JP5284827B2 - Pipe joint protective cover and pipe joint management system - Google Patents

Description

  The present invention relates to a pipe joint protective cover for protecting a pipe joint embedded in soil, and a pipe joint management system using the pipe joint protective cover.

  Conventionally, a sensor device is installed in a pipe buried in soil, and radio waves are transmitted and received between the sensor device and a portable terminal device on the ground by using RFID (radio frequency confirmation) technology. A sensor system has been devised to check the situation (such as the presence or absence of water leakage) (see, for example, Patent Document 1).

JP 2001-291181 A

  However, in the sensor system configured as described above, since the sensor device is installed on the surface of the pipe and buried in the soil, even if there is no water leakage from the pipe, the sensor device can malfunction due to moisture contained in the soil. There is sex. In addition, since a load that is impossible on the ground may be input to the pipe buried in the soil, the sensor device may drop from the pipe or be damaged by the load.

  On the other hand, when pipes buried in the soil are connected in the soil via pipe joints, the pipe joints deteriorate due to moisture or oil in the soil, and there is a high possibility that water will leak from the pipe joints. . For this reason, when the sensor system as described above is used, it is preferable to detect the state of the pipe joint, but even in such a case, it is necessary to protect the sensor device from the malfunction or damage as described above.

  Further, when the pipe joint is buried in the soil as described above, it is difficult to specify the buried position of the pipe joint during maintenance of the pipe joint. For this reason, there is a possibility of damaging the pipe joint and the sensor device at the time of digging from the soil, and it is necessary to avoid this.

  In consideration of the above-mentioned fact, the present invention can easily identify the buried position of the pipe joint, and can protect the pipe joint and the sensor device for the pipe joint, and the pipe joint protective cover. The purpose is to obtain a pipe joint management system using a joint protective cover.

  The pipe joint protective cover according to the first aspect of the present invention includes a cover body that can accommodate therein a pipe joint for connecting a plurality of pipes, and a pipe insertion that is provided in the cover body and into which the pipe can be inserted. Provided on the upper side of the cover body, and a water stop member provided in the pipe insertion part and in close contact with the outer peripheral surface of the inserted pipe and sealing between the pipe and the pipe insertion part And an information transmission sensor device capable of wirelessly transmitting prestored information to the outside of the cover body, and provided on the lower side inside the cover body, and detects the situation inside the cover body and displays the detection result in the cover And a situation detection sensor device capable of wireless transmission to the outside of the body.

  In the pipe joint protective cover according to the first aspect, an information transmission sensor device capable of wirelessly transmitting previously stored information to the outside of the cover body is provided inside the cover body in which the pipe joint is accommodated. Therefore, if the information transmission sensor device stores in advance information such as the embedment position of the pipe joint before the cover body (pipe joint) is buried in the soil, the radio wave transmitted by the information transmission sensor device is transmitted on the ground. By receiving it, it is possible to confirm the buried position of the pipe joint. In addition, since the information transmission sensor device is provided on the upper side inside the cover body, the information transmission sensor device may be submerged even when water accumulates on the lower side inside the cover body due to, for example, water leakage from a pipe joint. Can be prevented.

  In addition, inside the cover body, there is provided a state detection sensor device capable of detecting the state inside the cover body and wirelessly transmitting the detection result to the outside of the cover body. Therefore, the situation inside the cover body buried in the soil can be confirmed by receiving the radio wave transmitted by the situation detection sensor device on the ground. For example, when the situation detection sensor device has a moisture sensor, the presence or absence of water leakage from the pipe joint can be confirmed. In addition, in this case, since the situation detection sensor device is provided on the lower side inside the cover body, the water flowing down to the lower side inside the cover body can be quickly detected by the situation detection sensor device.

  Furthermore, since the pipe joint, the information transmission sensor device, and the situation detection sensor device are provided inside the cover body as described above, the pipe joint and each sensor device can be protected from input of a load in the soil.

  A pipe joint protective cover according to a second aspect of the present invention is the pipe joint protective cover according to the first aspect, wherein the situation detection sensor device is a moisture sensor for detecting moisture inside the cover body, and inside the cover body. At least one of a humidity sensor for detecting the humidity of the cover and a temperature sensor for detecting the temperature inside the cover body.

