TWI725232B - Mechanical seal construction practice device, construction practice method, construction practice system, and mechanical seal - Google Patents

Abstract

The present invention supports the construction practice of mechanical seals and can improve construction skills. Equipped with: a rotatable shaft part; a seal ring fixed to the shaft part and equipped with a first sliding surface; a first housing part (stuffing box) surrounding the seal ring; a second sliding part in contact with the first sliding surface of the seal ring A seat ring on the face and mounted on the shaft; and a second housing part (end plate) that is integrated with the first housing part to fix the aforementioned seat ring, and the seat ring is fixed to the second housing that is integrated with the first housing part The space part of the body (seat ring installation part) and the second sliding surface abuts against the first sliding surface. During construction practice, the shaft is rotated by manual operation, the first sliding surface and the second sliding surface Can be rotated relatively.

Description

Mechanical seal construction practice device, construction practice method, construction practice system, and mechanical seal Invention field

The present invention relates to a supporting technology for construction practice of mechanical seals and mechanical seals.

Background of the invention

Various rotating machines such as pumps and mixers have a sealing mechanism to prevent fluid leakage or foreign matter from entering the rotating shaft. The mechanical seal has: a sealing ring fixed to the rotating shaft to rotate; and a seat ring fixed to the housing side for covering the rotating shaft. The sealing ring contacts each sliding surface of the seat ring to rotate relative to each other. Although a certain degree of fluid leakage is structurally tolerable, when the sliding surface of the seat ring, seal ring, etc., wear out, or foreign objects enter, the fluid leakage will become significant, requiring regeneration or replacement of the mechanical seal. .

As shown in FIG. 25, in the vertical pump 200, a sealing mechanism 204 is provided on the upper side of the pump body 202 having an impeller, and a motor 206 is provided on the upper side of the sealing mechanism 204. To maintain or replace the mechanical seal built in the sealing mechanism 204, it is necessary to remove the housing 208 of the sealing mechanism 204 to expose the internal mechanism and remove the mechanical seal.

Regarding the practice of such sealing construction, what is known is that It is a practical device (for example, Patent Document 1) in which relevant technicians such as sealing construction acquire necessary skills. Although the practice device is about sealing construction, it is not about the construction practice of mechanical seals.

Advanced technical literature Patent literature

[Patent Document 1] Japanese Patent Laid-Open No. 2015-215473

Summary of the invention

Regarding the sealing mechanism or mechanical seals of rotating machines, technicians can learn from product manuals, handling manuals, lectures from educational institutions, etc., but the skills required to achieve the regeneration treatment or replacement of mechanical seals are not easy. In addition, through lectures or simple courses, it is possible to accurately grasp the phenomena that occur in the sealing mechanism due to year-round use, and obtain the necessary responses. It is impossible to be familiar with these skills. The on-site technicians are required to avoid pumps and other operations. Other unexpected events have their problems.

For example, in the sealing mechanism of the ballast water supply and drainage pumps loaded on tankers and other ships, regular maintenance will be carried out. If it is parked in an anchorage, it may be necessary to dispatch materials or technicians required for maintenance, but it may not always be possible to ensure that there are technicians with the necessary skills. In ships, it is extremely reasonable to repair the sealing mechanism on the sea while sailing, and it is also beneficial to repair the sealing mechanism before reaching the anchorage if it is considered that there is a problem with the sealing mechanism during the voyage. If maintenance is carried out during the voyage, it can be avoided to use Delayed supply and drainage of ballast water. Under these circumstances, technicians engaged in ship navigation need to acquire maintenance skills.

Since the mechanical seal is installed in a rotating machine such as a pump, even if the mechanical seal is replaced or regenerated, it is still troublesome to confirm the operating mechanism or function and immediately find out the cause of the situation. In addition to repairing or replacing mechanical seals, it is indispensable to understand the structure or function of the sealing mechanism, and to predict the cause of the situation. The skills, experience or experience are indispensable.

At the beginning of assembly, even if the sealing mechanism or mechanical seal is highly reliable, it is necessary to avoid damaging the function of the sealing mechanism or mechanical seal due to maintenance, and grasp the correct construction sequence of the mechanical seal through experience and grasp the prediction The abnormal phenomenon, etc., to improve the construction technology inherited from these is also indispensable in maintaining the function of the sealing mechanism or mechanical seal and maintaining its reliability.

Therefore, the purpose of the present invention is to support the construction practice of mechanical seals in view of the above-mentioned problems, so as to improve construction skills.

In addition, another object of the present invention is to provide a mechanical seal that can easily confirm the state of wear caused by practice or long-term general use.

In order to achieve the above-mentioned object, a side surface of the construction practice device for a mechanical seal according to the present invention has: a rotatable shaft portion; a seal ring fixed to the shaft portion and having a first sliding surface; a first housing portion surrounding The seal ring; the seat ring, which has the first sliding surface of the seal ring The second sliding surface that is in contact and is installed on the shaft; and the second housing part is integrated with the first housing part to fix the seat ring; the seat ring is fixed to the first housing part integrated with the The space part of the second housing part, and the second sliding face part abuts on the first sliding face part. During the construction practice, the shaft part is rotated manually by manual operation, and the first sliding face part is in contact with the first sliding face part. 2 Sliding the face can be relatively rotated.

The construction practice device for the mechanical seal may further include a handle part that can be inserted and removed from the shaft part, and the shaft part can be rotated by the handle part installed on the shaft part.

The construction practice device for the mechanical seal described above may further have: a shaft support part fixed to the first housing part; a first bearing part mounted on the shaft support part, and may be on one end side of the shaft part Rotatably supporting the shaft portion; and a second bearing portion, mounted on the shaft supporting portion, and rotatably supporting the shaft portion at the middle portion of the shaft portion, the construction practice device of the mechanical seal can measure at least the shaft portion Any of the axial deflection and clearance.

In the construction practice device for the mechanical seal, the second housing portion may further have a third sliding surface portion in contact with the shaft portion.

In the construction practice device for the mechanical seal, the seal ring may have a support ring portion fixed to the shaft portion, and the support ring portion may have: a spring that urges the seal ring toward the seat ring; and fixed to The fixing element of the reference position on the shaft portion of the seal ring.

The construction practice device for the mechanical seal may further have: a first port, which is provided in the first housing part and communicates with the seal Ring; and the second port, provided in the second housing part, and connected to the seat ring.

In the construction practice device for the mechanical seal, further, one or both of the first housing portion and the second housing portion are part or all of a light-transmitting member that can be seen.

In the construction practice device for the mechanical seal described above, it further has a stand portion for supporting or movably supporting the first housing portion or the shaft support portion.

In order to achieve the above object, one side of the construction practice method of the mechanical seal according to the present invention includes the following steps: fixing a seal ring having a first sliding surface portion to the shaft portion; and providing a first sealing ring to surround the seal ring. The housing part; the seat ring having the second sliding surface part contacting the first sliding surface part of the sealing ring is installed on the shaft part; the seat ring is installed in the space part of the second housing part, and the The second housing part is integrated with the first housing part; and the first sliding face part and the second sliding face part are relatively rotated on the shaft part by the handle part or not being installed with the handle part.

In the construction practice method of the mechanical seal, it further includes the following steps before the installation of the seal ring: measuring the eccentricity of the shaft, the clearance of the shaft, and the angle or concentricity of the adjacent members of the shaft Either one or more than two.

