Split type compressor casing for measuring pressure of inner wall surface

Abstract

The utility model relates to the field of gas compressor experimental measurement, in particular to a split type gas compressor casing for measuring the pressure of an inner wall surface, which comprises a gas compressor base casing, and a plurality of first pressure guide holes are formed in the middle base surface of the gas compressor base casing; the gas compressor flow channel is provided with a base and a flow channel pipe which are connected, the base is detachably arranged on the middle base face of the gas compressor base shell through a connecting part, and the base is provided with a second pressure guiding hole corresponding to the first pressure guiding hole in position; the third pressure guiding holes are formed in an arc-shaped transition area between the base and the flow channel pipe, and the fourth pressure guiding holes are formed in the flow channel pipe; the pressure guiding end of the adopted pressure guiding hose can be detachably connected with the second pressure guiding hole, the third pressure guiding hole and the fourth pressure guiding hole. According to the utility model, a split type detachable structure is adopted, the pressure guide holes are formed in a split manner, and then the pressure guide holes and the pressure guide holes are assembled together, so that pressure measurement at different positions is allowed, the position of the pressure probe is convenient to modify, the experiment flexibility is enhanced, and comprehensive monitoring on the pressure distribution on the inner wall surface of the whole gas compressor is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of compressor experiment measurement, more specifically relates to a split type compressor casing for inner wall surface pressure measurement. BACKGROUND

[0002] As a common device in the industrial field, the performance and efficiency of the compressor are crucial to the operation of the entire system. During the design and use of the compressor, inner wall surface pressure measurement is an important experimental measurement task, which helps to understand the flow state and pressure distribution of the airflow inside the compressor. However, due to the irregular shape of the compressor casing, there are interference problems during processing, and the punching of local areas is limited. At the same time, it is limited by processing technology and cost. It is an important problem for the current compressor inner wall surface pressure measurement to realize high-precision pressure detection hole at low cost.

[0003] Traditional compressor casings generally adopt a monolithic structure, and the pressure holes are directly punched on the compressor casing. However, due to the complex shape of the compressor casing, it is difficult to punch in some local areas, which leads to the inability to achieve comprehensive pressure measurement. At the same time, due to the high density of the pressure holes, interference phenomena are easily generated during the connection of the rigid pressure pipes, affecting the accuracy and reliability of the measurement.

[0004] Therefore, how to provide a split type compressor casing for inner wall surface pressure measurement is a problem that needs to be solved by those skilled in the art. SUMMARY

[0005] Therefore, the purpose of the utility model is to solve the problem that due to the complex shape of the compressor casing, it is difficult to punch in some local areas, which leads to the inability to achieve comprehensive pressure measurement.

[0006] In order to solve the above problems, the technical scheme of the utility model is a split type compressor casing for inner wall surface pressure measurement, which comprises:

[0007] A compressor base shell, a plurality of first pressure holes are arranged on the middle base surface thereof;

[0008] A compressor flow channel having a base and a flow channel pipe connected thereto, the base is detachable on the middle base surface of the compressor base shell through a connecting part, the base has a second pressure hole corresponding to the position of the first pressure hole; a plurality of third pressure holes arranged in the arc transition zone between the base and the flow channel pipe, and a plurality of fourth pressure holes arranged on the flow channel pipe;

[0009] Wherein, the pressure leading end of the pressure leading hose can be detachably connected with the second pressure hole, the third pressure hole and the fourth pressure hole.

[0010] In order to avoid the influence of the pressure leading hose connection on the normal operation of the blade, the second pressure leading hole, the third pressure leading hole and the fourth pressure leading hole are all stepped holes.

[0011] According to the split type compressor casing, the pressure leading end of the pressure leading hose is a metal pipe with an external thread structure, and the rear extending part is a hose; the top hole of the stepped hole is an internal thread hole capable of cooperating with the external thread structure, and the bottom hole is a through hole structure.

[0012] According to the split type compressor casing, the base and the middle base surface of the compressor base casing are both provided with connecting screw holes, the connecting part includes a bolt and a gasket, and the bolt is connected by penetrating the connecting screw hole through the gasket.

[0013] According to the split type compressor casing, the second pressure leading hole and the fourth pressure leading hole are both distributed at equal angles with the axis of the flow channel pipe as the center.

[0014] According to the split type compressor casing, the second pressure leading hole and the fourth pressure leading hole are both distributed at 60-degree angles with the axis of the flow channel pipe as the center.