  In the pipe joint protective cover according to claim 2, at least one of moisture, humidity, and temperature inside the cover body can be detected by at least one of the moisture sensor, the humidity sensor, and the temperature sensor. The result can be transmitted wirelessly outside the cover body. Accordingly, it is possible to easily determine whether maintenance of the pipe joint is necessary on the ground.

  A pipe joint protective cover according to a third aspect of the present invention is the pipe joint protective cover according to the first or second aspect, wherein bellows-like irregularities are formed on both front and back surfaces of the cover body. It is characterized by.

  In the pipe joint protective cover according to claim 3, since the bellows-like unevenness is provided on both the front and back surfaces of the cover body, the cover body can be flexed flexibly when the cover body receives a load. . Moreover, since the cover body is bent by the bellows-like irregularities, the flexibility of the cover body can be ensured even when the cover body is sufficiently thick. Therefore, ensuring of the rigidity of a cover body and ensuring of flexibility can be made compatible.

  A pipe joint protective cover according to a fourth aspect of the present invention is the pipe joint protective cover according to any one of the first to third aspects, wherein the cover body is divided into a plurality of divided parts. It is characterized by being composed by the body.

  In the pipe joint protective cover according to the fourth aspect, the cover body can be divided into a plurality of divided bodies. For this reason, when connecting a some division body mutually and assembling a cover body, a pipe joint can be accommodated inside a cover body. As a result, even a pipe joint having a large size can be accommodated inside the cover body.

  According to a fifth aspect of the present invention, there is provided the pipe joint protective cover according to the fourth aspect of the invention, wherein the connecting portion of the plurality of divided bodies is provided with a water stop means for sealing the connecting portion. It is characterized by having.

  In the pipe joint protective cover according to claim 5, since the connecting portion of the plurality of divided bodies is sealed by the water stopping means, liquid (water, oil, etc.) enters the cover body through the connecting portion. Can be prevented.

  According to a sixth aspect of the present invention, there is provided a pipe joint management system according to any one of the first to fifth aspects, and the information transmission sensor device provided in the pipe joint protective cover. And an information terminal device capable of wireless communication with the situation detection sensor device.

  In the pipe joint management system according to claim 6, the radio wave transmitted by the information transmission sensor device of the pipe joint protective cover buried in the soil is received by the ground information terminal device, so that the buried position of the pipe joint, etc. Can be confirmed. Further, the situation inside the cover body can be confirmed by receiving the radio wave transmitted by the pipe joint protective cover situation detection sensor device by the information terminal device on the ground. In addition, since the pipe joint, the information transmission sensor device, and the situation detection sensor device are provided inside the cover body, the pipe joint and each sensor device can be protected from input of a load in the soil.

  As described above, in the pipe joint protective cover and the pipe joint management system according to the present invention, the buried position of the pipe joint can be easily specified, and the pipe joint and the sensor device for the pipe joint are protected. can do.

It is a perspective view which shows the structure of the pipe joint protective cover which concerns on 1st Embodiment of this invention. It is a longitudinal cross-section of the pipe joint protective cover shown by FIG. It is sectional drawing which shows the screw structure of the connection part of the pipe joint protection cover shown by FIG. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is a block diagram which shows the schematic structure of the information transmission sensor apparatus which is a structural member of the pipe joint protective cover shown by FIG. It is a block diagram which shows the schematic structure of the condition detection sensor apparatus which is a structural member of the pipe joint protective cover shown by FIG. It is a figure for demonstrating the outline | summary of the pipe joint management system which concerns on 1st Embodiment of this invention. It is a perspective view which shows the structure of the pipe joint protective cover which concerns on 2nd Embodiment of this invention. It is a longitudinal cross-section of the pipe joint protective cover shown in FIG. It is sectional drawing which shows the modification of the connection part of the pipe joint protective cover which concerns on 1st Embodiment and 2nd Embodiment.