In the construction practice method of the mechanical seal described above, it further includes the steps of: installing a seal ring and a shaft portion on the first housing portion, and installing a foreign object on at least the sliding surface of the seal ring.

In the construction practice method of the above-mentioned mechanical seal, it further includes the step of: making the pressurized fluid flow from the first port located in the first housing portion or located in the Any one of the second ports of the second housing part flows in, and the outflow or pressure of the pressurized fluid flowing out from the first port or the second port is detected.

In order to achieve the above-mentioned object, one side of the construction practice system for mechanical seals according to the present invention is characterized by having: a sensor part including: for detecting the pressure between the seat ring and the seal ring provided on the shaft part State sensor, a sensor for detecting the deflection of the shaft, a sensor for detecting vibration or sound generated by the rotation of the shaft, and a sensor for detecting the torque applied to the shaft Any one of the sensors; the processing element, which has the processing function of receiving the sensor signal from the aforementioned sensing part and at least converting the sensor signal into image information; and the information prompt element, at least by the image information Prompt the processing output of the aforementioned processing element.

In order to achieve the above-mentioned object, one side of the mechanical seal according to the present invention is a mechanical seal having at least a seat ring or a seal ring, and the hardness is higher than the hardness of the seal ring member for the actual machine or the seat ring member for the actual machine The low-wear material is used for the sliding member of at least the sliding surface part of any one of the seat ring or the sealing ring, and the surface properties of the sliding surface are changed during practice.

In order to achieve the above object, one side of the mechanical seal according to the present invention is a mechanical seal having at least a seat ring or a seal ring, and a sliding member including at least the sliding surface of any one of the seat ring and the seal ring includes The display layer that expresses the degree of wear based on wear, and the degree of wear of the sliding surface can be expressed by the change in the shape of the display layer.

Construction practice device of mechanical seal according to the present invention Or the construction practice method, the following effects can be obtained.

(1) The mechanical seals installed in rotating machines such as pumps can be separated from the rotating machines, and the necessary construction training can be carried out by actual machine construction, which can contribute to the realization of a safe and highly reliable sealing mechanism.

(2) It can feel the rotation, vibration, torque, etc. of the mechanical seal to make the trainee feel physically.

(3) It can simulate unexpected events such as anomalies or failures in the actual machine, and can repeat cleaning, installation, action confirmation, disassembly, etc., which can improve the skills of construction technicians.

(4) Experiential learning can be implemented for constructions that can be forced to produce abnormalities, or use abnormal components, etc., which are also difficult to implement in real machines.

According to the construction practice system of the mechanical seal of the present invention, any of the following effects can be obtained.

(1) Numericalize axial deflection, vibration, abnormal sound, strain, etc., which can be used as numerical information prompts.

(2) The trainee can compare the prompt information and feelings of the information prompt component, which can realize effective implementation training.

According to the mechanical seal of the present invention, any of the following effects can be obtained.

(1) After the rotation operation, the wear state of the mechanical seal can be visually confirmed, and the occurrence of wear and its countermeasures can be learned.

(2) There is no need to measure the degree of wear and other procedures, and the wear of the mechanical seal can be confirmed by the change of the indicator material.

2: Construction practice device for mechanical seals

4: Shaft

6: Mechanical seal department

8: Sealing ring

8-1: Seal ring body

8-2: Intermediate ring

8-3: Support ring

10: Shell

10-1: The first shell part/stuffing box

10-2: The second housing part

12: Seat ring

14-1: The first sliding face

14-2: 2nd sliding face

14-3: 3rd sliding face

16: Through hole

18: O-ring

20: Bolt

21: Bushing

22: Ministry of Space

24: flange

26, 26-1, 26-2: Substrate components

28: Bolt

30: Handle installation department

32: Handle

34: Corner post

36: Fitting part

38: crank

40: Operation Department

42: Shaft support

44: Pillar

46-1: The first bearing part

46-2: The second bearing part

48: fixing screw

50: Guiding Department

52: fixing screw

54: fixing screw

56: Frame Department

58: Base

60: Top plate

62: Pillar

64: Bolt

66: Ground

68: casters

70: Mechanical seal installation department

72: Rotating support part

74: Support hole

76: Through hole

78: Shaft washer setting part

80: Window

82-1, 82-2: Shaft washer

84: Through hole

86: Guide pin screw hole

88: Drive pin screw hole

90: Spring insertion part

92: guide pin

94: drive pin

96: Spring

98: Through hole

100: Drive pin installation department

102: Spring insertion part

103: Screw part

104: Positioning bolt hole

106: positioning bolt

108: gap

110: Small diameter ring part

112: O-ring setting part

114: Through hole

116: Fitting protrusion

118: engagement protrusion

120: side wall

122-1: Port 1

122-2: Port 2

122-3: Port 2

124: Bolt through hole

126: screw hole

128: Through hole

129: Bolt through hole

130,131: Ministry of Space

132: Seat ring installation department

134: Fitting recess

135: Straightedge

136: Marking Line

138: Writing Utensils

140: Measurer

142, 146: Locking tools

144: Interval

148: foreign body

150, 150-1, 150-2: dial gauge

152: Support arm

154: Contact

156, 156-1, 156-2: support member

158: Pressurized fluid

160-1, 160-2: Measuring equipment

162: Stage

164: Large diameter part

170: Construction Practice System

172: Information Processing Department

174: Information Reminder Department

176: Sensing Department

176-1, 176-2, 176-3, 176-4: Sensor

178: Data Collection Department

180: Control Department

182: Memory Department

184, 186: Sliding face layer

188: Presentation layer

200: Vertical pump

202: Pump body

204: Sealing Mechanism Department

206: Motor

208: Shell

d1: Rotation diameter

O, Om: axis center

W1: exposed width

Fig. 1A shows the mechanical seal part of the mechanical seal construction practice device of the first embodiment, and B shows the handle part attached to the shaft part.

Fig. 2 is a construction practice device showing a mechanical seal having a shaft support part according to a second embodiment.

Fig. 3A shows the construction practice device of the mechanical seal of Example 1, and B shows the caster part.

4A is a plan view showing the shaft portion, and B is a side view showing the shaft portion.

Fig. 5A is an exploded cross-sectional view showing the seal ring part, and B is a cross-sectional view showing the support ring part cut at a position different from the spring mounting part.

Fig. 6 is a cross-sectional view showing a seat ring portion.

7A is a plan view showing the first housing portion, B is a cross-sectional view taken along the line VIIB-VIIB, and C is a cross-sectional view taken along the line VIIC-VIIC.

A of FIG. 8 shows a plan view of the second housing part, B is a cross-sectional view of A along the line VIIIB-VIIIB, and C is a cross-sectional view of A along the line VIIIC-VIIIC.

Fig. 9A shows the marking of the second embodiment. Step B shows the shaft portion marked with the marking, and C shows the measurement step of measuring the end of the support ring of the seal ring from the marking.

A and B of Fig. 10 show the steps of fixing the seal ring.

Fig. 11A shows the installation steps of the first and second housing parts, B shows the interval confirmation steps between the first and second housing parts, and C shows the temporary fixing steps of the bolts.

Figure 12 A shows the locking steps of the bolts, and B shows the locking of the bolts Tight order.

Fig. 13 shows the operation confirmation procedure of the mechanical seal part.

Fig. 14 shows the steps of confirming the incorporation of foreign matter.

15A shows the measurement procedure of the lateral deflection of the shaft of the third embodiment, and B shows the measurement position and size.

