Device and method for detecting the maximum outer dimensions of a shell-and-tube heat exchanger

Abstract

The application discloses a maximum outer dimension detection device and method of a shell type heat exchanger, which comprises a right measurer, a reference disc, a positioning spindle, a front measurer, a right support, a pressing sleeve, a round nut, a bottom plate, a left support, a rear measurer, a small positioning spindle, a left measurer and a slider assembly. The left measurer, the right measurer, the front measurer and the rear measurer are slidably installed on the plane of the bottom plate through the slider assembly, the reference disc is liftably installed on the plane of the bottom plate, and length scale lines are arranged on the bottom plate and correspond to the sliding directions of the measurers. The shell type heat exchanger is positioned and pressed through the mounting lugs, then the size measurement is realized through the sliding measurers and the lifting reference disc, and finally the actual maximum dimensions of the shell type heat exchanger in the X, Y and Z directions in space can be obtained through simple data processing, and the measurement can be completed only through once clamping, positioning and adjusting, which is simple, efficient and accurate.

Description

Technical Field

[0001] This invention belongs to the field of industrial testing technology, specifically relating to a device and method for detecting the maximum external dimensions of stainless steel shell-and-shell heat exchangers. Background Technology

[0002] The newly developed stainless steel shell heat exchanger is an engine oil cooling accessory. Its installation space on the engine is limited, and its dimensions cannot exceed the specified dimensions for installation. Figure 1 , Figure 2 , Figure 3 The dimensions (X, Y, Z) are specified, and it is also required that the specific maximum external dimensions of each stainless steel shell heat exchanger be recorded before it leaves the factory.

[0003] Stainless steel shell-and-shell heat exchangers are all-welded products, such as... Figure 1 , Figure 2 , Figure 3 As shown, the stainless steel shell-and-tube heat exchanger includes one heat dissipation core 101, several oil / fuel inlet / outlet nozzles 102 in various positions, and four mounting lugs 103. Because the maximum external dimensions of the stainless steel shell-and-tube heat exchanger are entirely spatial dimensions, and there is no supporting plane in any dimension, the stainless steel shell-and-tube heat exchanger cannot be placed stably. Relying solely on manual inspection presents the following problems:

[0004] 1. Low efficiency: Manual inspection is time-consuming. The inspection of the dimensions of each stainless steel shell heat exchanger in each direction takes more than 7 minutes, from placement, adjustment, alignment, measurement and data processing.

[0005] 2. Inaccurate measurement data: Since the maximum external dimensions of the stainless steel shell heat exchanger are all spatial dimensions, there is no supporting plane in each dimension direction, making it difficult to find the maximum point of each dimension. Due to the influence of human operation, the dimension measurement error is 2-6mm.

[0006] Compared to similar stainless steel shell-and-shell heat exchanger products, its features are:

[0007] 1. The maximum external dimensions of the newly developed stainless steel shell heat exchanger are all spatial dimensions, and there is no supporting plane in each dimension direction, making it difficult to accurately find the maximum point of each dimension.

[0008] 2. The host provider is required to provide specific data on the maximum external dimensions of each stainless steel shell-and-shell heat exchanger.

[0009] The newly developed stainless steel shell-type heat exchanger has a short development cycle. Summary of the Invention

[0010] The present invention aims to provide a device and method for detecting the maximum external dimensions of a shell-type heat exchanger, which can accurately obtain the maximum external dimensions in all directions by performing a single positioning, clamping and adjustment of a stainless steel shell-type heat exchanger.

[0011] To solve the above problems, the present invention adopts the following technical solution:

[0012] A device for detecting the maximum external dimensions of a shell-and-shell heat exchanger, comprising:

[0013] The base plate has four length scale lines on its upper surface;

[0014] The device comprises a left measuring device, a right measuring device, a front measuring device, and a rear measuring device. All of these measuring devices are slidably mounted on the upper surface of the base plate. The sliding directions of the left and right measuring devices are parallel, as are the sliding directions of the front and rear measuring devices. The sliding directions of the left and right measuring devices are perpendicular to the sliding directions of the front and rear measuring devices. The left measuring device contains a measuring plane N perpendicular to its sliding direction, the right measuring device contains a measuring plane N perpendicular to its sliding direction, the front measuring device contains a measuring plane H perpendicular to its sliding direction, and the rear measuring device contains a measuring plane H perpendicular to its sliding direction. Each of the left, right, front, and rear measuring devices corresponds to a length scale line on the upper surface of the base plate in its respective sliding direction.