<First Embodiment>
Hereinafter, with reference to FIGS. 1-8, the 1st Embodiment of the pipe joint protective cover which concerns on this invention, and the pipe joint management system using this pipe joint protective cover is described in detail. First, the pipe joint 12 protected using the pipe joint protective cover 10 according to the present embodiment and the pipe connected by the pipe joint 12 will be described in detail. The pipe joint management system according to the present embodiment includes the pipe joint protective cover 10 and the reader / writer 78 (portable information terminal device) shown in FIG.
(Fittings and piping)
In FIG. 1, a pipe joint 12 covered and protected by a pipe joint protective cover 10 is indicated by a broken line. The pipe joint 12 is a straight joint that connects one pipe P1 and the other pipe P2. In this embodiment, since the pipe P1 is set as a polyvinyl chloride pipe and the pipe P2 is set as a polybutene pipe, the pipe joint 12 is a different diameter pipe joint. This is because the PVC pipe and the polybutene pipe have the same nominal diameter but have different outer diameters and inner diameters. Further, since the pipe P1 and the pipe P2 are buried in the soil, they are covered with flexible bellows-shaped pipe protective covers 21 and 22, respectively. In this embodiment, the pipe P1 is a polyvinyl chloride pipe and the pipe P2 is a polybutene pipe. However, the present invention is not limited to this configuration, and the pipe P1 and the pipe P2 are made of conventionally known materials. can do. Further, in this embodiment, the pipe joint 12 is configured to connect a PVC pipe and a polybutene pipe having the same nominal diameter. However, the present invention is not limited to this configuration, and pipes of the same type and the same nominal diameter are connected to each other. It is good also as a structure to connect, and it is good also as a structure which connects the piping of the same kind but different nominal diameter. That is, any conventionally known joint may be used as long as a plurality of pipes can be connected.

(Fitting protective cover)
As shown in FIGS. 1 and 2, the pipe joint protective cover 10 includes a cover body 30 configured (formed) by connecting three divided bodies. The size of the cover body 30 is set so that the pipe joint 12 can be accommodated therein. In the present embodiment, among the three divided bodies constituting the cover body 30, a substantially cylindrical divided body located at the center is connected to the central divided part 32 and the pipe P1 side of the central divided part 32. A substantially cylindrical divided body connected to the pipe P <b> 2 side of the first divided part 34 and the central divided part 32 is referred to as a second divided part 36. These divided parts are connected to each other by screwing a male screw and a female screw. In this embodiment, the male screw 32A is connected to the male screw 32A provided at both ends in the axial direction of the central divided part 32 in the axial division of the first divided part 34, as shown in FIG. The female screw 34A provided at the end portion on the part 32 side and the female screw 36A provided on the end portion on the central divided part 32 side in the axial direction of the second divided part 36 are respectively screwed together. In other embodiments, the central divided part 32 may be formed with a female screw, the first divided part 34 and the second divided part 36 may be formed with a male screw, and the divided parts may be connected. A male screw and a female screw are formed in the part 32, and a female screw or a male screw corresponding to the male screw or the female screw formed in the central divided part is formed in the first divided part 34 and the second divided part, and each divided part is connected. It may be configured.

  Further, as shown in FIG. 3, a fitting insertion groove 70 is formed at the end of the first division part 34 on the side of the central division part 32, and the fitting insertion groove 70 constitutes a water stop means. An annular O-ring 72 is inserted. The O-ring 72 is in close contact with the end portion of the central divided part 32 on the first divided part 34 side in a state where the first divided part 34 is connected to the central divided part 32 (shown in FIG. 3). Thereby, the connection part of the 1st division | segmentation part 34 and the center division | segmentation part 32 is sealed. Similarly, a fitting groove 74 is formed at the end of the second divided part 36 on the center divided part 32 side, and an annular O-ring 72 that constitutes a water stop means is formed in the fitting groove 74. It is inserted. The O-ring 72 is in close contact with the end of the second divided part 36 on the side of the central divided part 32 in a state where the second divided part 36 is connected to the central divided part 32. Thereby, the connection part of the center division | segmentation part 32 and the 2nd division | segmentation part 36 is sealed. In other embodiments, the connecting part of each divided part may be sealed by coating the male screw part or the female screw part of each divided part with a rubber material.

  On the other hand, as shown in FIGS. 1, 2, 4, and 5, the end of the first divided part 34 that is opposite to the female screw 34 </ b> A in the axial direction is a pipe insertion portion 44 into which the pipe P <b> 1 can be inserted. Yes. An annular insertion groove 45 is provided on the inner peripheral surface of the pipe insertion portion 44, and an annular O-ring 54 as a water stop member is inserted into the insertion insertion groove 45. The inner diameter of the O-ring 54 is set to be smaller than the outer diameter of the pipe P1, and when the pipe P1 passes through the inside of the O-ring 54, the inner peripheral surface of the O-ring 54 comes into close contact with the outer peripheral surface of the pipe P1. The space between the pipe insertion portion 44 and the pipe P1 is sealed.

