Shell welding piece jet flow grouping isolation flow guiding and stabilizing collecting device and method

Abstract

The application relates to the field of liquid flow test of an engine, and particularly discloses a shell welding piece jet flow grouping isolation flow guiding and stabilizing collecting device, which comprises a plugging assembly arranged at an upper end outlet of a shell welding piece and used for sealing between two ends of the upper end outlet, so that the uplink cavity outlet and the downlink cavity outlet of the upper end port are plugged between the two ends of the upper end port; and a water collecting assembly arranged at a lower end of the shell welding piece and used for dividing the jet flow of a cooling ring into multiple groups. The plugging assembly plugs the upper end outlet, so that the water entering the shell welding piece can only flow out from the cooling ring through the cooling cavity; the water collecting assembly uniformly combines the multiple jet flows into a group, collects and stabilizes each group of jet flows, and makes the combined jet flow slowly and uniformly flow out, so that the outlet is free of scattering and is convenient for collection.

Description

Technical Field

[0001] This application relates to the technical field of fluid flow testing for needle-type engines, and in particular to a device and method for grouping, isolating, guiding, stabilizing, and collecting jets from welded casing components. Background Technology

[0002] In the development of variable thrust engines, the uniformity of the coolant jet in the injector is crucial to whether the thrust chamber is cooled evenly and can withstand the high temperatures of combustion without burning. Accurate measurement results of coolant uniformity must be obtained through fluid flow tests.

[0003] A qualified cooling ring is welded to the lower end of the injector housing to form a housing welded component. A cooling chamber is provided inside the injector housing. Multiple evenly distributed tangential holes are opened on the cooling ring. The cooling chamber of the injector housing is provided with an inlet for water to enter. There are upper and lower chambers at the upper outlet position of the injector housing. Water enters from the inlet, passes through the cooling chamber, and is sprayed out from the tangential holes to form a jet. At the same time, water can flow out from the upper and lower chambers after passing through the cooling chamber.

[0004] In related technologies, the uniformity of the jet flow is usually tested only on the cooling ring, without testing the uniformity of the welded parts of the housing. However, in order to ensure that the jet flow uniformity still meets the requirements after the cooling ring is welded to the injector housing, it is necessary to observe and accurately measure the jet flow uniformity of the welded parts of the housing. Summary of the Invention

[0005] The technical problem solved by this invention is to overcome the shortcomings of the prior art. This application discloses a jet grouping isolation, guiding and stabilizing collection device for shell welded parts, which solves the problem of simultaneous collection and measurement of multiple jets grouped and isolated from the shell welded parts.

[0006] This application solves the sealing challenges between jets in the welded shell components, between the welded shell components and device assemblies, and between assemblies through structural design, selection of suitable sealing materials, and precise calculation of key dimensions. It also solves the problem of isolating multiple jets from the welded shell components into multiple groups, each of which can be collected simultaneously, enabling precise measurement of the jet uniformity in the welded shell components.

[0007] The technical solution of this invention is:

[0008] A jet grouping, isolation, diversion, stabilization, and collection device for a welded shell component includes:

[0009] A sealing assembly is installed at the upper outlet of the housing welded part to seal the two ends of the upper outlet, thereby sealing the upper and lower cavity outlets of the upper port between the two ends of the upper port.

[0010] The water collection assembly is located at the lower end of the welded part of the shell. It divides the jet of the cooling ring into multiple groups of isolation plates and collects and stabilizes the flow of each group of jets.

[0011] The sealing assembly includes a top cover and a fastening seal that abut against both ends of the upper outlet, with the top cover and the fastening seal being threaded together.

[0012] A sealing ring is provided on the side of the top cover that contacts the upper outlet and on the side of the fastening seal that contacts the upper outlet.

[0013] The top cover and the upper outlet are provided with fastening bolts for connecting the top cover and the upper outlet.

[0014] The isolation plate assembly is connected to the lower end of the welded shell component. The isolation plate assembly is provided with isolation holes, which are evenly distributed around the axis of the isolation plate. Each isolation hole is opposite to at least two tangential holes of the cooling ring.

[0015] The isolation plate assembly includes a first sealing gasket and an isolation fixing plate. An isolation hole is disposed on the isolation fixing plate. The first sealing gasket is disposed between the isolation fixing plate and the lower end of the housing welded part. The first sealing gasket has a first through hole that is one-to-one with the isolation hole.