[0015] The two reference plates are liftably mounted on the upper plane of the base plate and are located between the left measuring device, the right measuring device, the front measuring device and the rear measuring device. The reference plate includes a plane G parallel to the base plate.

[0016] The two right supports are mounted on the upper plane of the base plate and are located on both sides of one of the reference plates and close to the right measuring device. The right supports include a surface R, a hole E and a hole F.

[0017] Left supports, two of which are mounted on the upper plane of the base plate and located on either side of another reference plate and close to the left measuring device, the left supports include holes F1 and F2;

[0018] A positioning mandrel is inserted into hole F with the right support. The positioning mandrel includes a smooth rod section and a threaded section.

[0019] Small positioning mandrel, which is inserted into the left support in holes F1 and F2;

[0020] A clamping sleeve is fitted onto the right support. The clamping sleeve includes an outer circle E1, an inner hole E2, and a lower end face E4. The outer circle E1 is slidably installed in the hole E of the right support, and the inner hole E2 is sleeved on the threaded section of the positioning mandrel.

[0021] A round nut, which is fitted onto the threaded section of the positioning mandrel.

[0022] As one embodiment, the maximum external dimension detection device for a shell-and-shell heat exchanger further includes a first slider assembly and a second slider assembly fixed to the flat surface of the base plate, wherein:

[0023] The front and rear measuring devices are slidably connected to the base plate via a first slider assembly;

[0024] The left and right measuring instruments are slidably connected to the base plate via a second slider assembly.

[0025] further:

[0026] Both the first slider assembly and the second slider assembly are fixed to the upper surface of the base plate by screws;

[0027] The left measuring device, right measuring device, front measuring device, and rear measuring device are all fixed to the first slider assembly and the second slider assembly by screws.

[0028] As one option, both the first slider assembly and the second slider assembly are standard parts, and include a P6 precision guide rail and an H-grade slider.

[0029] Alternatively, the gap between the lower end face of the left measuring device, right measuring device, front measuring device and rear measuring device and the upper plane of the base plate is no greater than 0.1 mm, and the intersection of the lower end face with the measuring plane N1, measuring plane N, measuring plane H and measuring plane H1 is an acute edge.

[0030] Alternatively, the upper ends of the measuring planes N1, N, H, and H1 are symmetrical, and the lower ends are eccentric, with the upper width of the measuring planes N1, N, H, and H1 being greater than the lower width.

[0031] Alternatively, a waist-shaped hole is provided at the starting position of the four length scale lines on the upper surface of the base plate, and one straight edge of the waist-shaped hole serves as the zero line of the scale.

[0032] A method for detecting the maximum external dimensions of a shell-and-shell heat exchanger, employing the aforementioned detection device, and comprising:

[0033] Step 1: Place the shell-and-shell heat exchanger into the testing device and hold it in place. Insert the positioning mandrel through the hole F of the right support into the hole I of the mounting lug on the right end of the shell-and-shell heat exchanger. Then insert the small positioning mandrel through the hole F2 of the left support into the hole I of the mounting lug on the left end of the shell-and-shell heat exchanger. Finally, insert it through the hole I into the hole F1 of the left support to position the shell-and-shell heat exchanger.

[0034] Step 2: Install the clamping sleeve and round nut on the positioning mandrel. Rotate the round nut to push the clamping sleeve to move axially along the positioning mandrel. The lower end face E4 of the clamping sleeve pushes the shell heat exchanger so that the mounting lug L is in close contact with the right support face R, thereby clamping the stainless steel shell heat exchanger.

[0035] Step 3: Take measurements along the X, Y, and Z directions, where:

[0036] In the X direction, slide the left measuring device. When the measuring plane N1 touches the high point K of the fuel oil inlet and outlet nozzles, record the length scale reading Δ1 corresponding to the measuring plane N1. Then slide the right measuring device. When the measuring plane N touches the high point Q of the fuel oil inlet and outlet nozzles, record the length scale reading Δ4 corresponding to the measuring plane N.

[0037] In the Y direction, after sliding the measuring device, when the measuring plane H1 touches the high point R1 of the fuel oil inlet / outlet nozzle, record the length scale reading Δ2 corresponding to the measuring plane H1. Then slide the measuring device again, when the measuring plane H touches the high point J of the mounting lug, record the length scale reading Δ3 corresponding to the measuring plane H.

[0038] In the Z direction, adjust the height of the reference plate so that its upper plane G touches the lowest point P at the bottom of the shell heat exchanger. Then measure the distance Z2 between the upper plane G of the reference plate and the upper surface of the bottom plate. Then measure the distance Z3 between the highest point O of the shell heat exchanger and the upper surface of the bottom plate.

