Positioning tool for mounting sinking probe of piston rod of reciprocating compressor

Abstract

The utility model relates to the technical field of compressor assembly, and discloses a positioning tool for installing a piston rod sinking probe of a reciprocating compressor, which comprises a positioning part and a calibration part, the positioning part is provided with a sleeving hole and an assembly hole, the sleeving hole is provided with an arc-shaped first hole wall, and the inner diameter of the first hole wall is equal to the outer diameter of a piston rod; the center line of the assembly hole passes through the circle center of the first hole wall; the positioning part is further provided with a positioning structure used for being assembled with the sinking probe in an axial stopping mode, the calibration part is provided with a datum plane, and the center line of the assembling hole is perpendicular to the datum plane. The center line of the assembly hole of the positioning part passes through the circle center of the first hole wall of the sleeving hole, and the center line of the sinking probe inevitably passes through the center of the piston rod, so that the theoretical extension line of the center of the sinking probe passes through the center of the section circle of the piston rod, and when the datum plane is horizontal, the assembly hole and the sinking probe in the assembly hole are inevitably positioned right above the piston rod; the positioning structure also ensures that the initial distance between the sinking probe and the piston rod is a set value.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressor assembly technical field, in particular to a kind of positioning tool for reciprocating compressor piston rod subsidence probe installation. BACKGROUND

[0002] Reciprocating compressor piston rod subsidence probe is displacement probe for monitoring reciprocating compressor piston support ring wear condition, it is installed in reciprocating compressor intermediate cylinder, piston rod is directly above (or directly below), monitoring probe and the distance of piston rod diameter.In initial installation, there is an initial distance between reciprocating compressor piston rod subsidence probe and piston rod, with the change of compressor operation, piston support ring wear, the distance between probe and piston rod becomes larger, the wear amount of piston support ring can be indirectly monitored by monitoring the change of distance (i.e.piston rod subsidence amount), when distance changes to set alarm value, alarm signal will be sent, avoid piston and cylinder direct contact friction and damage piston and cylinder.

[0003] Correctly install piston rod subsidence probe is the prerequisite of correct monitoring, theoretically, probe should be installed directly above piston rod, perpendicular to piston rod, i.e.the theoretical extension line of probe center should pass through piston rod cross section circle center, and be in line with piston rod cross section circle center, so that measurement value is accurate.

[0004] But when installing probe in actual field, the cross section center of piston rod cannot be accurately found, and the following incorrect installation conditions can occur:1, probe and piston rod are not perpendicular, deviate to one side;2, probe and piston rod are not perpendicular, and the circle center of piston rod is not in a straight line;3, probe and piston rod are perpendicular and in line, but probe is not directly above piston rod.

[0005] When installing incorrectly, it can lead to inaccurate measurement results, and false alarm often occurs, affecting compressor operation;In addition, because of the limitation of field operation space, the distance between probe and piston rod cannot be accurately measured by using ratchet or plug gauge, so the initial distance between them cannot be accurately set. UTILITY MODEL CONTENTS

[0006] The utility model aims at: provide a kind of positioning tool for reciprocating compressor piston rod subsidence probe installation, to solve the problem that probe is installed incorrectly in prior art, leading to inaccurate measurement results, and the initial distance cannot be accurately set.

[0007] In order to achieve the above object, the utility model provides a kind of positioning tool for reciprocating compressor piston rod subsidence probe installation, including positioning part and the calibration part being connected with the positioning part, the positioning part has for along the radial sleeve of piston rod and is sleeved in the sleeve hole outside piston rod and is used to assemble the assembly hole of subsidence probe, the sleeve hole has the first hole wall of circular arc, the inner diameter of the first hole wall is equal to the outer diameter of piston rod, the center line of the assembly hole passes through the center of the first hole wall;

[0008] The positioning part further has positioning structure, and the positioning structure is used to be axially stopped with subsidence probe assembly, and the calibration part has reference surface, and the center line of the assembly hole is perpendicular to the reference surface.

[0009] Preferably, the assembly hole is half hole opened towards the calibration part, and the inner diameter of the half hole is equal to the diameter of subsidence probe.

[0010] Preferably, the positioning structure is arranged at one end of the assembly hole close to the first hole wall, and the positioning structure is in abutment with the end surface of subsidence probe.

[0011] Preferably, the positioning structure is boss, the boss is semicircular structure, and the boss is coaxially arranged with the assembly hole.