A of FIG. 16 shows the measurement procedure of the perpendicularity of the 2nd housing part, and B shows the measurement position and size.

A of FIG. 17 shows the measurement procedure of the concentricity of the second housing part, and B shows the measurement position and size.

A of Fig. 18 shows the confirmation step of the clearance of the shaft part, and B shows the confirmation position and size.

Fig. 19 shows the leak confirmation procedure of the mechanical seal part of Example 4.

Fig. 20 is a diagram showing the shaft portion with a stepped portion of the fifth embodiment.

Fig. 21 is a construction practice device showing a mechanical seal using a transparent member in the first and second housing parts of the sixth embodiment.

Fig. 22 shows the construction practice system of the mechanical seal of Example 7.

Figures 23A and B show the mechanical seal part of Example 8.

24A and B show the mechanical seal part of Example 9.

Figure 25 is a perspective view showing a pump with a general sealing mechanism.

Detailed description of the preferred embodiment [First Embodiment]

<Mechanical Seals Department>

Fig. 1A shows the mechanical seal part of the mechanical seal construction practice device of the first embodiment. The present invention is not limited to the configuration shown in FIG. 1. The construction practice device 2 of this mechanical seal is referred to as the practice device 2 in the following list. The training device 2 has a shaft part 4 and a mechanical seal part 6. The shaft part 4 corresponds to a rotating shaft of a rotating machine such as a pump.

The mechanical seal part 6 constitutes an apparatus main body part of the training apparatus 2 and is an example of a shaft seal mechanism part with respect to the shaft part 4. The mechanical seal part 6 has a seal ring 8, a housing 10 and a seat ring 12.

The seal ring 8 has a first sliding surface portion 14-1, and is fixed to the reference position of the shaft portion 4 as a fixed ring. The sliding surface of the sliding surface portion 14-1 is arranged in a direction orthogonal to the axis center O of the shaft portion 4. The seal ring 8 is covered on the side of a stuffing box (stuffing box) 10-1 which is a first housing part of the housing 10.

The seal ring 8 has a seat ring 12 which is a movable ring on the side of the sliding surface portion 14-1. The seat ring 12 has a second sliding surface portion 14-2 in contact with the sliding surface portion 14-1, and is installed on the shaft portion 4. The inner diameter of the through hole 16 of the seat ring 12 is set to be larger than the outer diameter of the shaft portion 4. The sliding surface part 14-2 is arranged in a direction orthogonal to the axial center O of the shaft part 4 similarly to the sliding surface part 14-1, and is parallel to the sliding surface part 14-1.

The seat ring 12 is fixed to the end plate 10-2 as a second housing part integrated with the stuffing box 10-1. Two O-rings 18 are installed on the seat ring 12 in the width direction to seal the seat ring 12 and the end plate 10-2. The end plate 10-2 is fixed to the stuffing box 10-1 by a plurality of bolts 20, and a housing 10 is composed of the combined stuffing boxes 10-1 and 10-2. The bushing 21 is integrally provided on the end plate 10-2 as a sealing member having a third sliding surface portion 14-3 in contact with the peripheral surface of the shaft portion 4. In other words, By the combination of the stuffing box 10-1 and the end plate 10-2, the seat ring 12 is restricted to the end plate 10-2 side, forming a space 22 sealed by the sliding surface portions 14-1, 14-2, and 14-3.

In this embodiment, the stuffing box 10-1 has a flange 24, and the flange 24 is fixed to the base plate member 26 by a plurality of bolts 28. Thereby, the mechanical seal part 6 is fixed to the substrate member 26.

<Handle installation part>

At the end portion of the shaft portion 4, as shown in FIG. 1B, there is a handle installation portion 30, and the handle portion 32 can be inserted into and withdrawn from the handle installation portion 30. The handle installation portion 30 has a corner post portion 34 formed thinner than the shaft portion 4, and a fitting portion 36 fitted to the corner post portion 34 is provided on a crank 38, and the crank 38 is arranged in a direction crossing the shaft portion 4. The crank 38 has an operation part 40 parallel to the shaft part 4.

During construction practice, if the handle portion 32 is attached to the shaft portion 4, and a torque in the circumferential direction of the shaft portion 4 is applied to the shaft portion 4 from the operating portion 40, the shaft portion 4 can be manually operated to rotate.

<Construction Practice>

In the construction practice of the mechanical seal, by using the mechanical seal part 6 already described, the following steps are included:

A) Preparation steps for installation of seal ring 8

B) Positioning steps of sealing ring 8

C) Installation steps of seat ring 12

D) Fixing steps of housing 10

E) Rotation step of shaft part 4.

A) Preparation steps for installation of seal ring 8

After the stuffing box 10-1 is mounted on the shaft portion 4, an indicator line indicating the reference position of the seal ring 8 is marked on the shaft portion 4 with the stuffing box 10-1 as a reference.

B) Positioning steps of sealing ring 8

The seal ring 8 is installed on the shaft portion 4 and the seal ring 8 is positioned at the reference position described above.

C) Installation steps of seat ring 12

When installing the seat ring 12, prepare the seat ring 12 to be integrated with the end plate 10-2. The seat ring 12, which has been integrated with the end plate 10-2, is installed on the shaft portion 4 together with the end plate 10-2.

D) Fixing steps of housing 10

The end plate 10-2 is fixed to the stuffing box 10-1 by bolts 20, so that the stuffing box 10-1 and the end plate 10-2 are combined and assembled into a shell 10.

E) Rotation steps of shaft 4

The shaft portion 4 is rotated, and the seal ring 8 integrated with the shaft portion 4 is rotated. Thereby, the seal ring 8 and the seat ring 12 can be relatively rotated on the sliding surface portions 14-1, 14-2.

In addition, the handle portion 32 is attached to the shaft portion 4, and the shaft portion 4 is rotated by the handle portion 32, and the seal ring 8 integrated with the shaft portion 4 is rotated. Thereby, the seal ring 8 and the seat ring 12 can be relatively rotated between the sliding surface parts 14-1 and 14-2.

<Effects of the first embodiment>

(1) The physical experience is caused by the assembly, disassembly, cleaning, position adjustment and other operations of the mechanical seal part 6 of a rotating machine such as a pump, or the relative rotation of the sliding surface 14-1, 14-2 of the mechanical seal part 6 The sliding, etc., can improve the construction skills of mechanical seals.

(2) The shaft part 4 can be manually operated to rotate before the handle part 32 is installed. By operating the shaft part 4, the practitioner feels a sense of torque, sliding or rotation.

(3) If the handle portion 32 is installed on the shaft portion 4, the state before and after installation of the handle portion 32 can be compared to obtain a physical experience that cannot be obtained in a real machine, and useful construction practice can be carried out.

(4) Unlike the actual device, the training device 2 can practice assembly, disassembly, cleaning, position adjustment, etc. repeatedly, and can practice operation functions that cannot be performed on the actual device.

[Second Embodiment]

Fig. 2 shows the shaft support part of the construction practice device for the mechanical seal according to the second embodiment.

A shaft support part 42 is provided on the lower side of the stuffing box 10-1 located in the mechanical seal part 6. A plurality of pillar portions 44 are provided on the shaft support portion 42 to have substrate members 26-1 and 26-2 arranged in parallel. The first bearing portion 46-1 is fixed to the upper surface of the substrate member 26-1 by a plurality of fixing screws 48, and the second bearing portion 46-2 is fixed to the substrate member 26-2 by a plurality of fixing screws 48 lower surface. The shaft portion 4 is inserted into the bearing portions 46-1 and 46-2, the bearing portion 46-1 supports the end side of the shaft portion 4, and the bearing portion 46-2 supports the middle portion of the shaft portion 4.