  Similarly, the end of the second divided part 36 on the opposite side to the female screw 36A is a pipe insertion part 46 into which the pipe P2 can be inserted. An annular insertion groove 47 is provided on the inner peripheral surface of the pipe insertion portion 46, and an annular O-ring 56 as a water stop member is inserted into the insertion insertion groove 47. The inner diameter of the O-ring 56 is set to be smaller than the outer diameter of the pipe P2. When the pipe P2 is inserted inside the O-ring 56, the inner peripheral surface of the O-ring 56 is in close contact with the outer peripheral surface of the pipe P2. The space between the pipe insertion portion 46 and the pipe P2 is sealed.

  As shown in FIGS. 1, 2, and 4, the central divided part 32 is formed with a tubular pipe insertion portion 42 into which the pipe P <b> 2 can be inserted in a direction orthogonal to the axial direction. An annular fitting groove 43 is provided on the inner peripheral surface of the pipe insertion portion 42, and an annular O-ring 52 as a water stop member is fitted into the fitting insertion groove 43. The inner diameter of the O-ring 52 is set to be smaller than the outer diameter of the pipe P2. When the pipe P2 is inserted inside the O-ring 52, the inner peripheral surface of the O-ring 52 is brought into close contact with the outer peripheral surface of the pipe P2. The space between the pipe insertion portion 46 and the pipe P2 is sealed. In addition, in this embodiment, since the straight type pipe joint 12 is used, the piping insertion part 42 of the center division | segmentation part 32 is made unnecessary, and is obstruct | occluded with the cap 50 as a cover body. The cap 50 is made of elastically deformable rubber, and is set to a size such that the outer peripheral surface of the portion inserted into the pipe insertion portion 42 is in close contact with the inner peripheral surface of the pipe insertion portion 42. As another configuration of the cap 50, an O-ring is provided at a portion inserted into the pipe insertion portion 42, and the outer peripheral surface of the O-ring and the inner peripheral surface of the pipe insertion portion 42 are brought into close contact with each other. It may be configured to be closed, and a male screw or a female screw is formed in a portion inserted into the pipe insertion portion 42, a female screw or a male screw is formed on the inner peripheral surface of the pipe insertion portion 42, and these are screwed together to form the pipe insertion portion 42. It may be configured to block the Moreover, it is good also as a structure which makes the cap 50 into a cylindrical body, and close | closes the piping insertion part 42 by sticking an outer peripheral surface to the O-ring 52.

  In addition, protrusions 62, 64, and 66 serving as locking portions are provided on the outer peripheral surface of each pipe insertion portion at intervals in the circumferential direction of each pipe insertion portion. As shown in FIG. 2, the protrusion 64 provided on the pipe insertion portion 44 can be fitted (hooked) into the concave portion inside the bellows-like pipe protection cover 21 of the pipe P <b> 1. Similarly, the projection 66 provided in the pipe insertion portion 46 is adapted to be fitted (hooked) into the concave portion inside the bellows-like pipe protection cover 22 of the pipe P2. In the present embodiment, the pipe insertion portion 42 closed by the cap 50 is also provided with a protrusion 62, and this protrusion 62 can be fitted into the concave portion inside the bellows-like pipe protective cover 22 of the pipe P2 (hanging). Is).

  On the other hand, as shown in FIGS. 1, 2, and 4, an information transmission sensor device 80 (IC tag in the present embodiment) is provided in the upper part inside the cover body 30. The information transmission sensor device 80 is disposed on the side of the pipe insertion portion 42 and is fixed to the inner peripheral surface of the upper part of the central divided part 32 by, for example, an adhesive or a double-sided adhesive tape. This information transmission sensor device 80 constitutes an RFID (Radio Frequency Identification) system together with a reader / writer 78 (see FIG. 8). As shown in FIG. 6, an IC chip 82 as a communication element, The IC chip 82 is mainly configured with an antenna 84 for performing wireless communication with radio waves of a specific frequency. In the nonvolatile memory (EEPROM) of the IC chip 82, various types of information (embedding position, burying depth, peripheral piping information, ID, etc.) relating to the pipe joint 12 housed inside the cover body 30 are stored.