[0015] According to the split type compressor casing, a plurality of the third pressure leading holes are distributed at equal angles with the axis of the flow channel pipe as the center, and are formed in multiple columns in the radial direction of the flow channel pipe.

[0016] According to the split type compressor casing, a plurality of the third pressure leading holes are distributed at 30-degree angles with the axis of the flow channel pipe as the center, and are formed in multiple columns in the radial direction of the flow channel pipe.

[0017] In order to solve the interference phenomenon in the connection process due to the high density of the pressure leading holes, according to the split type compressor casing, the third pressure leading hole is distributed radially with the axis of the flow channel pipe as the center, and the hole position of the odd number hole and the hole position of the even number hole have a phase difference.

[0018] According to the split type compressor casing, the phase difference is 10°-20°.

[0019] According to the above technical solution, compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. Increased measurement flexibility: The utility model discloses a split type detachable structure, avoids the problem that the air compressor base shell interference hole causes the local area to be unable to punch during the punching process, by setting multiple pressure guide holes on the air compressor base shell and flow channel pipe first, then assembling together, the utility model discloses allow pressure measurement at different positions, convenient to modify pressure probe position, enhance the experimental flexibility, thereby ensure the overall monitoring of the pressure distribution of the inner wall of the whole air compressor. This design makes it possible to realize accurate pressure data acquisition even in complex geometry.

[0021] 2. Reduce interference phenomenon: The traditional rigid pressure guide pipe can produce interference in the densely arranged pressure guide hole, which limits the number and position of the measurement points. The utility model discloses a metal pipe pressure guide end with external thread structure and hose, which effectively avoids such interference, so that the pressure guide hose can be smoothly connected to each measurement point.

[0022] 3. In order to avoid the influence of the normal operation of the blade after the connection of the pressure guide hose, the second pressure guide hole, the third pressure guide hole and the fourth pressure guide hole are set as stepped holes, the external thread structure is installed with the screw hole of the stepped hole, and the axial limiting effect of the pressure guide hose is achieved.

[0023] 4. Optimized pressure distribution: By arranging the second pressure guide hole and the fourth pressure guide hole at equal angles or a specific angle around the flow channel pipe axis, and arranging the third pressure guide hole, the utility model realizes a more uniform pressure monitoring network, which helps to more accurately capture the pressure change.

[0024] 5. Phase difference design: There is a phase difference between the odd holes and the even holes of the third pressure guide hole. This design can further refine the spatial resolution of pressure measurement, and more importantly, it can avoid the installation interference problem caused by too dense pressure guide holes. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model, and those skilled in the art can obtain other drawings according to the provided drawings without creating creative labor.

[0026] Figure 1 The structure diagram of the split type air compressor shell for inner wall surface pressure measurement provided by the utility model is shown in the figure.

[0027] Figure 2 The inside structure of the split type air compressor shell for inner wall surface pressure measurement provided by the utility model is shown in the figure.

[0028] Figure 3The utility model provides a kind of for inner wall surface pressure measurement split type compressor casing outside structure;

[0029] Figure 4 The structure diagram of compressor base shell is shown;

[0030] Figure 5 The structure diagram of compressor flow channel is shown;

[0031] Figure 6 The structure diagram of pressure lead hose is shown;

[0032] Figure 7 It is the sectional view of compressor flow channel. DETAILED DESCRIPTION

[0033] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0034] Because, traditional compressor casing generally adopts integral structure, and directly punches hole arrangement pressure lead hole on compressor casing. However, because the shape of compressor casing is complex, it is difficult to punch hole in some local areas, leading to unable to realize comprehensive pressure measurement.

[0035] In view of this, the utility model provides a kind of for inner wall surface pressure measurement split type compressor casing, referring to the drawings Figures 1-6 , comprising:

[0036] Compressor base shell 1, wherein the middle base surface is provided with a plurality of first pressure lead holes 11;

[0037] Compressor flow channel 4 has connected base 41 and flow channel pipe 43, the base 41 is detachable on the middle base surface of the compressor base shell 1 by connecting portion, the base 41 has the second pressure lead hole 42 corresponding with the position of the first pressure lead hole 11;Multiple third pressure lead holes 44 are arranged in the arc transition zone between the base 41 and the flow channel pipe 43, and multiple fourth pressure lead holes 45 are arranged on the flow channel pipe 43;

[0038] Wherein, the pressure lead end of the pressure lead hose 3 can be detachably connected with the second pressure lead hole 42, third pressure lead hole 44 and fourth pressure lead hole 45.