[0016] The first sealing gasket is a flexible gasket; the first through hole covers two adjacent tangential holes on the cooling ring, and the first sealing gasket cannot block the tangential holes when squeezed.

[0017] The water collection plate assembly includes a water collection orifice plate and a water collection and flow stabilizing pipe connected to the water collection orifice plate. The water collection orifice plate is located on the side of the isolation fixing plate away from the cooling ring. The water collection orifice plate is provided with water passage holes, which are evenly distributed around the axis of the water collection orifice plate. The isolation holes are opposite to and connected to the water passage holes. The axis of the water passage holes is located on the side of the isolation hole axis away from the axis of the shell welded parts. The water collection and flow stabilizing pipe is connected to the water passage holes.

[0018] A second sealing gasket is provided between the isolation fixing plate and the water collection hole plate; a step is provided on the side of the water collection hole plate facing the isolation fixing plate, and the second sealing gasket is located in the step.

[0019] The isolation fixing plate has multiple first mounting holes, which are arranged in a ring around the axis of the isolation fixing plate. The isolation fixing plate is mechanically connected to the lower end of the shell welding component through the first mounting holes.

[0020] The isolation fixing plate and the water collection hole plate are connected by multiple first connectors and multiple second connectors. The multiple first connectors are located between the circumference of the isolation hole and the circumference of the first mounting hole, and the second connectors are located within the circumference of the isolation hole.

[0021] A method of using a jet grouping, isolation, diversion, stabilization, and collection device for a welded casing includes,

[0022] Install the sealing assembly to seal the outlet of the upper and lower chambers in the middle of the upper outlet;

[0023] Install a water collection component that can evenly divide the jet of the cooling ring into multiple streams. The shell welded parts are fixed to the test bench, and a non-uniformity coefficient measuring device is placed below the water collection component.

[0024] The jet grouping, isolation, guiding, stabilizing, and collecting device for the welded shell components comprises an isolation fixing plate, a water collection orifice plate, a first sealing gasket, a second sealing gasket, a top cover, fastening seals, a pressure measuring assembly, an inlet assembly, and fasteners. The isolation fixing plate divides the jets into multiple groups, supporting and fixing the welded shell components and the first sealing gasket, and positioning and fixing the water collection orifice plate and the second sealing component. The first sealing gasket solves the sealing problems between its isolation holes, between the welded shell components and the isolation fixing plate, and between the first sealing gasket and the isolation fixing plate. The second sealing component guides each group of jets, shifting the jets outward relative to the axis of the welded shell components, making the jets relative to the inlet of the water collection orifice plate. The water collection orifice plate collects and stabilizes the jet flow, ensuring full-pipe flow, slow and uniform jet outflow, no scattering at the outlet, and easy collection. The top cover seals the upward and downward cavities at the upper outlet of the welded shell components, and the fastening seals, in conjunction with the top cover, seal the central flow path, ensuring that water entering the welded shell components can only flow out through the cooling chamber and cooling ring.

[0025] The inlet assembly introduces water into the welded shell. A pressure probe ensures accurate pressure measurement. The welded shell, isolation plate, and water collection orifice plate are designed with the same number of through holes or threaded holes on their respective pitch circles. Fasteners secure the welded shell and the device, ensuring water flows in and out of the welded shell according to the required channels. This achieves the isolation and equal distribution of multiple jets, with each group simultaneously collected and flowing into the uniformity measurement device, thus completing the accurate measurement of jet uniformity within the welded shell.

[0026] A method of using a jet grouping, isolation, diversion, stabilization, and collection device for a welded casing includes:

[0027] Install the sealing assembly to seal the outlet of the upper and lower chambers in the middle of the upper outlet;

[0028] Install a water collection component that can evenly divide the jet of the cooling ring into multiple streams. The shell welded parts are fixed to the test bench, and a non-uniformity coefficient measuring device is placed below the water collection component.

[0029] In summary, this application includes at least the following beneficial technical effects:

[0030] (1) By setting up a sealing component, it is ensured that the water entering the welded parts of the shell can only enter the cooling channel and form a jet from the tangential hole of the cooling ring, which facilitates the detection of the jet of the welded parts of the shell. The sealing component has a simple structure and is easy to install.