[0012] Preferably, the boss has first wall surface and second wall surface, the first wall surface and the second wall surface are arranged in parallel and spaced apart along the center line of the assembly hole, the first wall surface is used to be in abutment with subsidence probe, the second wall surface is smoothly transitioned with the first hole wall, and the distance between the first wall surface and the second wall surface is 5mm.

[0013] Preferably, the calibration part includes main body section and reference section connected with the main body section, the main body section is connected with the positioning part, the reference section is in stepped structure with the main body section, and the end surface of the reference section towards the assembly hole forms the reference surface.

[0014] The utility model discloses a kind of positioning tools for reciprocating compressor piston rod subsidence probe installation compared with prior art, its beneficial effect is at: when installing subsidence probe, positioning part is radially sleeved on piston rod by sleeving aperture, radial sleeving is convenient to disassemble, the first hole wall of sleeving aperture is attached to the outer wall of piston rod, and operating personnel can install subsidence probe in assembly hole, since the center line of the assembly hole of positioning part passes through the center of the first hole wall of sleeving aperture, the center line of subsidence probe must pass through the center of piston rod, ensure that the theoretical extension line of the center of subsidence probe passes through the center of the section circle of piston rod, simultaneously, operating personnel can detect the levelness of reference surface, since reference surface is perpendicular to the center line of assembly hole, when reference surface is horizontal, assembly hole and its internal subsidence probe must be located directly above piston rod, in addition, after subsidence probe and positioning structure stop contact, the distance between subsidence probe and the center of sleeving aperture is determined value, guarantee the installation position, orientation of subsidence probe accurate, also guarantee that the initial distance between subsidence probe and piston rod is set value. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of the positioning tool for reciprocating compressor piston rod subsidence probe installation of the utility model;

[0016] Figure 2 It is Figure 1 The top view of the positioning tool for reciprocating compressor piston rod subsidence probe installation of

[0017] Figure 3 It is Figure 1 The assembly schematic diagram of the positioning tool for reciprocating compressor piston rod subsidence probe installation of in use with piston rod, subsidence probe.

[0018] In the drawing, 1, positioning part, 11, sleeving aperture, 111, first hole wall, 12, assembly hole, 13, positioning structure, 2, calibration part, 21, reference surface, 22, main body section, 23, reference section, 3, piston rod, 4, subsidence probe. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is described in further detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0020] The preferred embodiment of the positioning tool for reciprocating compressor piston rod subsidence probe installation of the utility model is as follows, Figures 1 to 3As shown, the positioning tool for mounting the piston rod subsidence probe of the reciprocating compressor includes a positioning part 1 and a calibration part 2. The positioning part 1 is used to position the relative position of the subsidence probe 4 and the piston rod 3, and the calibration part 2 is used to calibrate the arrangement angle of the positioning tool to ensure that the subsidence probe 4 is located directly above the piston rod 3. In this embodiment, the positioning part 1 and the calibration part 2 are integrally formed, which are made of stainless steel and have a roughness Ra of 1.6.

[0021] The positioning part 1 has a sleeving hole 11 which is used to be sleeved on the outside of the piston rod 3 in the radial direction of the piston rod 3. That is, when the positioning part 1 is assembled with the piston rod 3, the sleeving hole 11 is an open structure in the radial direction of the piston rod 3, and the piston rod 3 enters the sleeving hole 11 through the open structure. In this embodiment, the positioning part 1 is a semi-circular ring structure, and the sleeving hole 11 is a half hole to realize the radial sleeving of the positioning part 1 and the piston rod 3. The sleeving hole 11 is sleeved on the outside of the piston rod 3 in the radial direction of the piston rod 3, which facilitates the disassembly of the positioning tool and is simple to operate.

[0022] The sleeving hole 11 has a first hole wall 111 which is in a circular arc structure and has an inner diameter equal to the outer diameter of the piston rod 3. After the positioning part 1 is sleeved on the outside of the piston rod 3, the first hole wall 111 is in contact with the outer wall of the piston rod 3. Since the inner diameter of the first hole wall 111 is equal to the outer diameter of the piston rod 3, it can be ensured that the first hole wall 111 is in contact with the outer wall of the piston rod 3, and also ensures that the center of the sleeving hole 11 is the center of the piston rod 3, thereby limiting the position of the positioning part 1.