[0039] Step four, data processing: Calculate the maximum dimension using the measurement data from step three as follows:

[0040] The actual maximum dimension in the X direction is C-Δ1+D-Δ4;

[0041] The actual maximum dimension in the Y direction is A-Δ2+B-Δ3;

[0042] The actual maximum dimension in the Z direction is Z3-Z2, where A represents the length distance from the zero mark of the length scale corresponding to the rear measuring device to the axis of the hole E on the right support, B represents the length distance from the zero mark of the length scale corresponding to the front measuring device to the axis of the hole E on the right support, C represents the length distance from the zero mark of the length scale corresponding to the left measuring device to the surface R on the right support, and D represents the length distance from the zero mark of the length scale corresponding to the right measuring device to the surface R on the right support.

[0043] Compared with the prior art, the present invention, because the maximum external dimension detection device for stainless steel shell heat exchangers only requires one clamping to complete the detection of the maximum external dimension of the stainless steel shell heat exchanger in three directions, and the data can be obtained through simple addition and subtraction calculations, is more labor-saving during operation, reduces assembly and adjustment time, and improves production efficiency. It also has the following advantages:

[0044] (1) The present invention has a simple structure, is lightweight and easy to install and remove. It uses the principle of unified reference and simple addition and subtraction rules to achieve accurate measurement of the maximum external dimensions of stainless steel shell heat exchangers.

[0045] (2) The present invention is easy to operate, and operators can master the key points after simple training, which can effectively improve production efficiency. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the welded structure of a stainless steel shell-and-shell heat exchanger.

[0047] Figure 2 yes Figure 1 The view of the city;

[0048] Figure 3 yes Figure 2 The view

[0049] Figure 4 This is a schematic diagram of the device for detecting the maximum external dimensions of a stainless steel shell-type heat exchanger.

[0050] Figure 5 yes Figure 4 A top view, where the dashed lines represent a stainless steel shell-and-shell heat exchanger;

[0051] Figure 6 This is a schematic view of the right measuring instrument.

[0052] Figure 7 yes Figure 5 Top view;

[0053] Figure 8 This is a schematic diagram of the base plate structure;

[0054] Figure 9 This is a schematic diagram of the positioning mandrel structure;

[0055] Figure 10 Here is a schematic diagram of the front measuring device:

[0056] Figure 11 yes Figure 10 Top view;

[0057] Figure 12 This is a schematic diagram of the right support structure;

[0058] Figure 13 yes Figure 12 Top view;

[0059] Figure 14 This is a schematic diagram of the clamping sleeve structure;

[0060] Figure 15 This is a schematic diagram of a round nut structure;

[0061] Figure 16 This is a schematic diagram of the base plate structure;

[0062] Figure 17 yes Figure 16 A magnified view of a portion of the image;

[0063] Figure 18 This is a schematic diagram of the left support structure;

[0064] Figure 19 This is a schematic diagram of the rear measuring device structure;

[0065] Figure 20 yes Figure 19 Top view;

[0066] Figure 21 This is a schematic diagram of the small positioning mandrel structure;

[0067] Figure 22 This is a schematic diagram of the left measuring device;

[0068] Figure 23 yes Figure 22 Top view;

[0069] In the diagram: 101-Heat dissipation core, 102-Fuel and lubricating oil inlet / outlet nozzles, 103-Mounting lugs, 1-Right measuring device, 2-Reference plate, 3-Positioning mandrel, 4-Second pin, 5-Front measuring device, 6-Right support, 7-Pressure sleeve, 8-Round nut, 9-Base plate, 10-Left support, 11-Rear measuring device, 12-First screw, 13-First pin, 14-First slider assembly, 15-Small positioning mandrel, 16-Second screw, 17-Second slider assembly, 18-Left measuring device, 19-Third screw. Detailed Implementation

