JP5265266B2 - Sealing test device for joints of jointed synthetic resin pipes and method for testing sealing properties of joints of jointed synthetic resin pipes using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a testing device capable of efficiently testing the sealability of a joint of a pipe made of a bonded synthetic resin. <P>SOLUTION: The sealability testing device 2 is constituted of a first flange support base 3 for supporting a first flange member F1 on the right-end side of a bonded hard vinyl chloride pipe 1, a second flange support base 4 for supporting a second flange member F2 on the left-end side, and a pipe support base 5 for supporting the bonded hard vinyl chloride pipe 1. The first flange support base 3 has a discoid sealing plate member 8. The second flange support base 4 has a placing base part 11, a flange-receiving member 12 provided on the placing base part 11, and a discoid seal plate member 13. An aperture part is formed at the center of the sealing plate member 13, and the aperture part communicates with a compressor 19. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an apparatus for testing the sealing performance of a joint portion of a joint synthetic resin pipe joined with a synthetic resin pipe such as a hard vinyl chloride pipe. The present invention also relates to a method for testing the sealing performance of a joint portion of a joint synthetic resin pipe joined with a synthetic resin pipe such as a hard vinyl chloride pipe.

  Conventionally, pipes made of synthetic resin such as rigid polyvinyl chloride pipes are widely used as water supply and drainage pipes in various factories. For example, this synthetic resin pipe is formed by applying an adhesive to the outer peripheral surface of one end of a pair of 4 m pipes and inserting and fixing the flange member by human power. A pair of pipes are joined by applying an adhesive to the socket and inserting it into a socket (joint) in the middle while holding it in a state of being held by hand.

  However, in the conventional joint work of rigid polyvinyl chloride piping by an operator, it is inefficient and requires a long time to hold and position the pipe material and insert it perpendicular to the socket opening. Met. In particular, in the case of a hard vinyl chloride pipe, the pipe material itself may exceed 50 kg in the case of a large diameter, and it has been very difficult to perform the joining work by the operator's manual work.

  Furthermore, if the workability in joining hard vinyl chloride pipes is poor, the pipes will be easily displaced from the socket opening, and even if they are slightly displaced, a gap will occur in the socket part, causing water leakage at the joints, etc. Since it can be a cause, there is a problem that the yield of the obtained joint piping is poor in the above-described work.

  As mentioned above, the joint synthetic resin pipes have water leakage tests from the joints and flanges. And was judging while driving. In particular, in the case of large-scale facilities, it is desirable to prepare only pipes that have been subjected to a water flow test beforehand, since there are a large number of joint synthetic resin pipes that are required, but there is no efficient water flow test method. Was the current situation.

  If it is possible to easily and efficiently test the sealing performance of the joint part of the joint synthetic resin pipe, it is desirable not only to reduce nonconformance cases at the time of delivery, but also to improve the efficiency of facility construction.

  An object of the present invention is to solve the above-mentioned conventional problems and to provide a test apparatus capable of efficiently testing the sealing performance of a joint portion of a joint synthetic resin pipe. Another object of the present invention is to provide a method for testing the sealing property of a joint portion of a joint synthetic resin pipe, which can efficiently test the sealing performance of the joint portion of the joint synthetic resin pipe.

In order to solve the above-mentioned problem, first, the present invention is an apparatus for testing a sealing state of a joint portion of a joint synthetic resin pipe obtained by joining two or more synthetic resin pipes. A sealing plate member that can be press-contacted to one end of a resin pipe, a gas-pressing member that can be press-contacted to the other end of the joint synthetic resin pipe, and a gas supply mechanism connected to the gas-pressing member The sealing plate member or the gas pressure feeding member is provided so as to be drivable in the axial direction of the joint synthetic resin pipe. An apparatus is provided ( Invention 1).