Each bearing portion 46-1, 46-2 is provided with a guide portion 50 for guiding the shaft portion 4, a fixing screw 52 is provided on the bearing portion 46-1, 46-2 side, and a fixing screw 54 is provided on the guide portion 50, To fix the shaft 4. A clearance is provided between each bearing portion 46-1, 46-2 and the shaft portion 4, but it can be tightened by fixing screws 52, 54 The shaft part 4 is fixed to each bearing part 46-1, 46-2.

According to the shaft support portion 42, if the fixing screws 52, 54 are loosened to form a clearance between the bearing portions 46-1, 46-2 and the shaft portion 4, the shaft portion 4 can arbitrarily shift its shaft center O To the shaft center Om, the shaft 4 can be forced to deflect.

The axial deflection or clearance of the shaft 4 can be measured by fixing a measuring device such as a dial gauge to the stuffing box 10-1. In addition, the level of the stuffing box 10-1 or the angle formed by the shaft 4 and the stuffing box 10-1 can also be measured in the same way.

<Effects of the second embodiment>

(1) The relative positional relationship between the shaft portion 4 supported by the bearing portions 46-1, 46-2 and the bearing portions 46-1, 46-2 installed on the base plate members 26-1, 26-2 can be adjusted arbitrarily, and it can be forced The deflection of the shaft 4 is generated, or the desired deflection is set. The practitioner entity can feel the deflection, and the deflection amount can be measured by the measuring machine.

(2) The substrate members 26-1, 26-2 are supported by a plurality of support portions 44, and the shaft portion 4 or the bearing portions 46-1, 46-2 can be visually confirmed from between the support portions 44.

(3) It is possible to visually confirm the inclination or deflection of the shaft portion 4 that is forced or set by the shaft portion 4 from between the pillar portions 44, contact the shaft portion 4, and operate the fixing screws 52, 54 to set the desired deflection , Adjust to eliminate its deflection.

Example 1

Figures 3 to 8 show the structure of the practice device 2 and its parts of the first embodiment. The training device 2 simulates a mechanical seal and a sealing mechanism of a rotating machine installed in a real machine, but it is not limited to the content of a known real machine. In the real In the training device 2 of the first embodiment, as shown in A of FIG. 3, the shaft support portion 42 and the mechanical seal portion 6 are provided on the stand portion 56. The base portion 56 is provided with a base portion 58 and a top plate portion 60, and the top plate portion 60 is supported by the base portion 58 by a plurality of pillar portions 62. What is necessary is just to use an angle material etc. for the pillar part 62, for example. The base member 26-1 of the shaft support portion 42 is fixed to the top plate portion 60 by a plurality of bolts 64 to maintain the level. The base 58 is fixed to the floor 66 of the training room by foot bolts or the like.

If a plurality of casters 68 are provided in the frame part 56 as shown in B of FIG. 3, the training device 2 can be moved to a desired position or transported outside the training room.

<Shaft 4>

A and B of FIG. 4 are an example of the display shaft 4. From the upper end to the lower end of the shaft portion 4, there are a handle installation portion 30, a mechanical seal installation portion 70, and a rotation support portion 72. As shown in A of FIG. 4, the handle mounting portion 30 is formed in a prism shape so as to be engaged with the fitting portion 36 of the handle portion 32. The handle installation portion 30 is formed with a supporting hole 74 for supporting other members. The mechanical seal installation portion 70 and the rotation support portion 72 are cylindrical, and the diameter of the mechanical seal installation portion 70 is larger than that of the rotation support portion 72. The rotation support portion 72 is fixed to the bearing portions 46-1 and 46-2 of the shaft support portion 42.

<Seal ring 8 of mechanical seal part 6>

The seal ring 8 is provided with a seal ring body portion 8-1 having a sliding surface portion 14-1, an intermediate ring portion 8-2, and a support ring portion 8-3, as shown in A of FIG. 5.

The seal ring body portion 8-1 is cup-shaped, and the through hole 76, the shaft washer installation portion 78, and the plurality of window portions 80 are provided at predetermined intervals. The shaft portion 4 is penetrated through the through hole 76, and the shaft washers 82-1 and 82-2 are combined to be installed on the shaft washer. Part 78, and inserted into a part of the middle ring part 8-2.

The intermediate ring portion 8-2 is called a compression expansion ring, and is arranged between the seal ring body portion 8-1 and the support ring portion 8-3. In the intermediate ring portion 8-2, the shaft portion 4 penetrates through the through hole 84, and has a plurality of guide pin screw holes 86, driving pin screw holes 88, and spring insertion portions 90 on the side wall side. Each guide pin 92 is installed in the guide pin screw hole 86, and is exposed from each window portion 80 of the seal ring body portion 8-1. A drive pin 94 as a fixing element installed with the support ring portion 8-3 is installed in each drive pin screw hole 88. The front end of the spring 96 is inserted into each spring insertion portion 90.

The support ring portion 8-3 is a support member that supports the seal ring body portion 8-1 with the intermediate ring portion 8-2 interposed therebetween, and is fixed to the reference position of the shaft portion 4. In the support ring portion 8-3, the shaft portion 4 penetrates through the through hole 98, and a plurality of drive pin installation portions 100 and spring insertion portions 102 are provided on the side wall side. The drive pin 94 is installed in the drive pin installation portion 100, and the screw portion 103 protruding from the drive pin installation portion 100 is installed in the drive pin screw hole 88 of the intermediate ring portion 8-2. The other end of the spring 96 is inserted into each spring insertion portion 102, and each spring 96 is held in the two spring insertion portions 90, 102 in a compressed state in response to the locking of the drive pin 94. By the restoring force of each spring 96 and the degree of locking of the drive pin 94, the width of the support ring portion 8-3 and the seal ring body portion 8-1 in the axial direction is adjusted.

In the support ring portion 8-3, as shown in FIG. 5B, a positioning bolt screw hole 104 is provided, and the positioning bolt 106 is installed in the positioning bolt screw hole 104. The positioning bolt 106 is a fixing element of the support ring portion 8-3 that sets the support ring portion 8-3 at the reference position of the shaft portion 4 and fixes it. The seal ring main body portion 8-1 connected to the support ring portion 8-3 is fixed to the reference position of the shaft portion 4 together with the support ring portion 8-3 by the positioning bolt 106. The installation position setting of the positioning bolt 106 In an angular position different from the driving pin installation portion 100 and the spring insertion portion 102.

<Mechanical seal part 6>

FIG. 6 is a cross-section showing the seat ring 12 provided on the shaft portion 4 together with the seal ring 8. The inner diameter of the through hole 16 of the seat ring 12 is larger than the outer diameter of the shaft portion 4, and a gap 108 is set between the through hole 16 and the shaft portion 4. The seat ring 12 has a small-diameter annular portion 110 on the side of the seal ring, and the end surface of the small-diameter annular portion 110 is a sliding surface 14-2. The outer diameter and width of the small-diameter annular portion 110 are smaller than those of the sliding surface portion 14-1 of the seal ring 8. Therefore, the contact area between the sliding surface portion 14-2 and the sliding surface portion 14-1 depends on the sliding surface portion 14-2. In the seat ring 12, two O-ring installation portions 112 are provided in the width direction to provide an O-ring 18, and the O-ring 18 brings the seat ring 12 into a close contact state in the end plate 10-2.