[0070] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0071] like Figures 4-23As shown, this invention provides a device for detecting the maximum external dimensions of a stainless steel shell-type heat exchanger. It mainly includes a right measuring device 1, a reference plate 2, a positioning mandrel 3, a front measuring device 5, a right support 6, a clamping sleeve 7, a round nut 8, a base plate 9, a left support 10, a rear measuring device 11, a small positioning mandrel 15, a left measuring device 18, and a slider assembly. The surface R of the right support 6 corresponds to the mounting lug surface L of the stainless steel shell-type heat exchanger, and the cylindrical section of the positioning mandrel 3 corresponds to the mounting lug hole I of the stainless steel shell-type heat exchanger. The right measuring device 1... The measuring surface N of the left measuring device 18 corresponds to the high point Q of the oil inlet / outlet nozzle 102 of the stainless steel shell heat exchanger. The measuring surface N1 of the left measuring device 18 corresponds to the high point K of the oil inlet / outlet nozzle 102 of the stainless steel shell heat exchanger. The measuring surface H of the front measuring device 5 corresponds to the high point J of the mounting lug 103 of the stainless steel shell heat exchanger. The measuring surface H1 of the rear measuring device 11 corresponds to the high point R1 of the oil inlet / outlet nozzle 102 of the stainless steel shell heat exchanger. The upper plane G of the reference plate 2 corresponds to the lowest point P of the stainless steel shell heat exchanger.

[0072] The slider assembly is divided into a first slider assembly 14 (corresponding to the front measuring device 5 and the rear measuring device 11) and a second slider assembly 17 (corresponding to the right measuring device 1 and the left measuring device 18). The first slider assembly 14 and the second slider assembly 17 are standard parts and are fixed to the base plate 9 by the second screw 16. Each measuring device is fixed on the slider of the slider assembly to ensure that the measuring device can slide freely without tilting.

[0073] The right measuring device 1 has planes N and M. Plane N serves as the measuring plane for measuring the actual size of the product and aligning with the scale lines. Plane M is in close contact with the upper plane of the standard slider in the second slider assembly 17 and is fixed to the second slider assembly 17 through a small hole and a third screw 19.

[0074] The upper end of the reference plate 2 has a flat surface G, which is used to support the lowest point of the stainless steel shell heat exchanger; the lower end has threads, which are used to adjust the upper and lower movement of the reference plate 2 relative to the base plate 9.

[0075] The right end of the positioning mandrel 3 has a thread (e.g.) Figure 9 The right end of the external thread shown is a smooth rod in the middle. The smooth rod is inserted into the middle hole F of the right support 6 and the mounting lug hole I of the stainless steel shell heat exchanger to position the stainless steel shell heat exchanger. For ease of operation, a second pin 4 is also installed on the right end of the positioning mandrel 3.

[0076] The front measuring device 5 has planes H and J. Plane H serves as the measuring plane for measuring the actual size of the product and aligning with the scale lines. Plane J is in close contact with the upper plane of the standard slider in the first slider assembly 14 and is fixed to the first slider assembly 14 through a small hole and a third screw 19.

[0077] There are two right supports 6. The right support 6 has holes E and F and a surface R. Hole F is used to insert the positioning mandrel 3. The right support 6 itself is fixed to the base plate 9 by the first screw 12 and the first pin 13.

[0078] The clamping sleeve 7 has an outer circle E1, an inner hole E2, an upper end face E3, and a lower end face E4. The outer circle E1 is installed in the hole E of the right support 6 and can slide freely. The inner hole E2 is installed in the threaded section of the positioning mandrel 3 and can slide freely on the positioning mandrel 3.

[0079] The round nut 8 has a thread in the middle, which is screwed onto the end of the threaded section of the positioning mandrel 3. This thread is used to push the clamping sleeve 7 to press the stainless steel shell heat exchanger mounting lug onto the surface R of the right support 6.

[0080] The base plate 9 has four length scale lines on its upper surface. These lines are used in conjunction with various measuring instruments to measure the maximum external dimensions of the stainless steel shell-type heat exchanger and read the measurement data. The four length scale lines are set along the sliding direction of their respective measuring instruments. Figure 5 Each measuring instrument has a series of parallel short line segments on the side facing the stainless steel shell heat exchanger. The starting position of each segment has a waist-shaped hole, and one straight edge of the waist-shaped hole marks the zero mark of the length scale. For example... Figure 5 As shown in the figure, dimension A represents the distance from the zero mark of the length scale corresponding to the rear measuring device 11 to the axis of hole E of the right support 6; dimension B represents the distance from the zero mark of the length scale corresponding to the front measuring device 5 to the axis of hole E of the right support 6; dimension C represents the distance from the zero mark of the length scale corresponding to the left measuring device 18 to the surface R of the right support 6; and dimension D represents the distance from the zero mark of the length scale corresponding to the right measuring device 1 to the surface R of the right support 6. Dimensions A, B, C, and D are used to calculate the final maximum size of the heat exchanger space. Figure 16 As shown, dimensions A, B, C, and D are 258mm, 22mm, 318mm, and 137mm, respectively. Figure 16 Each division on the medium-length scale represents a 1mm length. For example, the maximum external dimension of a shell-and-shell heat exchanger in the Y direction is determined by two dimensions Y1 (corresponding to...). Figure 5 (A-dimension position), Y2 (corresponding) Figure 5 Composed of dimensions B in the middle, the number of grids moved inward is Δ2 (corresponding to...). Figure 5 (position of dimension A), Δ3 (corresponding to) Figure 5 The actual dimensions are Y1 = A - Δ2 and Y2 = B - Δ3, which can be read directly from the position of dimension B. Therefore, the actual maximum external dimensions in the Y direction are Y1 = Y1 + Y2 = A - Δ2 + B - Δ3.