According to the said invention ( invention 1), the sealing plate member or the gas pressure feeding member is driven in the axial direction with respect to the joint synthetic resin pipe joined with the synthetic resin pipe, and one end of the joint synthetic resin pipe is driven. Sealing with a sealing plate member, closing the other end with a gas pumping member, and subsequently supplying gas to a predetermined pressure from the gas supply mechanism into the joint synthetic resin pipe, and observing this gas leak Thus, it is possible to easily test the sealing performance of the joint portion of the joint synthetic resin pipe.

In the said invention ( invention 1), it is preferable that the flange member is being fixed to the both ends of the said joint synthetic resin piping ( invention 2).

According to the said invention ( invention 2), the flange member of the both ends of joining synthetic resin piping can be sealed with a sealing board member and a gas pumping member, and air can be supplied in joining synthetic resin piping.

In the above inventions ( Inventions 1 and 2), the pressure contact surface to one end of the joint synthetic resin pipe of the sealing plate member and the pressure contact surface to the other end of the joint synthetic resin pipe of the gas feeding member are elastic synthetic resins. It is preferable that an air supply hole is formed on the pressure contact surface of the gas pressure feeding member, and the gas supply mechanism communicates with the air supply hole ( Invention 3).

According to the above invention ( Invention 3), both ends of the joint synthetic resin pipe are sealed with a sealing plate member having a pressure contact surface made of an elastic synthetic resin and a gas pumping member, and the joint synthetic resin is sealed from the air supply hole by the gas supply mechanism. Air can be supplied into the piping.

2ndly, this invention is a method for testing the sealing state of the junction part of the joint synthetic resin piping which joined two or more synthetic resin piping, Comprising: It seals in the end of the said joint synthetic resin piping The plate member is pressed and sealed, and the gas supply member connected to the gas supply mechanism is pressed to the other end to close the joint synthetic resin pipe, and the gas supply mechanism is interposed via the gas supply member. A method for testing the sealing property of a joint portion of a joint synthetic resin pipe, characterized in that gas is supplied and held at a predetermined pressure in the joint synthetic resin pipe ( Invention 4).

According to the above invention ( invention 4), the sealing plate member or the gas pressure feeding member is driven in the axial direction with respect to the joint synthetic resin pipe joined with the synthetic resin pipe, and one end of the joint synthetic resin pipe is driven. While sealing with a sealing plate member, the other end is closed with a gas pumping member, then gas is supplied from the gas supply mechanism into the joint synthetic resin pipe to a predetermined pressure, and this is held to leak gas. By observing the above, it is possible to easily test the sealing performance of the joint portion of the joint PVC pipe.

In the said invention ( invention 4), it is preferable that the flange member is being fixed to the both ends of the said joint synthetic resin piping ( invention 5).

According to the said invention ( invention 5), the flange member of the both ends of joining synthetic resin piping can be sealed with a sealing board member and a gas pumping member, and air can be supplied in joining synthetic resin piping.

In the above inventions ( Inventions 4 and 5), the pressure contact surface to one end of the joint synthetic resin pipe of the sealing plate member and the pressure contact surface to the other end of the joint synthetic resin pipe of the gas feeding member are elastic synthetic resin. It is preferable that an air supply hole is formed on the pressure contact surface of the gas pressure feeding member, and the gas supply mechanism communicates with the air supply hole ( Invention 6).

According to the above invention ( Invention 6), both ends of the joint synthetic resin pipe are sealed with a sealing plate member having a pressure contact surface made of elastic synthetic resin and a gas feeding member having a pressure contact surface made of elastic synthetic resin, Air can be supplied into the joint synthetic resin pipe from the air supply hole by the gas supply mechanism.

In the said invention ( invention 4-6), sealing performance can be determined by transition of the pressure in the said joint synthetic resin piping ( invention 7).