[0031] (2) By setting the structure of the water collection component, the jet isolation of the shell welded parts is divided into multiple groups, and the outflowing water is collected and stabilized to ensure that the water flows out slowly and evenly without scattering, so that each group can be collected and flow into the uniformity measuring device at the same time.

[0032] (3) By setting up the isolation fixing plate, the water collection hole plate, the first sealing gasket and the second sealing element, the sealing between each part and the accurate isolation of the jet are achieved. At the same time, the water outlet of the water collection and stabilizing pipe is moved outward away from the axis of the welded parts of the shell, which is conducive to improving the measurement accuracy.

[0033] (4) The connection between the isolation fixing plate and the water collection hole plate through the first connector and the second connector ensures the stability of the seal between the isolation fixing plate and the water collection hole plate through the second sealing element. Attached Figure Description

[0034] Figure 1 The embodiments of this application refer to the shell welded component and the jet grouping, isolation, guiding, stabilizing and collecting device for the shell welded component.

[0035] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0036] Figure 3 This is a structural diagram of the isolation fixing plate.

[0037] Figure 4 This is a structural diagram of the water collection orifice plate.

[0038] Figure 5 This is a diagram showing the relative position of the first through hole of the first sealing gasket to the weld.

[0039] Figure 6 This is an assembly drawing of the top cover and fastening seals.

[0040] Explanation of reference numerals in the attached figures:

[0041] 11. Cooling ring; 12. Injector housing; 13. Cooling chamber; 14. Upper outlet; 16. Tangential hole; 17. Weld;

[0042] 21. Isolation fixing plate; 22. Isolation hole; 23. First mounting hole; 24. Second mounting hole; 25. Third mounting hole;

[0043] 31. Water collection orifice plate; 32. Water passage hole; 33. Step; 34. Fourth mounting hole; 35. Fifth mounting hole;

[0044] 41. Water collection and flow stabilization pipe;

[0045] 51. Connecting bolt; 52. First connecting piece; 53. Second connecting piece;

[0046] 61. First sealing gasket; 62. First through hole; 63. Second sealing gasket; 64. Second through hole;

[0047] 71. Top cover; 72. Fastening seal; 73. Sealing ring; 74. Fastening bolt;

[0048] 8. Non-uniformity coefficient measuring device. Detailed Implementation

[0049] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0050] like Figure 1 and Figure 3 As shown, the shell welding component of this embodiment includes: a sprayer shell 12, a cooling ring 11 welded to the lower end of the sprayer shell 12, two welds 17 formed between the bottom of the cooling ring 11 and the sprayer shell 12, a cooling cavity 13 is provided inside the sprayer shell 12, and a plurality of evenly distributed tangential holes 16 are opened on the cooling ring 11. The tangential holes 16 connect the cooling cavity 13 and the outside atmosphere. An upper and lower cavity is provided in the upper outlet 14 position of the sprayer shell 12. Water enters from the inlet, passes through the cooling cavity 13, and is sprayed out from the tangential holes 16 to form a jet. At the same time, water can flow out from the upper and lower tangential cavities after passing through the cooling cavity.

[0051] The cooling ring 11 is circular; nearly a hundred tangential holes are evenly distributed on the central segment D3 of the ring, with the diameter of each hole typically greater than 0.5 mm. This large, thin ring, inlaid and welded to the lower end of the shell, has two additional weld seams 17 on its lower end face. To accurately measure the jet uniformity during testing, the first challenge is to solve the problem of grouping and isolating the multiple tangential holes on the cooling ring 11, as well as the sealing challenges between the isolation holes 22, the shell welded components, and the collection device. All jet streams must be isolated to the number corresponding to the uniformity measurement device and collected to flow into it. The problem of fixing the shell welded components and the collection device due to the inconsistent circumferential position of the cooling ring 11 welded to the shell must also be addressed, ensuring that water flows in and out of the shell welded components according to the required channels.