[0081] There are two left supports 10. The left support 10 has holes F1 and F2. Holes F1 and F2 are used to insert small positioning mandrels 15. The left support 10 itself is fixed to the base plate 9 by the first screw 12 and the first pin 13. For ease of operation, the left end of the left support 10 is also equipped with a second pin 4.

[0082] The rear measuring device 11 has planes H1 and J1. The H1 plane is used as a measuring plane to measure the actual size of the product and align with the scale lines. The J1 plane is in close contact with the upper plane of the standard slider and is fixed to the slider assembly of the first slider assembly 14 through a small hole and a third screw 19.

[0083] The middle section of the small positioning mandrel 15 is a smooth rod, which is inserted into the holes F1 and F2 of the left support 10 and the mounting lug hole I of the stainless steel shell heat exchanger to achieve positioning of the stainless steel shell heat exchanger.

[0084] The left measuring device 18 has planes N1 and M1. The N1 plane is used as a measuring plane to measure the actual size of the product and align with the scale lines. The M1 plane is in close contact with the upper plane of the standard slider in the second slider assembly 17 and is fixed to the second slider assembly 17 through a small hole and a third screw 19.

[0085] To ensure that all measuring instruments (left measuring instrument 18, right measuring instrument 1, front measuring instrument 5 and rear measuring instrument 11) can slide freely without causing large reading errors, after assembly, the gap between the lower end face (C1 face) of each measuring instrument and the upper plane of the base plate 9 shall not exceed 0.1mm, and the intersection of the C1 face and the measuring surfaces (measuring plane N1, measuring plane N, measuring plane H and measuring plane H1) must maintain a sharp edge.

[0086] To facilitate measurement and reading, the upper end of the measuring surfaces of the measuring instrument (measuring plane N1, measuring plane N, measuring plane H and measuring plane H1) is designed to be symmetrical and relatively wide in order to better capture the high points of the product, while the lower end is designed to be eccentric or relatively narrow to facilitate the scale lines and readings.

[0087] Because the accuracy of the scale starting position is high, requiring no more than 0.01mm, a waist-shaped hole is machined on the base plate 9 at the scale starting position. One straight side of the waist-shaped hole is used as the scale zero line to facilitate the acceptance and reading reference of the maximum external dimension detection device for stainless steel shell heat exchangers.

[0088] When the stainless steel shell heat exchanger is installed into the stainless steel shell heat exchanger maximum external dimension detection device, the stainless steel shell heat exchanger is positioned and pressed under the action of the positioning mandrel 3, right support 6, clamping sleeve 7, and round nut 8 to ensure that the stainless steel shell heat exchanger is fixed in place. The maximum external dimension of the stainless steel shell heat exchanger is measured by sliding the measuring instruments.

[0089] The principle and characteristics of the maximum external dimension detection device for stainless steel shell heat exchangers are as follows:

[0090] 1. Simplicity of Measurement Data Processing: First, install the stainless steel shell-and-shell heat exchanger into the maximum external dimension detection device. Gently hold the stainless steel shell-and-shell heat exchanger by hand. Insert the positioning mandrel 3 through hole F of the right support 6 into hole I of the right end mounting lug 103 of the stainless steel shell-and-shell heat exchanger. Then, insert the small positioning mandrel 15 through hole F2 of the left support 10 into hole I of the left end mounting lug 103 of the stainless steel shell-and-shell heat exchanger, and through hole I into hole F1 of the left support 10, thus positioning the stainless steel shell-and-shell heat exchanger. Install the clamping sleeve 7 and round nut 8 on the positioning mandrel 3. Rotate the round nut 8 to push the clamping sleeve 7 to move axially along the positioning mandrel 3. The lower end face E4 of the clamping sleeve 7 pushes the stainless steel shell-and-shell heat exchanger, making its mounting lug L surface tightly adhere to it. The surface R of the right support 6 is used to press the stainless steel shell heat exchanger. Next, measurement is performed, taking the measurement of the stainless steel shell heat exchanger dimension "Y" as an example. The measuring device 11 is slid so that the upper part of the measuring plane H1 lightly touches the high point R1 of the flammable oil inlet / outlet nozzle 102 of the stainless steel shell heat exchanger. The number of scale divisions Δ2 (counting from the outside in) that the lower end of the measuring plane H1 moves through is then observed. Similarly, the measuring device 5 is slid so that the measuring surface H of the front measuring device 5 lightly touches the high point in the Y direction of the mounting lug 103 of the stainless steel shell heat exchanger. The number of scale divisions Δ3 (counting from the outside in) that the lower end of the front measuring plane H moves through is then observed. Finally, the data is processed: the actual dimension Y1 of the stainless steel shell heat exchanger "Y" is Y1 = A - Δ2 + B - Δ3. The method for measuring the stainless steel shell heat exchanger dimension "X" is the same. To measure the size "Z" of the stainless steel shell heat exchanger, adjust the reference plate 2 so that its upper surface G lightly touches the lowest point of the bottom of the stainless steel shell heat exchanger. First, use a height gauge to measure the distance Z2 from the upper surface G of the reference plate 2 to the upper surface of the base plate 9. Then, measure the distance Z3 from the highest point of the stainless steel shell heat exchanger to the upper surface of the base plate. The actual size Z of the stainless steel shell heat exchanger "Z" is Z1 = Z3 - Z2.

[0091] 2. Accuracy in capturing high points: The measuring surfaces of each measuring instrument are relatively wide, all of which encompass the variation range of the high point R1 of the lubricating oil inlet and outlet nozzles 102 and the high point of the mounting lugs 103 of the stainless steel shell heat exchanger.

[0092] This invention uses a direct sliding measuring device to measure the maximum external dimensions X and Y of a stainless steel shell-and-shell heat exchanger. The actual dimensions X1 and Y1 are obtained through simple addition. The maximum external dimension Z is measured using a height gauge at the upper plane of the tooling reference plate (i.e., the lowest point of the stainless steel shell-and-shell heat exchanger) and the highest point of the stainless steel shell-and-shell heat exchanger. The actual dimension Z1 is obtained through simple subtraction. This reduces the need for placing, adjusting, and aligning the stainless steel shell-and-shell heat exchanger in every direction. Measurements can be taken with only one positioning, clamping, and fine-tuning of the tooling reference plate, ensuring accurate measurement data. It also reduces reliance on operator experience and shortens the total time for measuring the dimensions of a stainless steel shell-and-shell heat exchanger in three directions to within 5 minutes.

[0093] Example:

[0094] 1. Clamping and positioning: Install the stainless steel shell heat exchanger into the maximum external dimension detection device for the stainless steel shell heat exchanger. Gently hold the stainless steel shell heat exchanger by hand. Insert the positioning mandrel 3 through the hole F of the right support 6 into the hole I of the mounting lug 103 on the right end of the stainless steel shell heat exchanger. Then insert the small positioning mandrel 15 through the hole F2 of the left support 10 into the hole I of the mounting lug 103 on the left end of the stainless steel shell heat exchanger, and insert it through the hole I into the hole F1 of the left support 10, thereby positioning the stainless steel shell heat exchanger.

[0095] 2. Tightening: Install the clamping sleeve 7 and round nut 8 on the positioning mandrel 3. Rotate the round nut 8 to push the clamping sleeve 7 to move axially along the positioning mandrel 3. The lower end face E4 of the clamping sleeve 7 pushes the stainless steel shell heat exchanger so that its mounting lug L is in close contact with the face R of the right support 6, thereby tightening the stainless steel shell heat exchanger.

[0096] 3. Measurement: Taking the measurement of the "Y" dimension of a stainless steel shell heat exchanger as an example, the measurement, reading, and data processing are performed. After sliding the measuring device 11, the upper part of the measuring plane H1 of the measuring device is lightly brought against the high point R1 of the inlet and outlet nozzles 102 of the lubricating oil of the stainless steel shell heat exchanger. Then observe the number of scale divisions Δ2 (counting from the outside to the inside) that the lower end of the measuring plane H1 has moved through. In the same way, slide the front measuring device 5, so that the measuring plane H of the front measuring device is lightly brought against the high point in the Y direction of the mounting lug 103 of the stainless steel shell heat exchanger. Then observe the number of scale divisions Δ3 (counting from the outside to the inside) that the lower end of the front measuring plane H has moved through.