[0039] The utility model discloses a compressor base shell 1 and compressor flow channel 4 adopt split type detachable structure, avoided the hole site of compressor base shell interference in the process of punching, causes the problem that local area cannot punch, first according to test requirement, corresponding multiple pressure lead holes are set on the compressor base shell and flow channel pipe, then assemble together, the utility model discloses allow pressure measurement in different positions, and pressure lead hose is convenient for modifying pressure probe position, and the experimental flexibility is enhanced, thereby ensure the overall monitoring of the pressure distribution of the whole compressor inner wall.

[0040] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0041] The second pressure lead hole 42, the third pressure lead hole 44 and the fourth pressure lead hole 45 are all stepped holes. The pressure lead end of the pressure lead hose 3 is a metal pipe with an external thread structure, and the rearward extending part is a hose.

[0042] Due to the relatively close internal structure of the compressor, the distance between the blade and the compressor shell is relatively precise, in order to avoid the influence of the pressure lead hose on the normal operation of the blade after connection, the second pressure lead hole 42, the third pressure lead hole 44 and the fourth pressure lead hole 45 are arranged as stepped holes, and the external thread structure of the pressure lead hose 3 is installed with the threaded hole of the stepped hole, thereby achieving the axial limiting effect of the pressure lead hose.

[0043] The stepped hole design, the metal pipe pressure lead end with an external thread structure and the hose effectively avoid the interference phenomenon in the connection process caused by the excessive density of the hole site of the traditional rigid pressure lead pipe, so that the pressure lead hose can be smoothly connected to each measurement point.

[0044] The multiple first pressure lead holes 11 arranged on the middle base surface of the compressor base shell 1 are position corresponding holes with the second pressure lead hole 42 on the base 41 of the compressor flow channel 4, and in principle, the first pressure lead hole 11 and the second pressure lead hole 42 are kept sealed around, and the hole sites are communicated.

[0045] Referring to the drawings Figure 3 And 4The base 41 and the middle base surface of the compressor base 1 are staggered with the pressure introduction holes and correspondingly provided with connecting screw holes, the connecting part comprises a bolt 1 and a gasket, the bolt 1 is connected by penetrating the gasket into the connecting screw hole, thereby facilitating the installation of the base 41 and the compressor base 1. All installation positions need to be sealed and installed, and corresponding sealing gaskets can be provided on the corresponding planes of the base 41 and the compressor base 1, and corresponding hole positions are also provided on the sealing gaskets.

[0046] In the utility model, unless another definite provision and limitation, the terms "installation", "connection", "connection", "fixing" and the like terms should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be directly connected, or indirectly connected through an intermediate medium, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0047] In some embodiments of the utility model, the second pressure introduction hole 42 and the fourth pressure introduction hole 45 are equally angularly distributed with the axis of the flow channel pipe 43 as the center.

[0048] Specifically, the second pressure introduction hole 42 and the fourth pressure introduction hole 45 are angularly distributed with the axis of the flow channel pipe 43 as the center, which can be 60 degrees, and a more uniform pressure monitoring network is constructed, which helps to more accurately capture pressure changes.

[0049] In another embodiment of the utility model, a plurality of third pressure introduction holes 44 are equally angularly distributed with the axis of the flow channel pipe 43 as the center, and are formed in multiple columns in the radial direction of the flow channel pipe 43.

[0050] Specifically, a plurality of third pressure introduction holes 44 are angularly distributed with the axis of the flow channel pipe 43 as the center, which can be 30 degrees, and are formed in multiple columns in the radial direction of the flow channel pipe 43.

[0051] In this embodiment, a more uniform pressure monitoring network can also be constructed, which helps to more accurately capture pressure changes. However, in order to better install the pressure introduction hose, the utility model further provides the following embodiments, referring to the accompanying drawings Figure 5 And 7 :

[0052] The third pressure introduction hole 44 is radially distributed with the axis of the flow channel pipe 43 as the center, and the hole position of the odd hole and the hole position of the even hole have a phase difference, and the phase difference can be 10°-20°.

[0053] Wherein the hole position of the odd hole and the hole position of the even hole are relative, for example, Figure 7In the embodiment, 10 third pressure introduction holes 44 are arranged in the arc transition region between the base 41 and the flow channel pipe 43 at the cross section, and 5 hole positions at one side are taken as examples, which are hole position 1, hole position 2, hole position 3, hole position 4 and hole position 5, wherein the hole position 1, the hole position 3 and the hole position 5 are odd hole positions, and the hole position 2 and the hole position 4 are even hole positions, and there is a phase difference between the odd hole position and the even hole position, so that the installation interference problem caused by the dense pressure introduction holes is avoided.