[0052] This application discloses a device and method for grouping, isolating, guiding, stabilizing, and collecting jets from a welded shell component, such as... Figure 1The collection device includes a sealing assembly for sealing the two ends of the upper outlet 14, thereby blocking the upper and lower cavity outlets of the upper port between the two ends of the upper port; a water collection assembly for evenly dividing the jet of the cooling ring 11 into multiple groups; a pressure measuring assembly; and an inlet assembly. The inlet assembly introduces water into the product. The pressure measuring nozzle ensures accurate pressure measurement. A non-uniformity coefficient measuring device 8 is provided at the bottom of the water collection assembly. The sealing assembly blocks the flow path in the middle of the upper outlet 14, so that water can only form a jet from the cooling ring 11 at the lower end of the housing welded part. The water collection assembly evenly divides the jet into multiple groups, and each group of jets can be collected simultaneously and separately, flowing into the uniformity measuring device to complete the accurate measurement of the product jet uniformity.

[0053] like Figure 1 and Figure 6 A sealing assembly is installed at the upper outlet 14 of the welded housing component. The sealing assembly includes a top cover 71 and a fastening seal 72 that abut against both ends of the upper outlet 14. The top cover 71 and the fastening seal 72 are threaded together. A sealing ring 73 is provided on the side of the top cover 71 that contacts the upper outlet 14, and on the side of the fastening seal 72 that contacts the upper outlet 14. A fastening bolt 74 is provided between the top cover 71 and the upper outlet 14 to connect the top cover 71 and the upper outlet 14. The top cover 71 seals the upper outlet 14, and the fastening seal 72 cooperates with the top cover 71 to seal the flow path in the middle of the upper outlet 14, ensuring that water entering the welded housing component can only flow out through the cooling ring 11.

[0054] like Figure 1 , Figure 2 and Figure 5The water collection assembly includes a first sealing gasket 61, an isolation fixing plate 21, a water collection orifice plate 31, and a water collection and flow stabilizing pipe 41. The isolation fixing plate 21 is connected to the lower end of the welded part of the shell. The first sealing gasket 61 is disposed between the isolation fixing plate 21 and the lower end of the welded part of the shell. The water collection orifice plate 31 is located on the side of the isolation fixing plate 21 away from the cooling ring 11. The isolation fixing plate 21 is provided with isolation holes 22, which are evenly distributed circumferentially around the axis of the isolation plate. The water collection orifice plate 31 is provided with water passage holes 32, which are evenly distributed circumferentially around the axis of the water collection orifice plate 31. Each isolation hole 22 is opposite to at least two adjacent tangential holes 16 of the cooling ring 11. In this embodiment, each isolation hole 22 is opposite to two adjacent tangential holes 16 of the cooling ring 11. The primary functions of the first sealing gasket 61 are water passage and sealing. The first sealing gasket 61 has a first through hole 62 that corresponds one-to-one with the isolation hole 22. The first sealing gasket 61 is a flexible gasket. The first through hole 62 covers two adjacent tangential holes 16 on the cooling ring. The first sealing gasket 61, when compressed, cannot block the tangential holes 16. The first sealing gasket 61, in conjunction with the isolation fixing plate 21, combines multiple jets ejected from the cooling ring into one group. The isolation hole 22 corresponds one-to-one with and communicates with the water passage hole 32. The axis of the water passage hole 32 is located on the side of the axis of the isolation hole 22 away from the axis of the welded parts of the shell. The water collecting and stabilizing pipe 41 is connected to the water collecting orifice plate 31, and the pipe hole of the water collecting and stabilizing pipe 41 is the water passage hole 32. The water collecting orifice plate 31, the isolation fixing plate 21, and the water collecting and stabilizing pipe 41 work together to collect and stabilize the outflowing water, ensuring that the water fills the pipe, flows out slowly and evenly, and without scattering, thus realizing the function of simultaneously collecting and flowing into the uniformity measuring device for each group.

[0055] By setting the first sealing gasket 61 and the first through hole 62, the sealing problems between the isolation holes 22, between the shell welded parts and the isolation fixing plate 21, and between the first sealing gasket 61 and the isolation fixing plate 21 are solved. This ensures that the jet is evenly distributed and isolated without affecting the jet state, and that each part does not leak from each other or leak externally. Due to the product's structural dimensions, the first sealing gasket 61 must be made of a suitable sealing material, and the size of the isolation hole 22 must be precisely calculated to ensure that the first sealing gasket 61 will not deform significantly when it is fastened to the shell welded parts and the isolation fixing plate 21 (the outer diameter of the first sealing gasket 61 has no outward expansion space). This makes the isolation hole 22 larger, blocking the tangential hole from which the jet is ejected, while also having a certain amount of compression to seal the two protruding welds 17 between the isolation holes 22. In this embodiment, the gap between the outer diameter of the first sealing gasket 61 and the inner diameter of the second step of the shell welded parts that it mates with is only 0.55.