  The reader / writer 78 includes an antenna, various circuits, a controller, and the like, and can read data recorded on the IC chip 82 and write data to the IC chip 82 in a non-contact manner. It is said that. In this embodiment, the information transmission sensor device 80 is configured to operate using radio waves from the reader / writer 78 as an energy source (a so-called passive tab), and radio waves including control signals are transmitted from the antenna on the reader / writer 78 side. When transmitted, the antenna 84 on the information transmission sensor device 80 side receives the radio wave and generates an electromotive force by electromagnetic induction or the like. The IC chip 82 is activated by this electromotive force, and information stored in the IC chip 82 is transmitted from the antenna 84 on the information transmission sensor device 80 side to the reader / writer 78. The reader / writer 78 includes notifying means (display 79 in the present embodiment) for notifying the received information, and displays various received information on the display 79. In other embodiments, the information transmission sensor device may be configured to have a battery (so-called active tag). In this case, since the information transmission sensor device operates by the power of the battery and emits radio waves by itself, the communication distance can be increased.

  On the other hand, as shown in FIGS. 1, 2, and 4, a situation detection sensor device is provided in the lower part inside the cover body 30. This situation detection sensor device is disposed at a position facing the pipe insertion portion 42 in the inner peripheral portion of the central divided part 32, and is formed on the inner peripheral surface of the lower portion of the central divided part 32 with, for example, an adhesive or a double-sided adhesive tape. It is fixed. This situation detection sensor device constitutes an RFID (Radio Frequency Identification) system together with the above-described reader / writer 78. As shown in FIG. 7, an IC chip 88 as a communication element and an IC chip 88 are specified. It includes an antenna 90 for performing wireless communication with radio waves of a frequency and a moisture sensor 92 connected to an IC chip 88.

  When a radio wave including a control signal is transmitted from the antenna on the reader / writer 78 side, the antenna 90 on the situation detection sensor device 86 side receives the radio wave and generates an electromotive force by electromagnetic induction or the like. The IC chip 88 and the moisture sensor 92 are activated by this electromotive force, and the moisture sensor 92 detects the moisture value inside the cover body 30. A detection signal of the moisture sensor 92 is input to the IC chip 88 and further transmitted to the reader / writer 78 via the antenna 90. Thereby, the moisture value in the cover body 30 is displayed on the display 79 of the reader / writer 78. In other embodiments, a situation detection sensor device having a built-in battery (so-called active tag) may be employed. In this case, since the situation detection sensor device operates by the power of the battery and emits radio waves by itself, the communication distance can be increased. In other embodiments, a humidity sensor, a temperature sensor, or the like may be employed instead of the moisture sensor 92. In this case, the humidity, temperature, etc. inside the cover body 30 can be detected.

(Construction procedure)
Next, a construction procedure when the pipe joint protection cover 10 is used to cover and protect the pipe joint 12 will be described. First, the cover body 30 is divided (disassembled) into divided parts. Next, the pipe P <b> 1 embedded in the soil is inserted into the pipe insertion portion 44 of the first divided part 34. Thereby, the inner peripheral surface of the O-ring 54 is in close contact with the outer peripheral surface of the pipe P1, and the space between the pipe insertion portion 44 and the pipe P1 is sealed.

  Next, the pipe P <b> 1 is connected to the pipe joint 12. Then, the male screw 32A of the central divided part 32 is screwed into the female screw 34A of the first divided part 34 so as to accommodate the pipe joint 12 therein, and these divided parts are connected. As a result, the connecting portion between the central divided part 32 and the first divided part 34 is sealed by the O-ring 72.

  Then, the pipe P <b> 2 embedded in the soil or before being embedded in the soil is inserted into the pipe insertion portion 46 of the second divided part 36. Thereby, the inner peripheral surface of the O-ring 56 is brought into close contact with the outer peripheral surface of the pipe P2, and the space between the pipe insertion portion 46 and the pipe P2 is sealed.

  Next, the pipe P2 is connected to the pipe joint 12, and the female screw 36A of the second divided part 36 is screwed into the male screw 32A of the central divided part 32 to connect these divided parts. Accordingly, the connecting portion between the central divided part 32 and the second divided part 36 is sealed by the O-ring 76, and the pipe joint 12 is housed inside the cover body 30 and protected. The cap 50 may be attached at any timing before, during, and after the cover body 30 is assembled.

  Next, the pipe insertion parts 44 and 46 of the cover body 30 are inserted inside the pipe protection covers 21 and 22 covering the pipes P1 and P2, respectively. As a result, the projections 64 and 66 are fitted (hooked) into the recesses inside the pipe protection covers 21 and 22, and the pipe protection covers 21 and 22 are connected to the cover body 30 (shown in FIGS. 1 and 2).