According to the above invention ( Invention 7), for example, a pressure sensor is provided in the gas supply mechanism, gas is supplied into the joint synthetic resin pipe at a predetermined pressure, this pressure is measured, and the pressure drop is predetermined. If the speed is exceeded, it can be determined that there is a leaking part at the joint of the joint synthetic resin pipe.

Moreover, in the said invention ( invention 4-6), gas is supplied to the said joint synthetic resin piping by predetermined pressure, for example, surfactant solution etc. are apply | coated to the junction part etc., and a gas leak is carried out. It can be determined by whether or not it occurs ( Invention 8).

  In the present invention, it is possible to easily test whether or not there is a leak in the joint portion of the joint synthetic resin pipe by filling the gas without passing water, so know the incompatible joint synthetic resin pipe in advance. The reliability of field work can be greatly improved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIGS. 1 to 4 each show a sealing performance testing device for a joint portion of hard vinyl chloride piping which is a joint synthetic resin piping according to an embodiment of the present invention, FIG. 1 is a plan view, and FIG. FIG. 3 is a side view showing a support base for a flange member of a joined hard vinyl chloride pipe, FIG. 3 is a side view showing a support base for a joined hard vinyl chloride pipe, and FIG. 4 is a schematic view showing a state during a sealing test. is there.

  1 to 3, the joined hard vinyl chloride pipe 1 is formed by joining a first hard vinyl chloride pipe A1 and a second hard vinyl chloride pipe A2 with an adhesive as a socket S to a joint a. The first flange member F <b> 1 and the second flange member F <b> 2 are each fixed as a joint portion b and a joint portion c with an adhesive.

  Such a joint sealing property test apparatus 2 of the joined hard vinyl chloride pipe 1 has a first flange that supports the first flange member F1 on one end side (right end side in FIG. 1) of the joined hard vinyl chloride pipe 1. It comprises a support base 3, a second flange support base 4 that supports the second flange member F2 on the other end side (left end side in FIG. 1), and a pipe support base 5 that supports the bonded rigid vinyl chloride pipe 1. Has been.

  The first flange support 3 includes a mounting base 6, a flange receiving member 7 provided on the mounting base 6, a disc-shaped sealing plate member 8 serving as a sealing plate member, and the sealing plate member 8. The seal plate member 8 can be advanced and retracted in the axial direction of the bonded rigid vinyl chloride pipe 1 by the hydraulic cylinder 9. In addition, the surface (pressure contact surface) on the side facing the first flange member F1 of the seal plate member 8 is affixed with rubber such as silicon rubber or a sheet made of elastic synthetic resin such as elastomer. The flange member F1 can be in close contact with no gap.

  The second flange support 4 includes a mounting base 11, a flange receiving member 12 provided on the mounting base 11, a disk-shaped seal plate member 13 serving as a gas pumping member, and the seal plate member 13. The seal plate member 13 can be advanced and retracted in the axial direction of the bonded rigid vinyl chloride pipe 1 by the hydraulic cylinder 14 connected thereto. Pulleys 15 and 15 are provided below the mounting base 11 so as to be movable on the rail 16. Further, the surface (pressure contact surface) on the side facing the second flange member F2 of the seal plate member 13 is affixed with rubber such as silicon rubber or a sheet made of elastic synthetic resin such as elastomer. The flange member F2 can be in close contact with no gap. An opening (not shown) is formed in the center of the seal plate member 13, and the opening communicates with a compressor 19 as a gas supply mechanism having a pressure sensor and a pressure gauge (not shown). Yes. In FIG. 2, the seal plate member 8 (13) and the hydraulic cylinder 9 (14) are omitted for convenience.

  Further, the pipe support 5 includes a mounting base 17 and a pipe receiving member 18 provided on the mounting base 17. The pipe receiving member 18 is also provided on the mounting base 6 of the first flange support base 3 and the mounting base 11 of the second flange support base 4 as an auxiliary.

  The flange receiving member 7 of the first flange support base 3, the flange receiving member 12 of the second flange support base 4, and the pipe receiving member 18 of the pipe support base 5 are provided on a coaxial line. Yes.