[0056] A second sealing gasket 63 is provided between the isolation fixing plate 21 and the water collection hole plate 31. The water collection hole plate 31 has a step 33 on the side facing the isolation fixing plate 21 to radially position the second sealing gasket 63. The second sealing gasket 63 is located within the step 33 and has multiple second through holes 64 arranged in a ring around its axis. The second through holes 64 are opposite to the isolation hole 22 and the water passage hole 32, and their axes are located between the axes of their respective isolation hole 22 and water passage hole 32. The second sealing gasket 63 is made of a slightly softer material than the first sealing gasket 61 for easier sealing. The second sealing gasket 63, in conjunction with the step 33, guides the flow of each jet, shifting the outflow position of each jet from the welded parts of the shell away from the axis of the welded parts, thus facilitating the detection of jet uniformity. The diameter of the water collection and flow stabilization pipe 41 is slightly smaller than that of the second sealing gasket 63, and its length is calculated and set according to the flow stabilization requirements. To avoid welding deformation affecting the sealing effect, step 33 is machined after welding the water collection and flow stabilization pipe 41 to ensure the machining accuracy of the water collector.

[0057] like Figure 1 and Figure 3 The isolation fixing plate 21 has multiple first mounting holes 23, which are arranged in a ring around the axis of the isolation fixing plate 21. The isolation fixing plate 21 is mechanically connected to the lower end of the housing welded component through the first mounting holes 23. Specifically, the connecting bolt 51 passes through the first mounting holes 23 and connects to the lower end of the housing welded component. The connecting bolt 51 is then used to attach... Figure 1 When the shell welding parts, the first sealing gasket 61, and the isolation fixing plate 21 are fastened into a whole, water can be used to check and confirm the uniformity of the jet isolation and the sealing effect of the first sealing gasket 61, ensuring that the jet isolation does not affect the jet state, and that each part does not leak from each other or leak to the outside.

[0058] like Figure 1 and Figure 4The isolation fixing plate 21 and the water collection hole plate 31 are connected by multiple first connecting members 52 and multiple second connecting members 53. The multiple first connecting members 52 are located between the circumference of the isolation hole 22 and the circumference of the first mounting hole 23, and the second connecting members 53 are located within the circumference of the isolation hole 22. Specifically, the isolation fixing plate 21 has multiple second mounting holes 24 and third mounting holes 25. The multiple second mounting holes 24 are circumferentially distributed around the axis of the isolation fixing plate 21, and the multiple third mounting holes 25 are circumferentially distributed around the axis of the isolation fixing plate 21. The second mounting holes 24 are located between the circumference of the isolation hole 22 and the circumference of the first mounting hole 23, and the third mounting holes 25 are located within the circumference of the isolation hole 22. The water collection hole plate 31 has multiple fourth mounting holes 34 and fifth mounting holes 35. The fourth mounting hole 34 is circumferentially distributed around the axis of the water collection orifice plate 31, and multiple fifth mounting holes 35 are also circumferentially distributed around the axis of the water collection orifice plate 31. The fourth mounting hole 34 is opposite to the second mounting hole 24, and the fifth mounting hole 35 is opposite to the third mounting hole 25. The first connecting piece 52 passes through the fourth mounting hole 34 and the second mounting hole 24 to connect them. The second connecting piece 53 passes through the fifth mounting hole 35 and the fourth mounting hole 34 to connect them. The arrangement of the second mounting hole 24, the third mounting hole 25, the fourth mounting hole 34, and the fifth mounting hole 35 allows for concentricity adjustment during the installation of the isolation fixing plate 21 and the water collection orifice plate 31. Hollowing out the middle of the isolation fixing plate 21 and the water collection orifice plate 31 reduces weight and facilitates the installation of the second connecting piece 53. Both the first connecting piece 52 and the second connecting piece 53 are bolts.