  In this state, since the pipe joint 12 is accommodated and protected inside the cover body 30, the pipe joint 12 is prevented from being damaged by an impact such as when dug up. Moreover, since each piping insertion part is sealed by O-rings 52, 54, and 56, and the connection part of each divided part is sealed by O-rings 72 and 76, liquid (water, oil, etc.) into the cover body 30 is contained. ) Is prevented from entering. Thereby, deterioration of the pipe joint 12 by the penetration | invasion of a liquid can be prevented, and the water leak from the pipe joint 12 can be prevented as a result.

  Further, in this embodiment, when a piping manager or the like brings the reader / writer 78 close to the ground from the ground and transmits a radio wave of a predetermined frequency, the information transmission sensor device 80 provided in the cover body 30 is preliminarily provided. The stored various information (such as the embedded position of the pipe joint 12) is transmitted to the reader / writer 78. Thereby, since the various information is displayed on the display 79 of the reader / writer 78, it is possible to grasp in advance the embedded position information when the pipe joint 12 is dug back. Therefore, quick and safe maintenance is possible. Moreover, since the information transmission sensor device 80 is provided in the upper part inside the cover body 30, even when water accumulates on the lower side inside the cover body 30 due to water leakage from the pipe joint 12 or the like, the information transmission sensor device 80. Can be prevented from being flooded.

  Further, in this embodiment, when a piping administrator or the like brings the reader / writer 78 close to the ground from the ground and transmits a radio wave of a predetermined frequency, the situation detection sensor device 86 provided inside the cover body 30 The moisture value inside the cover body 30 is detected, and the detection result is transmitted to the reader / writer 78. As a result, the moisture value inside the cover body 30 is displayed on the display 79 of the reader / writer 78, so that there is no leakage of water from the pipe joint 12 or water enters the inside of the cover body 30 without dug up the soil. Can be confirmed. Therefore, efficient maintenance can be performed. In addition, since the situation detection sensor device 86 is provided at a position inside the cover body 30, that is, at a position where water collects along the inner peripheral surface (spherical surface) of the cover body 30, the situation detection sensor device 86 performs the cover body 30. The internal moisture can be detected quickly.

  Furthermore, in this embodiment, since the information transmission sensor device 80 and the situation detection sensor device 86 are provided inside the cover body 30 as described above, these sensor devices can be protected by the cover body 30. Therefore, it is possible to prevent each sensor device from malfunctioning due to moisture contained in the soil, or damage to each sensor device due to the input of a load in the soil.

  In the present embodiment, the cover body 30 can be divided into a central divided part 32, a first divided part 34, and a second divided part 36. For this reason, when these divided bodies are connected to each other and the cover body 30 is assembled, the pipe joint 12 can be accommodated inside the cover body 30. Therefore, even a pipe joint having a large size can be easily accommodated inside the cover body 30, and the assembly work and piping work of the cover body 30 can be facilitated. Further, since the divided parts are connected by screwing the male screw and the female screw, the assembly work of the cover body 30 can be facilitated also by this.

In the first embodiment, the case where radio waves transmitted by the information transmission sensor device 80 and the situation detection sensor device 86 are received on-site by the reader / writer 78 (portable information terminal device) has been described. Is not limited to this. For example, if the radio waves transmitted by the information transmission sensor device 80 and the situation detection sensor 86 are received at a pipe repair service center or the like, the pipe manager or the like stays at the repair service center or the like to check whether there is water leakage or not. Etc. can be detected quickly and accurately. As a result, it becomes possible to quickly dispatch a service person to the site where water leakage occurs, and early repair of the water leakage location is realized. This also applies to the second embodiment of the present invention described below.
<Second Embodiment>
Next, based on FIG.8 and FIG.9, the 2nd Embodiment of this invention is described. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol as the said 1st Embodiment is provided, and the description is abbreviate | omitted.