[0097] 4. Data Processing: The actual dimension Y1 of the stainless steel shell-and-shell heat exchanger “Y” is calculated as A - Δ2 + B - Δ3. The method for measuring the dimension “X” of the stainless steel shell-and-shell heat exchanger is the same. To measure the dimension “Z” of the stainless steel shell-and-shell heat exchanger, adjust the reference plate 2 so that its upper plane G lightly touches the lowest point of the bottom of the stainless steel shell-and-shell heat exchanger. First, use a height gauge to measure the distance Z2 from the upper plane G of the reference plate 2 to the upper plane of the base plate 9. Then, measure the distance Z3 from the highest point of the stainless steel shell-and-shell heat exchanger to the upper plane of the base plate. The actual dimension Z1 of the stainless steel shell-and-shell heat exchanger “Z” is calculated as Z3 - Z2.

[0098] 5. Disassembly: Remove the round nut 8, pull out the positioning mandrel 3 and the small positioning mandrel 15, and remove the stainless steel shell heat exchanger from the stainless steel shell heat exchanger maximum external dimension detection device.

[0099] The stainless steel shell heat exchangers tested by the aforementioned maximum external dimension detection device have accurate and reliable measurement data with a measurement error of no more than 0.5 mm, eliminating the reliance on operator experience.

[0100] In terms of applicability, this stainless steel shell heat exchanger maximum external dimension detection device has a simple structure and is easy to operate. After a brief introduction, the operator can master its operating techniques and operate it with ease.

[0101] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A device for detecting the maximum external dimensions of a shell-and-shell heat exchanger, characterized in that, include: The base plate (9) has four length scale lines on its upper surface; Left measuring device (18), right measuring device (1), front measuring device (5), and rear measuring device (11). The left measuring device (18), right measuring device (1), front measuring device (5), and rear measuring device (11) are all slidably disposed on the upper plane of the base plate (9). The sliding direction of the left measuring device (18) is parallel to that of the right measuring device (1), the sliding direction of the front measuring device (5) is parallel to that of the rear measuring device (11), and the sliding direction of the left measuring device (18) and the right measuring device (1) is perpendicular to the sliding direction of the front measuring device (5) and the rear measuring device (11). The left measuring device (18) is slidably disposed on the upper plane of the base plate (9). The sliding direction of the left measuring device (18) and the right measuring device (1) is perpendicular to the sliding direction of the front measuring device (5) and the rear measuring device (11). 8) The measuring plane N1 is perpendicular to the sliding direction of the left measuring device (18), the measuring plane N is perpendicular to the sliding direction of the right measuring device (1), the measuring plane H is perpendicular to the sliding direction of the front measuring device (5), and the measuring plane H1 is perpendicular to the sliding direction of the rear measuring device (11). The left measuring device (18), the right measuring device (1), the front measuring device (5) and the rear measuring device (11) correspond to a length scale line on the upper plane of the base plate (9) in their respective sliding directions. Reference plate (2), two reference plates (2) are liftably mounted on the upper plane of the base plate (9) and are located between the left measuring device (18), the right measuring device (1), the front measuring device (5) and the rear measuring device (11). The reference plate (2) contains a plane G parallel to the base plate (9). Right support (6), two right supports (6) are mounted on the upper plane of the base plate (9) and are located on both sides of one of the reference plates (2) and close to the right measuring device (1). The right support (6) includes a surface R, a hole E and a hole F. Left support (10), two left supports (10) are mounted on the upper plane of the base plate (9) and are located on both sides of another reference plate (2) and close to the left measuring device (18). The left support (10) includes holes F1 and F2. Positioning mandrel (3), the positioning mandrel (3) and the right support (6) are inserted into hole F, the positioning mandrel (3) includes a smooth rod section and a threaded section; Small positioning mandrel (15), which is inserted into the left support (10) in holes F1 and F2; The clamping sleeve (7) is assembled on the right support (6). The clamping sleeve (7) includes an outer circle E1, an inner hole E2 and a lower end face E4. The outer circle E1 is slidably installed in the hole E of the right support (6), and the inner hole E2 is sleeved on the threaded section of the positioning mandrel (3). A round nut (8) is mounted on the threaded section of a positioning mandrel (3).

2. The maximum external dimension detection device for a shell-and-shell heat exchanger according to claim 1, characterized in that: It also includes a first slider assembly (14) and a second slider assembly (17) fixed to the upper plane of the base plate (9), wherein: The front measuring device (5) and the rear measuring device (11) are slidably connected to the base plate (9) via the first slider assembly (14); The left measuring device (18) and the right measuring device (1) are slidably connected to the base plate (9) via the second slider assembly (17).

