide section. An air volume tester (24) is also installed in the air inlet duct (21) to calculate the heat dissipated by the converter valve assembly (4) through the air. The air inlet duct includes an air inlet evacuation section located at the bottom of the box. Multiple air inlet evacuation holes are provided on the upper side of the air inlet evacuation section. The air inlet evacuation section is located below the air outlet evacuation section.

8. The converter valve assembly loss measuring device according to claim 7, characterized in that: The fan (23) is located at the outlet of the air duct (22).

9. The converter valve assembly loss measuring device according to claim 7, characterized in that: The air inlet duct (21) also includes an air inlet guide section (211) arranged perpendicular to the bottom surface of the box (1), and the air inlet temperature sensor (214) is installed in the air inlet guide section (211).

10. The converter valve assembly loss measuring device according to claim 9, characterized in that: The air intake guide section (211) and the air intake evacuation section (212) are arranged in an L-shape inside the box, and the inlet of the air intake duct (21) is located at the upper part of the box (1).

11. The converter valve assembly loss measuring device according to claim 7, characterized in that: The loss measurement device for the converter valve assembly (4) also includes an inlet pipe (31) and an outlet pipe (32). The inlet pipe (31) is used to connect to the inlet of the water-cooled radiator of the converter valve assembly (4) itself, and the outlet pipe (32) is used to connect to the outlet of the water-cooled radiator of the converter valve assembly (4) itself. An inlet water temperature sensor (311) is installed in the inlet pipe (31); an outlet water temperature sensor (321) is installed in the outlet pipe (32); and a water flow meter (33) is installed in the inlet pipe (31) or the outlet pipe (32).

12. A device for measuring the loss of a converter valve assembly, characterized in that, The device includes a housing (1) with a space for mounting a converter valve assembly (4). An air inlet duct (21) and an air outlet duct (22) are connected to the housing (1). A fan (23) is installed on the air inlet duct (21) to deliver outside air into the space, thereby transferring the losses of the converter valve assembly (4) to the air in the form of heat, which is then discharged from the housing (1) through the air outlet duct (22). The converter valve assembly loss measuring device also includes an air inlet temperature sensor (214) for detecting the temperature of the air entering the housing (1). The air outlet duct includes a space located at the top of the housing. The air outlet evacuation section, the air outlet guide section located outside the box, and the air outlet mixing section located between the air outlet evacuation section and the air outlet guide section and in a U-shape are provided. The air outlet evacuation section and the air outlet guide section are parallel and the air directions within them are opposite. Multiple air outlet evacuation holes are arranged on the lower side of the air outlet evacuation section. An air outlet temperature sensor (225) is installed in the air outlet guide section. An air volume tester (24) is also installed in the air inlet duct (21) to calculate the heat dissipated by the converter valve assembly (4) through the air. The air inlet duct includes an air inlet evacuation section located at the bottom of the box. Multiple air inlet evacuation holes are provided on the upper side of the air inlet evacuation section. The air inlet evacuation section is located below the air outlet evacuation section.

13. The converter valve assembly loss measuring device according to claim 12, characterized in that: The air inlet duct (21) also includes an air inlet guide section (211) arranged perpendicular to the bottom surface of the box (1), and the air inlet temperature sensor (214) is installed in the air inlet guide section (211).

14. The converter valve assembly loss measuring device according to claim 13, characterized in that: The air intake guide section (211) and the air intake evacuation section (212) are arranged in an L-shape inside the box, and the inlet of the air intake duct (21) is located at the upper part of the box (1).

15. The converter valve assembly loss measuring device according to claim 12, characterized in that: The loss measurement device for the converter valve assembly (4) also includes an inlet pipe (31) and an outlet pipe (32). The inlet pipe (31) is used to connect to the inlet of the water-cooled radiator of the converter valve assembly (4) itself, and the outlet pipe (32) is used to connect to the outlet of the water-cooled radiator of the converter valve assembly (4) itself. An inlet water temperature sensor (311) is installed in the inlet pipe (31); an outlet water temperature sensor (321) is installed in the outlet pipe (32); and a water flow meter (33) is installed in the inlet pipe (31) or the outlet pipe (32).

16. A device for measuring the loss of a converter valve assembly, characterized in that, The device includes a housing (1) with a space for mounting a converter valve assembly (4). An air inlet duct (21) and an air outlet duct (22) are connected to the housing (1). A fan (23) is installed on the air inlet duct (21) to deliver outside air into the space, thereby transferring the losses of the converter valve assembly (4) to the air in the form of heat, which is then discharged from the housing (1) through the air outlet duct (22). The converter valve assembly loss measuring device also includes an air inlet temperature sensor (214) for detecting the temperature of the air entering the housing (1). The air outlet duct includes a space located at the top of the housing. The air outlet evacuation section, the air outlet guide section located outside the box, and the air outlet mixing section located between the air outlet evacuation section and the air outlet guide section and in a U-shape are provided. The air outlet evacuation section and the air outlet guide section are parallel and the air directions within them are opposite. Multiple air outlet evacuation holes are arranged on the lower side of the air outlet evacuation section. An air outlet temperature sensor (225) is installed in the air outlet guide section. An air volume tester (24) is also installed in the air outlet duct (22) to calculate the heat dissipated by the converter valve assembly (4) through the air. The air inlet duct includes an air inlet evacuation section located at the bottom of the box. Multiple air inlet evacuation holes are provided on the upper side of the air inlet evacuation section. The air inlet evacuation section is located below the air outlet evacuation section.

17. The converter valve assembly loss measuring device according to claim 16, characterized in that: The air volume tester (24) is installed in the air outlet guide section (224).

18. The converter valve assembly loss measuring device according to claim 16, characterized in that: The air inlet duct (21) also includes an air inlet guide section (211) arranged perpendicular to the bottom surface of the box (1), and the air inlet temperature sensor (214) is installed in the air inlet guide section (211).

19. The converter valve assembly loss measuring device according to claim 18, characterized in that: The air intake guide section (211) and the air intake evacuation section (212) are arranged in an L-shape inside the box, and the inlet of the air intake duct (21) is located at the upper part of the box (1).

20. The converter valve assembly loss measuring device according to claim 16, characterized in that: The loss measurement device for the converter valve assembly (4) also includes an inlet pipe (31) and an outlet pipe (32). The inlet pipe (31) is used to connect to the inlet of the water-cooled radiator of the converter valve assembly (4) itself, and the outlet pipe (32) is used to connect to the outlet of the water-cooled radiator of the converter valve assembly (4) itself. An inlet water temperature sensor (311) is installed in the inlet pipe (31); an outlet water temperature sensor (321) is installed in the outlet pipe (32); and a water flow meter (33) is installed in the inlet pipe (31) or the outlet pipe (32).

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