  This embodiment has basically the same configuration as that of the first embodiment. However, in the pipe joint protective cover 94 according to this embodiment, the axially intermediate portion of the central divided part 32 constituting the cover body 96 is used. The central bellows part 32B is provided in the part. The central bellows portion 32B is formed by providing bellows-like irregularities on both the front and back surfaces of the central divided part 32, and the central portion 32 in the axial direction has flexibility. In addition, a first bellows portion 34 </ b> B is provided in an intermediate portion in the axial direction of the first divided part 34 of the cover body 96. The first bellows part 34B is formed by providing bellows-like irregularities on both front and back surfaces of the first divided part 34, and the first intermediate part 34 is provided with flexibility in the middle in the axial direction. Yes. Similarly, a second bellows portion 36 </ b> B is provided in the middle portion in the axial direction of the second divided part 36. The second bellows part 36B is formed by providing bellows-like irregularities on both the front and back surfaces of the second divided part 36, and the second divided part 36 is provided with flexibility at the intermediate part in the axial direction. Yes.

  Further, in this embodiment, a T-shaped pipe joint 98 (a joint capable of connecting one pipe P1 and two pipes P2) is accommodated in the cover body 96 and inserted into the pipe insertion portion 42. The pipe P2 is connected to the pipe joint 98. An O-ring 52 is brought into close contact with the outer peripheral surface of the pipe P2 inserted into the pipe insertion portion 42, and the space between the pipe insertion portion 42 and the pipe P2 is sealed. Further, the pipe protection cover 22 is connected to the central divided part 32 by fitting the projection 62 of the pipe insertion portion 42 into the concave portion inside the pipe protection cover 22. In addition, in the pipe joint protective cover 10 according to the first embodiment, the T-shaped pipe joint can be protected similarly to this embodiment. In this embodiment, the other configurations are the same as those in the first embodiment.

  Also in this embodiment, the pipe joint 98 is received by the ground reader / writer 78 receiving radio waves transmitted by the information transmission sensor device 80 and the situation detection sensor device 86 of the pipe joint protective cover 94 embedded in the soil. And the presence or absence of water leakage from the pipe joint 98 can be confirmed. Further, since each sensor device is provided inside the cover body 96, each sensor device can be protected from the input of a load in the soil.

  Further, in this embodiment, when a load that cannot be generated on the ground is input to the cover body 96 buried in the soil, or when the pipes P1 and P2 are connected to the pipe joint 98, the cover body 96 is provided. When an excessive bending load is input to the center body 32B, the first bellows part 34B, and the second bellows part 36B provided on the cover body 96 (each divided part), the cover body 96 is deformed. The cover body 96 is bent (flexibly deformed). Thereby, it is prevented that an excessive load is applied to the cover body 96, and damage to the cover body 96 is prevented. Further, since the load on the pipe joint 98 and the pipes P1 and P2 is reduced by the deformation of the cover body 96, the pipe joint 98 and the pipes P1 and P2 are prevented from being damaged.

  Moreover, in the present embodiment, since the cover body 96 is bent by the central bellows portion 32B, the first bellows portion 34B, and the second bellows portion 36B formed in a bellows shape, the thickness of the cover body 96 is reduced. Even when sufficiently secured, the cover body 96 can be bent. Therefore, it is possible to ensure the flexibility of the cover body 96 while ensuring the rigidity of the cover body 96 against an impact such as when dug up, and to achieve conflicting performances.

  In each of the above embodiments, when the L-shaped pipe joint (a joint that can connect one pipe P1 and one pipe P2) is protected by the pipe joint protective covers 10, 94, the pipe insertion portion 46 is used. Is closed with a cap 50, and the pipe P2 is inserted into the pipe insertion portion 42 and connected to an L-shaped pipe joint.

  Moreover, in each said embodiment, although it was set as the structure by which each division | segmentation part is connected by the screwing of a male screw and a female screw, this invention is not restricted to this, The connection structure of each division | segmentation part can be changed suitably. For example, as shown in FIG. 11, a fitting-type connection structure may be used. In the configuration shown in FIG. 11, at the end of the central divided part 32 on the first divided part 34 side, a convex portion protruding outward in the radial direction of the central divided part 32 instead of the male screw 32A according to each of the above embodiments. 32C is provided. Moreover, the recessed part 34C which the said convex part 32C fits instead of the internal thread 34A which concerns on each said embodiment is provided in the edge part by the side of the center divided part 32 of the 1st divided part 34, and the convex part 32C and The center divided part 32 and the first divided part 34 are connected by fitting with the recess 34C. Even in this configuration, since the connecting portion between the central divided part 32 and the first divided part 34 is sealed by the O-ring 72, it is possible to prevent liquid from entering the cover body 30 via the connecting portion. it can. Although not shown, the same connection structure can be adopted for the connection part between the central divided part 32 and the second divided part 36.