<Stuffing Box 10-1>

Figure 7A shows the plane shape of the stuffing box 10-1, Figure 7B shows the VIIB-VIIB line cross section of A, and Figure 7C shows the VIIC-VIIC line cross section of A. The stuffing box 10-1 has a through hole 114 in the center, an engaging protrusion 118 on the side of the fitting protrusion 116 and the flange 24, and a first port 122-1 on the side of the side wall 120. The seal ring 8 is provided in the through hole 114 together with the shaft portion 4. The fitting protrusion 116 is integrated with the end plate 10-2. The engaging protrusion 118 is engaged with the substrate member 26 (FIG. 1) side. The port 122-1 passes through the through hole 114, and leads to the surrounding space of the seal ring 8 in the through hole 114 and the small-diameter annular portion 110 of the seat ring 12. The flange 24 has a plurality of bolt through holes 124 through which the bolt 28 passes. On the top of the side wall 120, as shown in C of FIG. 7, there are a plurality of screw holes 126, and the bolts 20 passing through the end plate 10-2 are installed in the screw holes 126.

<End plate 10-2>

Fig. 8A shows the plane shape of the end plate 10-2, Fig. 8B shows the VIIIB-VIIIB line cross section of A, and Fig. 8C shows the VIIIC-VIIIC line cross section of A. The end plate 10-2 is a cylindrical body whose outer peripheral surface has the same diameter, and has a through hole 128, a bolt through hole 129, space portions 130, 131, a seat ring mounting portion 132, and a fitting recess 134. The through hole 128 is formed in the sliding surface portion 14-3 of the bushing 21. The bushing 21 may be the same or different from the member of the end plate 10-2, for example, formed of a carbon material. The bolt through hole 129 is used for installing the bolt 20. The seat ring installation part 132 is an example of a space part for installing the seat ring 12.

The end plate 10-2 has a plurality of second ports 122-2 and 122-3. The port 122-2 communicates with the space portion 131 and the seat ring installation portion 132, and the port 122-3 communicates with the space portion 130. The fitting protrusion 116 of the stuffing box 10-1 is fitted into the fitting recess 134, and by this fitting, the stuffing box 10-1 and the end plate 10-2 are integrated.

<Effects of Example 1>

According to Embodiment 1, the following effects can be obtained.

(1) It has the same structure as the actual machine, and has the handle portion 32 or the shaft support portion 42 to form the training device 2, which can be installed on the stand portion 56 for construction training of the mechanical seal.

(2) If the handle portion 32 or the shaft support portion 42 is used, the construction experience of the mechanical seal can be achieved beyond the actual machine.

Example 2

In the second embodiment, the practice device 2 is used to explain the construction practice steps of the mechanical seal. In this construction practice step, it is assumed that mechanical seals are installed in rotating machines such as pumps (for example, the vertical pump 200 shown in Figure 25). The practice device 2 is used to enable the practitioner to experience disassembly, installation, etc., to improve the mechanical seal Pieces Construction skills. The construction practice steps of the mechanical seal include: a) abnormality confirmation step, b) cleaning step, c) installation step, d) operation confirmation step, e) removal step, and f) error mode step.

a) Abnormal confirmation steps

是參考產生了生鏽、腐蝕、浸蝕、傷痕、打痕等的構件，確認例如填料箱10-1所產生傷痕。確認生鏽、腐蝕、浸蝕、傷痕、打痕等程度，掌握可修復性與更換的必要性。 For the training device 2 or the component parts obtained by the actual machine, ask the trainee to confirm the abnormality and the corresponding handling method. Among them, abnormal cases

Refer to the parts that have rust, corrosion, erosion, scratches, scratches, etc., and confirm the scratches of stuffing box 10-1, for example. Confirm the degree of rust, corrosion, erosion, scars, beating marks, etc., and grasp the repairability and the necessity of replacement.

b) Cleaning steps

The shaft part 4, stuffing box 10-1, end plate 10-2, mechanical seal part 6 and other components are cleaned. Confirm the corresponding treatment methods for mild abnormalities. For the shaft 4, stuffing box 10-1, and end plate 10-2, use cloth, sandpaper, or sponge that does not allow fibers to fall off when cleaning the grooves or steps. Confirm the necessary cleaning agent or abrasive. Use sandpaper, sponge, abrasives, etc. to grind small scars, tiny rusts, etc. Confirm the changes before and after cleaning or the degree of cleaning.

In the seal ring 8, small scars or small recesses in the sliding surface 14-1 are confirmed to confirm whether it can be used. Visual inspection or touch is also a confirmation element. Confirmed as unusable status, prompt replacement. If it is usable, use a cloth that does not fall off the fibers for cleaning. In addition, in the sliding surface portion 14-2 of the seat ring 12, after the abnormality is confirmed, if the function can be restored by washing, the cloth is washed with a cloth that does not fall off.

c) Installation steps

In this installation step, check the installation parts and confirm the installation steps Sequence or precautions, confirm the installation accuracy of each part. The inspection items include the form of the mechanical seal, the number of seal parts, the size of the seal, and whether the appearance of the seal ring 8 and the seat ring 12 is abnormal. The abnormal appearance is scars, nicks, dents, etc. Confirm the precautions for installation. This precaution is to confirm that the sliding surface parts 14-1 and 14-2 as the sealing surface do not contact other members, and to prevent installation on the ground. At the time of installation, it is natural to prevent the sliding surface parts 14-1 and 14-2 from being scratched. Packing materials or the like are used to protect the sliding surface parts 14-1 and 14-2.

This installation step includes c-1) marking step, c-2) measuring step, c-3) fixing step of sealing ring 8, c-4) installing step of housing 10, and c-5) locking bolt 20 Tight steps.

c-1) Scribing steps

As shown in Figure 9A, the ruler 135 is placed against the stuffing box 10-1 and the shaft portion 4 installed on the substrate member 26, and a marking is written on the shaft portion 4 along the reference plane of the ruler 135 136. When the marking 136 is displayed, only the writing utensil 138 may be used. Thereby, as shown in B of FIG. 9, the marking line 136 is displayed on the mechanical seal installation portion 70 of the shaft portion 4.

c-2) Measurement procedure

As shown in C of FIG. 9, since the fixed position of the seal ring 8 is determined, the distance between the marking line 136 and the end of the seal ring 8 is measured by a measuring device 140 such as a caliper.

c-3) Fixing steps of sealing ring 8

To fix the seal ring 8, as shown in Figure 10A, before the seal ring body 8-1 is installed, and after the shaft washers 82-1 and 82-2 are installed on the side of the marking line 136, Fix the seal ring body 8-1. As shown in Fig. 10B, the positioning bolt 106 installed on the support ring portion 8-3 is used as a locking tool 142, for example, a wrench is used for locking. Thereby, the seal ring 8 is fixed to the reference position of the shaft portion 4, and the sliding surface portion 14-1 is set on the shaft portion 4.

c-4) Installation steps of housing 10

As shown in Fig. 11A, after the stuffing box 10-1 surrounding the seal ring 8 is set on the shaft 4, the end plate 10-2 with the seat ring 12 installed is installed. As a result, as shown in Fig. 11B, the end plate 10-2 is provided on the upper side of the stuffing box 10-1, and a gap 144 is generated between the stuffing box 10-1 and the end plate 10-2. It is confirmed whether the interval 144 has been generated. It is only necessary to confirm that the interval 144 is generated by the restoration force of the spring 96 located on the side of the seal ring 8.