[0054] It can be understood that for the odd hole position, the center position is rotated by a certain angle (for example, 15°) clockwise or counterclockwise relative to the center of the circle to form a phase difference.

[0055] For the even hole position, the center position is kept unchanged, or is rotated by the same angle (for example, 15°) counterclockwise or clockwise relative to the center of the circle to form the same phase difference as the odd hole position.

[0056] It is ensured that all the pressure introduction holes are uniformly distributed around the flow channel pipe 43, and the spacing between each pressure introduction hole is equal.

[0057] The design of the embodiment can further refine the spatial resolution of pressure measurement, while avoiding the installation interference problem caused by the dense pressure introduction holes.

[0058] During the test, each second pressure introduction hole 42, third pressure introduction hole 44 and fourth pressure introduction hole 45 needs to be connected with a pressure introduction hose and a pressure scanning valve to measure the internal flow field change of the compressor.

[0059] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification.

[0060] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and those skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A split compressor casing for internal wall surface pressure measurement, characterized by, The utility model relates to a compressor base (1) wherein a plurality of first pressure introduction holes (11) are arranged on the middle base surface; a compressor flow channel (4) having a base (41) and a flow channel pipe (43) connected to each other, the base (41) being detachably connected to the middle base surface of the compressor base (1) through a connecting part (2), the base (41) having a plurality of second pressure introduction holes (42) corresponding to the positions of the first pressure introduction holes (11); a plurality of third pressure introduction holes (44) arranged in an arc transition zone between the base (41) and the flow channel pipe (43); and a plurality of fourth pressure introduction holes (45) arranged on the flow channel pipe (43); wherein the pressure introduction end of a pressure introduction hose (3) can be detachably connected to the second pressure introduction holes (42), the third pressure introduction holes (44), and the fourth pressure introduction holes (45). The second pressure introduction holes (42), the third pressure introduction holes (44), and the fourth pressure introduction holes (45) are all stepped holes. The pressure introduction end of the pressure introduction hose (3) is a metal pipe with an external thread structure, and the backward extension part of the pipe is a hose; the top hole of the stepped hole is an internal thread hole capable of cooperating with the external thread structure, and the bottom hole is a through hole structure. The base (41) and the middle base surface of the compressor base (1) are both provided with corresponding connecting screw holes, and the connecting part (2) comprises a bolt (21) and a gasket (22), the bolt (21) being inserted into the connecting screw holes through the gasket (22) for connection.

2. The split compressor casing for internal wall pressure measurement of claim 1, wherein, The second pressure introduction holes (42) and the fourth pressure introduction holes (45) are equally angularly distributed with the axis of the flow channel pipe (43) as the center.

3. The split compressor casing for internal wall pressure measurement of claim 2, wherein, The second pressure introduction holes (42) and the fourth pressure introduction holes (45) are angularly distributed with the axis of the flow channel pipe (43) as the center at an angle of 60 degrees.

4. A split compressor casing for internal wall pressure measurement according to any one of claims 1-3, characterized in that, The plurality of third pressure introduction holes (44) are equally angularly distributed with the axis of the flow channel pipe (43) as the center, and are formed into multiple columns in the radial direction of the flow channel pipe (43).

5. A split compressor casing for internal wall pressure measurement according to any one of claims 1-3, characterized in that, The plurality of third pressure introduction holes (44) are angularly distributed with the axis of the flow channel pipe (43) as the center at an angle of 30 degrees, and are formed into multiple columns in the radial direction of the flow channel pipe (43).

6. The split compressor casing for internal wall pressure measurement of claim 5, wherein, The third pressure introduction holes (44) are radially distributed with the axis of the flow channel pipe (43) as the center, and there is a phase difference between the hole positions of odd-numbered holes and even-numbered holes.

7. A split compressor casing for internal wall pressure measurement according to any one of claims 1-3, characterized in that, The phase difference is 10-20 degrees.

8. A split compressor casing for internal wall pressure measurement according to any one of claims 1-3, characterized in that, ​ 9. A split compressor casing for internal wall pressure measurement according to any one of claims 1-3, characterized in that, ​ 10. The split compressor casing for internal wall pressure measurement of claim 9, wherein, ​

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