  In each of the above embodiments, the case where the information transmission sensor device 80 includes the IC chip 82 has been described. However, the present invention is not limited to this, and the information transmission sensor device covers the information stored in advance. As long as it can be wirelessly transmitted to the outside, the configuration can be changed as appropriate.

  In each of the above embodiments, the situation detection sensor device 86 includes the IC chip 88. However, the present invention is not limited to this, and the situation detection sensor detects the situation inside the cover body. As long as the detection result can be transmitted to the outside of the cover body, the configuration can be changed as appropriate.

  In each of the above embodiments, the cover body 30 is configured by connecting three divided parts. However, the present invention is not limited to this configuration, and the number of divided parts can be changed as appropriate. For example, if a configuration is provided in which a plurality of divided parts corresponding to the central divided part are provided, it is possible to correspond to a pipe joint (for example, a pipe header) that branches into a plurality of parts.

  Further, in each of the above embodiments, the space between the pipe joints 12 and 98 and the cover bodies 30 and 96 is hollow. However, the present invention is not limited to this configuration, and the pipe joints 12 and 98 and the cover body are not limited thereto. An impact absorbing material (for example, a cushioning material such as a rubber piece or a sponge) that absorbs an impact may be disposed (accommodated) between 30 and 96. In this case, even if an impact at the time of digging is applied to the cover bodies 30 and 96, the shock absorber absorbs the impact, so that the pipe joints 12 and 98 and the pipes P1 and P2 in the cover bodies 30 and 96 are damaged. It can prevent sticking.

  Moreover, in each said embodiment, you may comprise the cover bodies 30 and 96 with a transparent or translucent resin material. Note that the transparency (light transmittance) of the cover bodies 30 and 96 at this time is desirably a level at which the pipe joints 12 and 98 and the pipes P1 and P2 can be visually recognized through the cover bodies 30 and 96. When a transparent or translucent resin material is used for the cover bodies 30 and 96, the state of the pipe joints 12 and 98 and the connection state between the pipe joints 12 and 98 and the pipes P1 and P2 can be visually confirmed. Therefore, maintainability is improved.

  The present invention has been described with reference to the embodiments. However, these embodiments are merely examples, and various modifications can be made without departing from the scope of the invention. It goes without saying that the scope of rights of the present invention is not limited to these embodiments.

10 Pipe joint protective cover 12 Pipe joint 30 Cover body 32 Center split parts (split body)
34 First divided parts (divided bodies)
36 Second divided parts (divided bodies)
42, 44, 46 Piping insertion part 52, 54, 56 O-ring (water-stop member)
72, 76 O-ring (water stop means)
78 Information terminal device 80 Information transmission sensor device 86 Situation detection sensor device 92 Moisture sensor 94 Pipe joint protective cover 96 Cover body

Claims (6)

A cover body that can accommodate therein a pipe joint for connecting a plurality of pipes;
A pipe insertion portion provided in the cover body and capable of inserting the pipe;
A water stop member that is provided in the pipe insertion portion and seals between the pipe and the pipe insertion portion in close contact with the outer peripheral surface of the inserted pipe;
An information transmission sensor device which is provided on the upper side inside the cover body and can wirelessly transmit information stored in advance to the outside of the cover body;
A situation detection sensor device that is provided on the lower side inside the cover body, detects the situation inside the cover body, and wirelessly transmits the detection result to the outside of the cover body,
Pipe joint protective cover with.   The situation detection sensor device includes at least one of a moisture sensor that detects moisture inside the cover body, a humidity sensor that detects humidity inside the cover body, and a temperature sensor that detects temperature inside the cover body. The pipe joint protective cover according to claim 1.   The pipe joint protective cover according to claim 1 or 2, wherein bellows-like irregularities are formed on both front and back surfaces of the cover body.   The said cover body is comprised by the several division body connected so that division | segmentation is possible, The pipe joint protective cover of any one of Claims 1-3 characterized by the above-mentioned.   The pipe joint protective cover according to claim 4, wherein a water stop means for sealing the connection part is provided at the connection part of the plurality of divided bodies. The pipe joint protective cover according to any one of claims 1 to 5,
An information terminal device capable of wireless communication between the information transmission sensor device and the situation detection sensor device provided in the pipe joint protective cover;
Pipe fitting management system equipped with.

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