[0059] The isolation fixing plate 21, together with the first sealing gasket 61 and the product, divides the jet isolation into multiple groups, supports and positions the shell welding parts and the first sealing gasket 61, and positions and fixes the water collection hole plate 31 and the second sealing gasket 63.

[0060] Fixing the welded shell components and the isolation fixing plate 21: Utilizing the evenly distributed through holes on the lower flange of the welded shell components, select two symmetrical holes to fix the welded shell components to the test bench, and fix the isolation fixing plate 21 to the lower end of the welded shell components. Because the circumferential position of the cooling ring 11 is random when welded to the shell, the relative positions of the jet holes and flange holes are not fixed. Design threaded holes (first mounting holes 23) on the corresponding pitch circle D1 of the isolation fixing plate 21, with a number multiple of the flange holes and a diameter smaller than the flange holes. During installation, rotate the isolation fixing plate 21 and install as many bolts as possible to fix the isolation fixing plate 21. The design of the threaded hole diameter should not affect the installation of the water collection orifice plate 31.

[0061] Determining the position of the threaded hole pitch circle D2 of the isolation fixing plate 21: Limited by the outer diameter of the boss on the lower end face of the welded part of the shell and the outer diameter of the connecting bolt 51 between the welded part of the shell and the isolation fixing plate 21, the fixing pitch circle D2 position of the water collection hole plate 31 and the isolation fixing plate 21 is as follows: Figure 1 The distance between the outer diameter of the water collection orifice plate 31 and the outer diameter of the thread of the connecting bolt 51 is only 0.5. In order to ensure the smooth installation of the connecting bolt 51 and the first connecting piece 52, the number of threaded holes at D2 is large and the hole diameter is small, so as to ensure the fastening force between the water collection orifice plate 31 and the isolation fixing plate 21.

[0062] The position of the 21-section circle D3 of the isolation fixing plate is determined by ensuring that the product's inner cavity is not touched or scratched when installing bolts and nuts, and is as close as possible to the outer diameter of the first sealing gasket 61 and the second sealing gasket 63, so as to ensure the sealing effect of the first sealing gasket 61 and the second sealing gasket 63.

[0063] The method of using the collection device is as follows: First, connect the top cover 71 to the top of the housing welded part by fastening bolts 74, then contact the top cover 71 and the fastening seal 72 to the two ends of the upper outlet 14 respectively, and thread the top cover 71 and the fastening seal 72 together.

[0064] The first sealing gasket 61 and the isolation fixing plate 21 are fastened to the housing welded parts as a whole by connecting bolts 51. At this time, water can be passed through to check and confirm the uniformity of the jet isolation and the sealing effect of the first sealing gasket 61, ensuring that water enters and exits the product according to the required flow channel. Then, the second sealing gasket 63 is clamped at the step 33 position of the water collection orifice plate 31, and the water collection orifice plate 31 is connected to the isolation fixing plate 21 through the first connector 52 and the second connector 53. Then, the non-uniformity coefficient measuring device 8 is placed below the water collection assembly.

[0065] Water is injected into the welded parts of the shell, and the water is ejected from the tangential holes of the cooling ring at the bottom of the welded parts. The first sealing gasket 61 cooperates with the isolation fixing plate 21 to divide the jet into multiple groups. The second sealing gasket 63 moves the center of the jet nodal circle outward and guides the water to the inlet of the water collection orifice plate. The water collection orifice plate collects and stabilizes the jet, ensuring full pipe flow. The jet flows out slowly and uniformly, with no scattering at the outlet, facilitating collection. Finally, it flows into the non-uniformity coefficient measuring device 8 to obtain the test result of the jet uniformity. The accurate measurement of the product jet uniformity is completed. The device has been verified by experiments, indicating that the design structure is reasonable and compact, meets the requirements of product liquid testing, and has good performance.

[0066] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims of the present invention.