[0023] The positioning part 1 also has an assembly hole 12 which is used to mount the subsidence probe 4. The center line of the assembly hole 12 passes through the center of the first hole wall 111, that is, the theoretical extension line of the center line of the assembly hole 12 passes through the center line of the first hole wall 111. Since the center of the first hole wall 111 is on the center line of the piston rod 3, when the subsidence probe 4 is assembled in the assembly hole 12, the center line of the subsidence probe 4 passes through the center line of the piston rod 3, is in a straight line with the center of the cross section of the piston rod 3 and is perpendicular to the piston rod 3.

[0024] The positioning part 1 also has a positioning structure 13 which is used to stop the assembly of the subsidence probe 4 in the axial direction of the assembly hole 12. When the subsidence probe 4 is mounted in the assembly hole 12, the positioning structure 13 limits the axial position of the subsidence probe 4, ensures the axial position of the subsidence probe 4 after being mounted in the assembly hole 12, and also ensures that the distance between the subsidence probe 4 and the first hole wall 111 is a certain value, which is also the initial distance between the subsidence probe 4 and the outer wall of the piston rod 3.

[0025] The calibration part 2 has a reference surface 21, and the center line of the assembly hole 12 is perpendicular to the reference surface 21. When the subsidence probe 4 is installed, the operator can place a level on the reference surface 21, and after rotating the positioning tool circumferentially, the angle of the reference surface 21 can be adjusted. When the reference surface 21 is in the horizontal position, the subsidence probe 4 is directly above the piston rod 3, and the orientation of the subsidence probe 4 is accurate.

[0026] When the subsidence probe 4 is installed, the positioning part 1 is radially sleeved on the piston rod 3 through the sleeving hole 11, which is convenient for disassembly. The first hole wall 111 of the sleeving hole 11 is in contact with the outer wall of the piston rod 3. The operator can install the subsidence probe 4 in the assembly hole 12. Since the center line of the assembly hole 12 of the positioning part 1 passes through the center of the first hole wall 111 of the sleeving hole 11, the center line of the subsidence probe 4 must pass through the center of the piston rod 3, ensuring that the theoretical extension line of the center of the subsidence probe 4 passes through the center of the cross section of the piston rod 3. At the same time, the operator can detect the levelness of the reference surface 21. Since the reference surface 21 is perpendicular to the center line of the assembly hole 12, when the reference surface 21 is horizontal, the assembly hole 12 and the subsidence probe 4 inside it are necessarily located directly above the piston rod 3. In addition, after the subsidence probe 4 is in contact with the positioning structure 13, the distance between the subsidence probe 4 and the center of the sleeving hole 11 is a fixed value, which ensures the accurate installation position and orientation of the subsidence probe 4, and also ensures that the initial distance between the subsidence probe 4 and the piston rod 3 is a set value.

[0027] Preferably, the assembly hole 12 is a half hole opened towards the calibration part 2, and the inner diameter of the half hole is equal to the diameter of the subsidence probe 4.

[0028] The assembly hole 12 adopts a half hole structure and is opened towards the calibration part 2. When the subsidence probe 4 is installed, the subsidence probe 4 can be directly installed in the assembly hole 12 along its radial direction, which is convenient for installation and disassembly. The inner diameter of the half hole is equal to the diameter of the subsidence probe 4. After the subsidence probe 4 is in contact with the inner wall of the assembly hole 12, the center line of the subsidence probe 4 can be ensured to coincide with the center line of the assembly hole 12, thereby improving the installation accuracy of the subsidence probe 4.

[0029] Preferably, the positioning structure 13 is arranged at one end of the assembly hole 12 close to the first hole wall 111, and the positioning structure 13 is in abutment with the end surface of the subsidence probe 4.

[0030] The positioning structure 13 is in abutment with the end surface of the subsidence probe 4, which simplifies the assembly form of the positioning structure 13 and the subsidence probe 4. In this embodiment, the positioning structure 13 can also be the end portion of the assembly hole 12 away from the first hole wall 111, and the positioning structure 13 is in abutment with the outer edge of the subsidence probe 4.

[0031] Preferably, the positioning structure 13 is a boss, the boss is a semicircular structure, and the boss is coaxially arranged with the assembly hole 12.

[0032] The positioning structure 13 is in the form of a boss, and the boss is a semicircular structure, which can be formed by the hole bottom structure of the assembly hole 12, and is convenient to process.

[0033] Preferably, the boss has a first wall surface and a second wall surface, the first wall surface and the second wall surface are arranged in parallel and spaced along the center line of the assembly hole 12, the first wall surface is used to abut against the sinking probe 4, and the second wall surface is smoothly transitioned with the first hole wall 111, and the distance between the first wall surface and the second wall surface is 5 mm.