  Next, a sealability test method using the sealability test apparatus 2 for the joint portion of the joint hard vinyl chloride pipe 1 of the present embodiment having the above-described configuration will be described.

  First, the positions of the flange receiving member 7 of the first flange support base 3 and the flange receiving member 12 of the second flange support base 4 are set to the first flange member F1 of the joint rigid vinyl chloride pipe 1 to be tested. The second flange support 4 is moved so as to fit the interval of the second flange member F2, and fixed at a predetermined position (arrow 1 in FIG. 1).

  At this time, the seal plate member 8 of the first flange support base 3 and the seal plate member 13 of the second flange support base 4 are in the retreat limit position. Then, the first flange member F 1 is joined to the flange receiving member 7 of the first flange support base 3, the second flange member F 2 is joined to the flange receiving member 12 of the second flange support base 4, and the pipe support base 5. The main body of the hard vinyl chloride pipe 1 is placed.

  Subsequently, the hydraulic cylinder 9 is activated to move the seal plate member 8, the seal plate portion 8 is pressed against the right end of the first flange member F1, and the hydraulic cylinder 14 is activated to move the seal plate member 13. Then, both ends of the joined rigid vinyl chloride pipe 1 are sealed by press-contacting the seal plate portion 13 to the left end of the second flange member F2 (arrow 2 in FIG. 1).

  Next, the compressor 19 is driven, and a predetermined pressure is applied to the bonded rigid vinyl chloride pipe 1 from an opening (not shown) formed in the center of the seal plate member 13 of the second flange support base 4. Air is press-fitted until it becomes (arrow 3 in FIG. 1 and FIG. 4). If it does so, the press injection of the air from the compressor 19 will be stopped, the state will be maintained as it is, and the pressure in the joining rigid vinyl chloride piping 1 will be measured for a predetermined time with a pressure sensor (not shown). And if the fall of the pressure of predetermined time exceeds a reference value, the junction part a in the socket S of the joining rigid vinyl chloride piping 1, the junction part b of the 1st flange member F1, and the junction part c of the 2nd flange member F2 will be described. It is possible to diagnose that there is a possibility that a liquid or gas such as water may leak because at least one of them has a gap.

  Further, a surfactant solution such as soapy water is applied to the joint a in the socket S of the joint rigid vinyl chloride pipe 1, the joint b of the first flange member F1, and the joint c of the second flange member F2. If there are gaps in these joints, bubbles are generated there. Therefore, it is possible to efficiently determine whether or not there is a gap in the joint portion a, b, or c by visually observing the presence or absence of bubbles. Thus, according to the test method of the present invention, the location of the gap can also be determined.

  As a result of performing the test as described above, by excluding the bonded hard vinyl chloride pipe 1 in which leakage is recognized, only the suitable bonded hard vinyl chloride pipe 1 can be delivered to the site. Workability can be greatly improved. As described above, the leakage test of the bonded hard vinyl chloride pipe 1 is particularly important when a large amount of the bonded hard vinyl chloride pipe 1 is required.

  As mentioned above, although this invention has been demonstrated based on the said embodiment, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible. For example, the joint synthetic resin pipe is not limited to the hard vinyl chloride pipe and can be applied to various pipes. Further, the present invention is not limited to the case where two synthetic resin pipes are joined, and is also applicable to a joint synthetic resin pipe obtained by joining three or more synthetic resin pipes. Furthermore, the sealing property test apparatus of the present invention may be attached to the joint synthetic resin pipe manufacturing apparatus so that the joint synthetic resin pipe manufacturing and the sealing test can be performed in a series of operations.