Claims

1. A shell welding piece jet flow grouping isolation flow guiding and stabilizing collecting device, characterized in that: The sealing assembly is arranged at the upper end outlet (14) of the shell welding part, and is used for sealing between two ends of the upper end outlet (14), so that the uplink cavity outlet and the downlink cavity outlet of the upper end port are sealed between the two ends of the upper end port. The water collecting assembly is arranged at the lower end of the shell welding part, and includes a separation plate group for separating the jet flow of the cooling ring (11) into a plurality of groups and a water collecting plate group for collecting and stabilizing the jet flow of each group. The first sealing gasket (61) is a flexible gasket, and the cross section of the first sealing gasket (61) is rectangular. A first through hole (62) is formed in the first sealing gasket (61), the first through hole (62) covers two adjacent tangential holes (16) of the cooling ring, the first sealing gasket (61) cannot block the tangential holes (16) when being pressed, and can seal the two raised welds (17). The separation plate group is connected to the lower end of the shell welding part, and the separation plate group is provided with separation holes (22) which are uniformly distributed around the axis of the separation plate, and each separation hole (22) is opposite to at least two tangential holes (16) of the cooling ring (11). The separation plate group includes a first sealing gasket (61) and a separation fixing plate (21), the separation holes (22) are arranged on the separation fixing plate (21), and the first sealing gasket (61) is arranged between the separation fixing plate (21) and the lower end of the shell welding part, and the first through hole (62) is opposite to the separation hole (22) one by one. The part of the injector shell (12) inside the cooling cavity (13) is provided with a second step, the separation fixing plate (21) is provided with a boss, and the boss presses the first sealing gasket (61) inside the second step. The sealing assembly includes a top cover (71) abutting the two ends of the upper end outlet (14) and a fastening sealing element (72), and the top cover (71) and the fastening sealing element (72) are threadedly connected. The side of the top cover (71) in contact with the upper end outlet (14) and the side of the fastening sealing element (72) in contact with the upper end outlet (14) are both provided with a sealing ring (73). The top cover (71) and the upper end outlet (14) are provided with a fastening bolt (74) for connecting the top cover (71) and the upper end outlet (14).

2. The shell welding piece fluidic grouping isolating flow guiding and flow stabilizing collecting device according to claim 1, characterized in that: The water collecting plate group includes a water collecting hole plate (31) and a water collecting and stabilizing pipe (41) connected to the water collecting hole plate (31), the water collecting hole plate (31) is located on the side of the separation fixing plate (21) away from the cooling ring (11), the water collecting hole plate (31) is provided with water passing holes (32) which are uniformly distributed around the axis of the water collecting hole plate (31), the separation hole (22) is opposite to and communicates with the water passing hole (32), the axis of the water passing hole (32) is located on the side of the axis of the separation hole (22) away from the axis of the shell welding part, and the water collecting and stabilizing pipe (41) communicates with the water passing hole (32).

3. The shell welding piece fluidic packet isolating flow guiding and flow stabilizing collection apparatus of claim 2, wherein: The second sealing gasket (63) is arranged between the separation fixing plate (21) and the water collecting hole plate (31), and the side of the water collecting hole plate (31) facing the separation fixing plate (21) is provided with a step (33), and the second sealing gasket (63) is located in the step (33).

4. The shell welding piece fluidic packet isolating flow guiding and flow stabilizing collection apparatus of claim 2, wherein: The isolation fixing plate (21) is provided with a plurality of first mounting holes (23), the plurality of first mounting holes (23) are annularly distributed around the axis of the isolation fixing plate (21), and the isolation fixing plate (21) is mechanically connected with the lower end of the shell welding part through the first mounting holes (23).

5. The shell welding piece fluidic packet isolating flow guiding and flow stabilizing collection apparatus of claim 4, wherein: The isolation fixing plate (21) and the water collecting hole plate (31) are connected through a plurality of first connecting pieces (52) and a plurality of second connecting pieces (53), the plurality of first connecting pieces (52) are located between the circumferences where the isolation holes (22) and the first mounting holes (23) are located, and the second connecting pieces (53) are located in the circumference where the isolation holes (22) are located.

6. The method of using a shell weldment fluidic packet isolating flow directing flow stabilizing collecting device according to any one of claims 1-5, wherein, Comprise: Install the plugging assembly to plug the up-and-down cavity outlet in the middle of the upper end outlet (14); Install the water collecting assembly capable of dividing the jet flow of the cooling ring (11) into a plurality of strands, fix the shell welding part and the test bench, and Place the uneven coefficient measuring device (8) below the water collecting assembly.

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