[0034] The first wall surface of the boss abuts against the sinking probe 4, and the second wall surface is smoothly transitioned with the first hole wall 111, so that the distance between the first wall surface and the second wall surface is the initial distance between the sinking probe and the piston rod 3 after the sinking probe is assembled, and the first wall surface and the second wall surface enable the operator to accurately control the distance between the sinking probe 4 and the piston rod 3. In the embodiment, the distance between the first wall surface and the second wall surface is 5 mm, and the size of 5 mm is the reference size when the existing sinking probe 4 is installed.

[0035] Preferably, the calibration part 2 comprises a main section 22 and a reference section 23 connected with the main section 22, the main section 22 is connected with the positioning part 1, the reference section 23 is in a stepped structure with the main section 22, and the reference section 23 forms the reference surface 21 towards the end surface of the assembly hole 12.

[0036] The main section 22 and the reference section 23 of the calibration part 2 are in a stepped structure, and the height difference at the stepped structure can be used to accommodate the level meter, so that the level meter is provided with an assembly space, and the use is convenient and the operation is simple.

[0037] In summary, the positioning tool for installing the sinking probe of the piston rod of the reciprocating compressor provided in the embodiment of the utility model, when the sinking probe is installed, the positioning part is radially sleeved on the piston rod through the sleeving hole, the radial sleeving is convenient to disassemble, the first hole wall of the sleeving hole is attached to the outer wall of the piston rod, the operator can install the sinking probe in the assembly hole, since the center line of the assembly hole of the positioning part passes through the center of the first hole wall of the sleeving hole, the center line of the sinking probe must pass through the center of the piston rod, so that the theoretical extension line of the center of the sinking probe passes through the center of the sectional circle of the piston rod, and meanwhile the operator can detect the levelness of the reference surface, since the reference surface is perpendicular to the center line of the assembly hole, when the reference surface is level, the assembly hole and the sinking probe inside the assembly hole must be located directly above the piston rod, in addition, after the sinking probe is in contact with the positioning structure, the distance between the sinking probe and the center of the sleeving hole is a determined value, so that the installation position and orientation of the sinking probe are accurate, and the initial distance between the sinking probe and the piston rod is also a set value.

[0038] The above merely is the preferred implementation form of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. A positioning tool for reciprocating compressor piston rod sink probe installation, characterized by, The positioning part (1) has a sleeving hole (11) for sleeving along the radial direction of the piston rod (3) outside the piston rod (3) and an assembly hole (12) for assembling the subsidence probe (4), the sleeving hole (11) has a first hole wall (111) in the shape of a circular arc, the inner diameter of the first hole wall (111) is equal to the outer diameter of the piston rod (3), and the center line of the assembly hole (12) passes through the center of the first hole wall (111). The positioning part (1) further has a positioning structure (13) for axially stopping assembling with the subsidence probe (4), and the calibration part (2) has a reference surface (21), and the center line of the assembly hole (12) is perpendicular to the reference surface (21).

2. The positioning tool for reciprocating compressor piston rod sink probe installation of claim 1, wherein, The assembly hole (12) is a half hole opened towards the calibration part (2), and the inner diameter of the half hole is equal to the diameter of the subsidence probe (4).

3. The positioning tool for reciprocating compressor piston rod sink probe installation of claim 2, wherein, The positioning structure (13) is arranged at one end of the assembly hole (12) close to the first hole wall (111), and the positioning structure (13) abuts against the end surface of the subsidence probe (4).

4. The positioning tool for reciprocating compressor piston rod sink probe installation of claim 3, wherein, The positioning structure (13) is a boss, which is a semicircular structure, and the boss is coaxially arranged with the assembly hole (12).

5. The positioning tool for reciprocating compressor piston rod sink probe installation of claim 4, wherein, The boss has a first wall surface and a second wall surface, the first wall surface and the second wall surface are arranged in parallel and spaced apart along the center line of the assembly hole (12), the first wall surface is used for abutting against the subsidence probe (4), the second wall surface is smoothly transitioned with the first hole wall (111), and the distance between the first wall surface and the second wall surface is 5mm.

6. The positioning tool for a probe installed to a piston rod sinking of a reciprocating compressor according to any one of claims 1 to 5, characterized by, The calibration part (2) includes a main body section (22) and a reference section (23) connected with the main body section (22), the main body section (22) is connected with the positioning part (1), the reference section (23) is in a stepped structure with the main body section (22), and the end surface of the reference section (23) towards the assembly hole (12) forms the reference surface (21).

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