It is a front view which shows the sealing performance test apparatus of the junction part of the joint synthetic resin piping which concerns on one Embodiment of this invention. It is a side view which shows the support stand of the flange member of the sealing performance test apparatus of the junction part of the joint synthetic resin piping which concerns on the same embodiment. It is a side view which shows the support stand of the joining hard vinyl chloride piping of the sealing performance test apparatus of the junction part of the joining synthetic resin piping which concerns on the embodiment. It is the schematic which shows the state at the time of the sealing test of the sealing performance test apparatus of the junction part of the joint synthetic resin piping in the embodiment.

Explanation of symbols

1 ... Bonded rigid polyvinyl chloride piping (bonding synthetic resin piping)
2 ... Sealability test apparatus 8 ... Seal plate member (sealing plate member)
13 ... Seal plate member (gas pressure feeding member)
19 ... Compressor (gas supply mechanism)
A1 ... 1st hard vinyl chloride piping (synthetic resin piping)
A2 ... Second hard vinyl chloride piping (synthetic resin piping)
S ... socket F1 ... first flange member F2 ... second flange members a, b, c ... joints

Claims (8)

An apparatus for testing a sealing state of a joint part of a joint synthetic resin pipe obtained by joining two or more synthetic resin pipes,
A first support base including a sealing plate member provided so as to be press-contactable to one end of the joint synthetic resin pipe;
A second support base provided with a gas-feeding member provided so as to be press-contactable to the other end of the joint synthetic resin pipe;
A gas supply mechanism connected to the gas pumping member,
The sealing plate member or the gas pressure feeding member is provided so as to be driven in the axial direction of the joint synthetic resin pipe , and the second support itself can be driven in the axial direction of the joint synthetic resin pipe. An apparatus for testing a sealing property of a joint portion of a joint synthetic resin pipe, characterized by being provided in the joint.   The flange sealing member is fixed to both ends of the joint synthetic resin pipe, and the sealing property testing device for the joint portion of the joint synthetic resin pipe according to claim 1. The pressure contact surface to one end of the joint synthetic resin pipe of the sealing plate member and the pressure contact surface to the other end of the joint synthetic resin pipe of the gas feeding member are made of elastic synthetic resin,
The joint of synthetic resin piping according to claim 1 or 2, wherein an air supply hole is formed in a pressure contact surface of the gas pressure feeding member, and the gas supply mechanism communicates with the air supply hole. Part sealability testing device. A method for testing a sealing state of a joint portion of a joint synthetic resin pipe obtained by joining two or more synthetic resin pipes,
The joint synthetic resin pipe is driven by driving a sealing plate member, a gas pressure feeding member connected to a gas supply mechanism, and a support base provided with the gas pressure feed member in the axial direction of the joint synthetic resin pipe. with sealed pressed against the sealing plate member at one end of, pressed against the gas pumping member to the other, closing the bonding synthetic resin piping,
A method for testing a sealing property of a joint portion of a joint synthetic resin pipe, wherein gas is supplied from the gas supply mechanism to the joint synthetic resin pipe through the gas pressure feeding member at a predetermined pressure.   5. The method for testing a sealing property of a joint portion of a joint synthetic resin pipe according to claim 4, wherein flange members are fixed to both ends of the joint synthetic resin pipe. The pressure contact surface to one end of the joint synthetic resin pipe of the sealing plate member and the pressure contact surface to the other end of the joint synthetic resin pipe of the gas feeding member are made of elastic synthetic resin,
An air supply hole is formed in the pressure contact surface of the gas pressure feeding member,
6. The method for testing a sealing property of a joint portion of a joint synthetic resin pipe according to claim 4, wherein the gas supply mechanism communicates with the air supply hole.   7. The method for testing the sealing property of a joint portion of a joint synthetic resin pipe according to claim 4, wherein the seal performance is determined based on a transition of pressure in the joint synthetic resin pipe.   The joint of synthetic resin pipes according to any one of claims 4 to 6, wherein the sealing performance is determined by detecting gas leakage from the joint part and both ends in the joint synthetic resin pipes. Part sealability test method.

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