In this state, as shown in Figure 11 C, insert the bolt 20 into the bolt through hole 129 on the end plate 10-2 side, and temporarily fix it by manual locking, so that the stuffing boxes 10-1 and 10-2 are engaged .

c-5) Locking steps of bolt 20

As shown in A of FIG. 12, in the step of locking the bolts 20, the bolts 20 are locked multiple times using the locking tool 146. The interval 144 when the bolts are manually tightened 20 is reduced from a few centimeters to close to a tightly connected state, and the stuffing box 10-1 and the end plate 10-2 are combined. At this time, by the fitting of the fitting recess 134 and the fitting protrusion 116, the stuffing box 10-1 and the end plate 10-2 are integrated.

The bolt 20 is locked as shown in B of FIG. 12, and it is confirmed visually, for example, that the space 144 is fixed at a diagonal angle so that each part is equal, and the locking is performed about 10 times. The locking sequence is shown in Figure 12B. It is sufficient to lock the bolts 20 in the opposite direction in order, but it can also be adjusted slightly to equalize the interval 144. It is sufficient to change the locking sequence in the circumferential direction. No matter what is done, it can be realized that the bolts 20 will not be locked in a unilateral state.

d) Action confirmation steps

In the operation confirmation step, after the assembly of the mechanical seal part 6 is completed, as shown in FIG. 13, the handle part 32 is installed on the handle installation part 30, and the practitioner grasps the handle part 32 and performs 3 to 4 rotations. operating. The trainee feels the sense of torque or vibration transmitted from the handle portion 32, and if an abnormal torque occurs, the parts are replaced and the installation is performed again.

e) Disassembly steps

In this disassembly step, it is only necessary to follow the steps opposite to the installation steps. Next, perform the operation confirmation procedure from the installation procedure.

f) Error mode steps

In this error mode step, as shown in FIG. 14, after powdery foreign matter 148 or water is attached to the upper surface of the sliding surface portion 14-1 of the seal ring 8, the mechanical seal portion 6 is assembled in the same manner as the assembly step described above. In the state where the foreign object 148 is present, as shown in FIG. 13 described above, the handle portion 32 is operated to rotate the shaft portion 4. In other words, after rotating with the foreign object 148 biting between the sliding surfaces 14-1 and 14-2, it is confirmed how it affects the sliding surfaces 14-1 and 14-2.

<Effects of Example 2>

According to the second embodiment, the following effects are obtained.

(1) It is possible to practice the device 2 to realize the abnormality generated in the actual machine.

(2) A single training device 2 or multiple training devices 2 can be used to practice a series of steps including confirmation of abnormality, cleaning, installation, operation confirmation, disassembly, etc., and each item can be repeated as necessary, which can induce impossibility in the actual machine. The abnormal state that can occur is used as an error mode step to ensure safety and realize highly reliable construction practice.

Example 3

In the above-mentioned installation steps, the accuracy inspection of the mechanical seal installation part includes g) the lateral deflection measurement step of the shaft part 4, h) the measurement step of the right angle of the stuffing box 10-1, i) the stuffing box 10- Steps for measuring the concentricity of 1, j) Steps for confirming the axial clearance of the shaft 4, etc.

g) Steps for measuring lateral deflection of shaft 4

In the step of measuring the lateral deflection of the shaft 4, as shown in A of FIG. 15, an example of the lateral deflection measuring element is the support arm 152 to support the dial gauge 150 on the stuffing box 10-1, and the dial gauge 150 The contact piece 154 is maintained in contact with the wall surface of the shaft 4 exposed from the stuffing box 10-1. When the shaft portion 4 is rotated, the dial gauge 150 can be used to measure the lateral deflection or eccentricity of the shaft portion 4 indicating the eccentric state of the rotation diameter d1. From the measured values, it can be confirmed whether the shaft 4 has eccentricity and whether there is lateral deflection.

For example, when the rotation diameter of the shaft portion 4 is d1, the allowable range of lateral deflection may be as follows.

When measuring the lateral deflection, as shown in B of FIG. 15, the support member 156 is used instead of the support arm 152 to support the dial gauge 150 on the stuffing box 10-1, and the contact piece 154 can also contact the wall surface of the shaft 4.

h) Steps for measuring the straight angle of stuffing box 10-1

In the step of measuring the right angle of the stuffing box 10-1, as shown in Fig. 16A, an example of the right angle measuring element is to use the support arm 152 to support the dial gauge 150 on the shaft 4, so that the dial gauge 150 is The contact 154 is maintained by contacting the upper surface of the stuffing box 10-1. In this state, when the shaft portion 4 is rotated, the dial gauge 150 can be used to measure the lateral deflection or eccentricity of the shaft portion 4 indicating the eccentric state of the rotation diameter d1. From the measured values, it can be confirmed whether the shaft 4 has eccentricity and whether there is lateral deflection. In this case, it is only necessary to set the allowable range of the right angle in advance and determine whether it is within the allowable range.

In this right angle measurement, as shown in Figure 16B, the support member 156 can be used instead of the support arm 152, so that the dial gauge 150 is supported on the shaft 4, so that the contact piece 154 is in contact with the stuffing box 10-1. Upper surface.

i) Measurement steps of concentricity of stuffing box 10-1

In the step of measuring the concentricity of the stuffing box 10-1, as shown in Fig. 17A, the dial gauge 150 is supported on the shaft 4 by the support arm 152 so that the contact piece 154 contacts the inside of the stuffing box 10-1 The wall surface causes the shaft 4 to rotate. The contact 154 of the dial gauge 150 is slid on the inner wall surface of the stuffing box 10-1 together with the rotation of the shaft 4 for measurement. Similarly, the contact 154 of the dial gauge 150 is slid on the outer wall surface of the stuffing box 10-1 for measurement. If the measured values are compared by the same position with a relationship, the concentricity of the stuffing box 10-1 can be measured.

In the measurement of this concentricity, as shown in Fig. 17B, the support member 156-1 is used to hold the dial gauge 150-1. Similarly, the support member 156-2 is used to hold the dial gauge 150-2. Each dial gauge 150-1, 150-2 measurement The concentricity of the inside and outside of the stuffing box 10-1. In this case, the allowable range of concentricity can refer to equation (1).

j) Steps to confirm the axial clearance of the shaft 4

In the step of confirming the axial clearance of the shaft portion 4, as shown in A of FIG. 18, the dial gauge 150 is supported by the support arm 152 on the handle mounting portion 30 of the shaft portion 4, for example, so that the dial gauge 150 The contact piece 154 contacts the upper surface of the stuffing box 10-1, causing the shaft 4 to rotate. The clearance in the axial direction of the shaft 4 can be measured by the dial gauge 150. The clearance in the axial direction may be 0.5 [mm] or less, for example.

In this case, as shown in B of FIG. 18, the dial gauge 150 is supported on the wall surface of the shaft portion 4 by the support member 156, and the contact piece 154 is brought into contact with the upper surface of the stuffing box 10-1 to make the shaft portion 4 By rotating, the clearance indicated by the arrow mark m can be confirmed.

<Effects of Example 3>

According to Embodiment 3, the following effects can be obtained.

(1) The training device 2 can be used to realize parts that are difficult to measure in the actual machine, and extremely important items such as axial deflection can be confirmed by the measured value.