3. The maximum external dimension detection device for a shell-and-shell heat exchanger according to claim 2, characterized in that: The first slider assembly (14) and the second slider assembly (17) are both fixed to the upper surface of the base plate (9) by screws; The left measuring device (18), right measuring device (1), front measuring device (5) and rear measuring device (11) are all fixed to the first slider assembly (14) and the second slider assembly (17) by screws.

4. The maximum external dimension detection device for a shell-and-shell heat exchanger according to claim 2, characterized in that: The first slider assembly (14) and the second slider assembly (17) are both standard parts and include a P6 precision guide rail and an H-grade slider.

5. The maximum external dimension detection device for a shell-and-shell heat exchanger according to claim 1, characterized in that: The gap between the lower end face of the left measuring device (18), right measuring device (1), front measuring device (5) and rear measuring device (11) and the upper plane of the base plate (9) is no greater than 0.1mm, and the intersection of the lower end face with the measuring plane N1, measuring plane N, measuring plane H and measuring plane H1 is an acute edge.

6. The maximum external dimension detection device for a shell-and-shell heat exchanger according to claim 1, characterized in that: The upper ends of the measurement planes N1, N, H, and H1 are symmetrical, while the lower ends are eccentric. The width of the upper ends of the measurement planes N1, N, H, and H1 is greater than the width of the lower ends.

7. The maximum external dimension detection device for a shell-and-shell heat exchanger according to claim 1, characterized in that: A waist-shaped hole is provided at the starting position of the four length scale lines on the upper plane of the base plate (9), and one straight edge of the waist-shaped hole serves as the zero line of the scale.

8. A method for detecting the maximum external dimensions of a shell-and-shell heat exchanger, characterized in that: The detection device according to claim 1 is used, and includes: Step 1: Place the shell heat exchanger into the testing device and hold the shell heat exchanger in place. Insert the positioning mandrel (3) through the hole F of the right support (6) into the hole I of the right end mounting lug (103) of the shell heat exchanger. Then insert the small positioning mandrel (15) through the hole F2 of the left support (10) into the hole I of the left end mounting lug (103) of the shell heat exchanger. Then insert it through the hole I into the hole F1 of the left support (10), thereby positioning the shell heat exchanger. Step 2: Install the clamping sleeve (7) and round nut (8) on the positioning mandrel (3), rotate the round nut (8) to push the clamping sleeve (7) to move along the axial direction of the positioning mandrel (3), and the lower end face E4 of the clamping sleeve (7) pushes the shell heat exchanger so that the mounting lug L surface is in close contact with the surface R of the right support (6) to achieve the clamping of the stainless steel shell heat exchanger; Step 3: Take measurements along the X, Y, and Z directions, where: In the X direction, slide the left measuring device (18). When the measuring plane N1 touches the high point K of the fuel oil inlet / outlet nozzle (102), record the length scale reading Δ1 corresponding to the measuring plane N1. Then slide the right measuring device (1). When the measuring plane N touches the high point Q of the fuel oil inlet / outlet nozzle (102), record the length scale reading Δ4 corresponding to the measuring plane N. In the Y direction, after sliding the measuring device (11), when the measuring plane H1 touches the high point R1 of the fuel oil inlet / outlet nozzle (102), record the length scale reading Δ2 corresponding to the measuring plane H1. Then slide the measuring device (5) again, when the measuring plane H touches the high point J of the mounting lug (103), record the length scale reading Δ3 corresponding to the measuring plane H. In the Z direction, adjust the height of the reference plate (2) so that its upper plane G touches the lowest point P at the bottom of the shell heat exchanger. Then measure the distance Z2 between the upper plane G of the reference plate (2) and the upper plane of the bottom plate (9). Then measure the distance Z3 between the highest point O of the shell heat exchanger and the upper plane of the bottom plate (9). Step four, data processing: Calculate the maximum dimension using the measurement data from step three as follows: The actual maximum dimension in the X direction is C-Δ1+D-Δ4; The actual maximum dimension in the Y direction is A-Δ2+B-Δ3; The actual maximum dimension in the Z direction is Z3-Z2, where A represents the length distance from the zero mark of the length scale line corresponding to the rear measuring device (11) to the hole E axis of the right support (6), B represents the length distance from the zero mark of the length scale line corresponding to the front measuring device (5) to the hole E axis of the right support (6), C represents the length distance from the zero mark of the length scale line corresponding to the left measuring device (18) to the surface R of the right support (6), and D represents the length distance from the zero mark of the length scale line corresponding to the right measuring device (1) to the surface R of the right support (6).

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