(2) In these measurement steps, the placement of the dial gauge or the contact object of the contact can be quickly and reliably practiced, which can help the practitioner's skill improvement.

Example 4

FIG. 19 shows the leak confirmation procedure of the mechanical seal part 6 of the fourth embodiment. Connect a pressurized fluid source to the housing 10 from the port 122-1, and allow the pressurized fluid 158 to flow in. If the measuring devices 160-1, 160-2 for detecting fluid leakage are connected to the ports 122-2, 122- 3. The outflow or pressure of the pressurized fluid 158 can be detected from the mechanical seal part 6, specifically, the leakage or the amount of leakage can be measured. In this case, either of the ports 122-2 and 122-3 may be plugged, the pressurized fluid 158 may flow in from the open side, and the measuring device 160 may be connected to the port 122 to measure the leakage or the amount of leakage.

Example 5

Fig. 20 shows the shaft 4 and the stuffing box 10-1 of the fifth embodiment. It is also possible to provide a large diameter portion 164 with a step portion 162 on the shaft portion 4. In this case, a step portion 166 corresponding to the position of the step portion 162 may also be provided in the stuffing box 10-1.

In this configuration, the reference position of the mechanical seal portion 6 with respect to the shaft portion 4 can be easily specified, and the step portion 162 or the large diameter portion 164 can perform the same function as the marking line 136 described above.

Example 6

FIG. 21 shows a construction practice device of the mechanical seal of the housing 10 of the sixth embodiment. In the above-mentioned embodiment or embodiment, for example, a stainless steel material is used for the housing 10, but if such a metal material is used, the housing 10 is opaque, and the inside cannot be visually confirmed.

In the sixth embodiment, the housing 10 is formed of a transparent member such as transparent synthetic resin or glass that can be seen inside. If it is formed with such a light-transmitting member, the inside of the housing 10 can be confirmed during operation.

In this embodiment, the entire housing 10 is formed of a light-transmitting material, but a part of either or both of the stuffing box 10-1 and the end plate 10-2 may be formed of a light-transmitting member, for example, The inside of the housing 10 is seen from the window formed by the light-transmitting member.

Example 7

Figure 22 shows the construction practice department of mechanical seals related to Example 7 System. The construction practice system 170 includes a mechanical seal part 6, an information processing part 172, and an information prompting part 174.

The mechanical seal part 6 is provided with a sensing part 176, and the sensing part 176 includes a plurality of sensors 176-1, 176-2, 176-3, 176-4...

The sensor 176-1 is, for example, a pressure sensor for detecting the pressurized state between the sealing ring 8 and the sliding surface portions 14-1 and 14-2 of the seat ring 12. The sensor 176-2 is, for example, a shaft deflection sensor for detecting the deflection of the shaft portion 4. The sensor 176-3 is a vibration sensor or loudspeaker for detecting vibration or sound generated by the rotation of the shaft 4, for example. The sensor 176-4 is a torque sensor for detecting the torque applied to the shaft 4, for example.

The information processing unit 172 includes a data collection unit 178, a control unit 180, and a memory unit 182. The data collection unit 178 is controlled by the control unit 180, and the control unit 180 obtains the sensor output of each sensor 177-1, 176-2, 176-3, 176-4... of the sensor unit 176.

The control unit 180 is composed of a personal computer or the like, which is an example of a processing unit, and has a processor, etc., and has a data processing function of the sensor signal from the sensor unit 176, for example, at least the sensor signal is converted into image information. . The memory unit 182 includes memory elements such as ROM (Read-Only Memory), RAM (Random-Access Memory), and EEPROM (Electrically Erasable Programmable Read-Only Memory). ROM memorizes various information such as OS (Operating System) or practice control program, construction practice method, etc. RAM constitutes an information processing area.

The information display unit 174 can be controlled by the control unit 180 to display the detections of the sensors 176-1, 176-2, 176-3, 176-4... of the sensing unit 176 Various information such as results, calculation processing results, judgment results, etc.

The sensing unit 176, the information processing unit 172, and the data collection unit 178 have wireless communication functions, and data can be transmitted and received wirelessly, and the trainee can also input data from the operating terminal. In addition, the communication function of the information processing unit 172 may also be used to send the results or evaluation of the practice to the mobile terminal of the trainee for presentation.

<Effects of Example 7>

According to Embodiment 7, the following effects can be obtained.

(1) The practice steps can be automated.

(2) The processing result or implementation result can be presented with image information.

(3) Information processing can be used to track the progress of the evaluation results for efficient construction practice.

Example 8

Fig. 23A shows the seal ring 8 related to the eighth embodiment. As an example of the sliding member of the seal ring 8 including the sliding surface portion 14-1, a sliding surface layer 184 may be provided on the seal ring body portion 8-1. The sliding surface layer 184 is made of a lower hardness than the actual seal ring body portion. Made of abrasive materials.

Fig. 23B shows the seat ring 12 of the eighth embodiment. As an example of the sliding member including the sliding surface 14-2 of the seat ring 12, a sliding surface layer 186 made of an abrasive material having a lower hardness than the actual seat ring may be provided on the small-diameter annular portion 110.

<Effects of Example 8>

According to this embodiment 8, the following effects can be obtained.

(1) The sliding face layer 184, 186 is different from the actual machine, and the degree of abrasion is progressing It becomes remarkable, and the practitioner can easily confirm the wear state, and can easily confirm the changes in the surface properties of the sliding surface 14-1, 14-2.

(2) In response to such changes in surface properties, during the practice, the same construction training as the actual machine can be implemented, which can improve the skills of the constructor.

Example 9

Fig. 24A shows a part of the sliding face 14-2 side of the seat ring 12 related to the ninth embodiment. In this embodiment, a display layer 188 is embedded in the constituent member of the small-diameter annular portion 110 as a display material for indicating a worn state. In this embodiment, one example indicates that the layer 188 is ring-shaped and has a trapezoidal cross-section. In other words, it is a configuration in which the short side of the trapezoid is set to the end surface side of the small-diameter annular portion 110, and the long side is worn out by abrasion.

With such a structure, as shown in Figure 24B, the exposed width of the display layer 188 before or during use is W1, which corresponds to the progress of wear. For example, in the state of wear M, the display layer 188 The exposed width W1 is enlarged to Wx. This magnification can be easily visualized by the practitioner. In this embodiment 9, although the seat ring 12 is disclosed, the same configuration can be applied to the constituent members of the sliding surface portion 14-1 of the seal ring 8.

<Effects of Example 9>

According to this embodiment 9, the following effects can be obtained.

(1) It is not easy to visually confirm the surface properties such as unevenness, scars, abrasion, etc., but the size or change of the exposed width W displayed by the display layer 188 can be used to quantitatively grasp the abrasion state or use time.

(2) According to the size of the exposed width W of the display layer 188, it can be confirmed that the replacement time of the seat ring 12 or the seal ring 8 is coming, and the mechanical seal part 6 can be improved. The reliability or economy.

[Other embodiments]

(1) The above-mentioned embodiments or examples illustrate the mechanical seal part 6 shown in the drawings, but the present invention is not limited to the above-mentioned configuration. There are several forms of the mechanical seal part 6, such as a balanced type or an unbalanced type. The training device of the present invention can be applied to these forms, and the skill of the practitioner can be improved.

(2) Example 9 is an example in which the practice device 2 is described, but it can go beyond the practice device 2 and be more widely applied to mechanical seals, and is not limited to the practice device 2 of the above-mentioned embodiment.

As described above, the best embodiment of the present invention has been described, but the present invention is not limited to the above description. Of course, the gist of the invention may be disclosed based on the description in the scope of the patent application or the form of the invention for implementation. Of course, a person having ordinary knowledge in this technology can make various modifications or changes, and such modifications or changes are of course also included in the scope of the present invention.

Industrial availability

The invention is suitable for the construction practice of mechanical seals used in rotating machines such as pumps or mixers. Construction practitioners can learn the installation, disassembly, replacement, cleaning, maintenance and other construction techniques of mechanical seal-related components, and have Contribute to the realization of a safe and highly reliable sealing mechanism.

2‧‧‧Construction practice device for mechanical seals

4‧‧‧Shaft

6‧‧‧Mechanical Seal Department

8‧‧‧Seal ring

10‧‧‧Shell

10-1‧‧‧The first shell part

10-2‧‧‧Second shell part

12‧‧‧Seat ring

14-1‧‧‧First sliding face

14-2‧‧‧Second sliding face

14-3‧‧‧The third sliding face

16‧‧‧Through hole

18‧‧‧O-ring

20‧‧‧Bolt

21‧‧‧ Bushing

22‧‧‧Ministry of Space

24‧‧‧Flange

26‧‧‧Substrate component

28‧‧‧Bolt

30‧‧‧Handle Installation Department

32‧‧‧Handle

34‧‧‧Corner post

36‧‧‧Mating part

38‧‧‧Crank

40‧‧‧Operation Department

O‧‧‧Axis Center

Claims (16)

A construction practice device for a mechanical seal, which is characterized in that it has: a rotatable shaft portion; a sealing ring fixed to the shaft portion and having a first sliding surface; a first housing portion surrounding the sealing ring; a seat ring, It has a second sliding surface that is in contact with the first sliding surface of the seal ring and is mounted on the shaft; the second housing part is integrated with the first housing to fix the seat ring; and the shaft support part, It is fixed to the first housing portion; the first bearing portion is mounted on the shaft support portion and rotatably supports the shaft portion on one end side of the shaft portion; the second bearing portion is mounted on the shaft support portion, and The shaft portion is rotatably supported at the intermediate portion of the shaft portion; and the guide portion is provided with the first bearing portion and the second bearing portion, respectively, and is provided with means for guiding the shaft portion and fixing the shaft portion Fixing screws, the seat ring is fixed to the space part of the second housing part that is integrated with the first housing part, and the second sliding face part abuts on the first sliding face part, and during construction practice, manually The operation of the rotation of the shaft portion, the first sliding surface portion and the second sliding surface portion are relatively rotatable, and the first bearing portion and the shaft portion are located between the first bearing portion and the shaft portion by the fixing screw of the guide portion The second bearing part and the shaft part form a residual The clearance allows the shaft center of the shaft portion to be displaced to cause the shaft portion to deflect. For example, the construction practice device for a mechanical seal of claim 1, which further has a handle part that can be inserted and removed from the shaft part, and the shaft part can be rotated by the handle part installed on the shaft part. For example, the construction practice device of mechanical seal of claim 1 or 2, wherein the construction practice device of the mechanical seal can measure at least any of the axial deflection and clearance of the shaft. According to claim 1 or 2, the construction practice device for a mechanical seal, wherein the second housing portion further has a third sliding surface surface that contacts the shaft portion. According to claim 1 or 2, the construction practice device for a mechanical seal, wherein the seal ring has a support ring portion fixed to the shaft portion, and the support ring portion has: a spring that pushes the seal ring toward the seat ring side; And a fixing element fixed to the reference position on the shaft portion of the seal ring. For example, the construction practice device for mechanical seals of claim 1 or 2, which further has: a first port provided in the first housing part and connected to the sealing ring; and a second port provided in the second The housing part is connected to the aforementioned seat ring. For example, the construction practice device for mechanical seals of claim 1 or 2, and further, either the aforementioned first housing part or the aforementioned second housing part Or part or all of both of them are visible light-transmitting members. For example, the construction practice device for a mechanical seal of claim 1 or 2, further has a stand portion for supporting or movably supporting the first housing portion or the shaft support portion. A construction practice method for mechanical seals, which is characterized by including the following steps: fixing a seal ring with a first sliding surface to the shaft of a construction practice device for mechanical seals, and the construction practice device for mechanical seals has a shaft Part, shaft support part, a first bearing part mounted on the shaft support part and rotatably supporting the shaft part on one end side of the shaft part, mounted on the shaft support part and rotatably in the middle part of the shaft part A second bearing portion supporting the shaft portion and a guide portion, which are provided by the first bearing portion and the second bearing portion, respectively, and are provided with a fixing for guiding the shaft portion and fixing the shaft portion Screw; set to surround the first housing part of the sealing ring; install the seat ring with the second sliding surface contacting the first sliding surface of the sealing ring on the shaft; install the seat ring in The space part of the second housing part, and the second housing part is integrated with the first housing part; and the first sliding face part and the second sliding part are made by using the handle part or not installing the handle part The face portion is relatively rotated on the shaft portion, and a clearance is formed between the first bearing portion and the shaft portion, and between the second bearing portion and the shaft portion by the fixing screw of the guide portion, so that The shaft center of the aforementioned shaft portion is displaced so that the aforementioned shaft portion is deviated. turn. For example, the construction practice method of the mechanical seal of claim 9, which further includes the following steps before the installation of the seal ring: measuring the eccentricity of the shaft, the clearance of the shaft, the angle of the adjacent member of the shaft, or Either one or more of concentricity. For example, the construction practice method of the mechanical seal of claim 9 or 10, which further includes the steps of: disposing a sealing ring and a shaft part on the first housing part, and disposing a foreign object on at least the sliding surface of the sealing ring. For example, the construction practice method of a mechanical seal of claim 9 or 10, which further includes the following step: the pressurized fluid is transferred from the first port located in the first housing portion or the second port located in the second housing portion Either one of them flows in, and the outflow or pressure of the pressurized fluid flowing out from the first port or the second port is detected. A construction practice system for mechanical seals, which is characterized by having: a sensor portion, including: a sensor for detecting the pressurized state between the seat ring and the seal ring provided on the shaft portion, and for detecting the aforementioned shaft Any one of a sensor for deflection of the part and a sensor for detecting vibration or sound generated by the rotation of the shaft; the processing element has the sensor signal received by the sensor, and at least The sensor signal is converted into a processing function of image information; and the information prompting element at least prompts the processing output of the aforementioned processing element by the image information. A mechanical seal is a machine with at least a seat ring The mechanical seal is characterized in that: an abrasive material with a hardness lower than that of the seat ring member for actual machine is used for the sliding member including at least the sliding surface of the seat ring, and during practice, the sliding surface Changes in surface properties. A mechanical seal is a mechanical seal having at least a seal ring, characterized in that: an abrasive material with a hardness lower than that of the seal ring member used in the actual machine is used for the sliding member including at least the sliding face of the seal ring And during practice, the surface properties of the aforementioned sliding face will be changed. A mechanical seal is a mechanical seal having at least a seat ring or a seal ring, and is characterized in that the sliding member including at least the sliding surface of any one of the seat ring and the seal ring is provided with a degree of wear expressed in terms of wear In the display layer, the cross section of the display layer is trapezoidal, and the short side of the display layer of this trapezoid is arranged on the end surface side. The degree of wear of the sliding surface can be expressed by the change in the shape of the display layer.

Images