CN214584565U - Non-metal gas drainage pipe negative pressure test equipment - Google Patents
Non-metal gas drainage pipe negative pressure test equipment Download PDFInfo
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- CN214584565U CN214584565U CN202120014487.4U CN202120014487U CN214584565U CN 214584565 U CN214584565 U CN 214584565U CN 202120014487 U CN202120014487 U CN 202120014487U CN 214584565 U CN214584565 U CN 214584565U
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- end cover
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Abstract
The utility model discloses a non-metal gas drainage pipe negative pressure test equipment, the device include the tubular product sample, tubular product sample level is placed on the support, tubular product sample both ends all are provided with the end cover, one of them be provided with the gas port on the end cover, the gas port passes through the high-pressure rubber pipe and is connected with the vacuum generator cooperation, the end cover all through centre gripping formula fixed establishment fixed mounting be in on the orificial ring flange of tubular product sample. The utility model discloses can solve present tubular product sample and be carrying out evacuation negative pressure and examine time measuring, the end cover is through ring flange interconnect, and the installation is dismantled and is wasted time and energy, and work efficiency is low, can't adapt to the big problem that detects work in batches.
Description
Technical Field
The utility model relates to a negative pressure test equipment technical field, in particular to non-metal gas drainage pipe negative pressure test equipment.
Background
The performance of the gas drainage pipe is directly related to the safety and reliability of the gas drainage process, the safety production under a coal mine is affected, and very serious results can be generated once static sparks occur, the gas drainage pipe is damaged by impact, the gas drainage pipe is sucked flatly and the like. In order to detect the performance of the gas drainage pipe, the current measures are mainly to install a plug on a flange at one end of a pipe sample for plugging, connect the flange at the other end with a vacuum generator, and vacuumize the pipe sample by using the vacuum generator to detect the performance of the gas drainage pipe.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a nonmetal gas drainage pipe negative pressure test equipment can avoid present tubular product sample when carrying out evacuation negative pressure and examine time measuring, and the end cover is through ring flange interconnect, and the installation is dismantled and is wasted time and energy, and work efficiency is low, can't adapt to the problem of big batch detection work.
In order to achieve the above object, the technical solution of the present invention is specifically as follows:
non-metal gas drainage pipe negative pressure test equipment, including the tubular product sample, tubular product sample level is placed on the support, tubular product sample both ends all are provided with the end cover, one of them be provided with the gas port on the end cover, the gas port passes through the high-pressure rubber pipe and is connected with the cooperation of vacuum generator, the end cover all through centre gripping formula fixed establishment fixed mounting in on the orificial ring flange of tubular product sample.
The clamping type fixing mechanism comprises a 7-shaped pressing plate, one end of the 7-shaped pressing plate is hinged to the side wall of the end cover, a stand column is vertically arranged on the outer wall of the other end of the 7-shaped pressing plate, a cam is connected with the top of the stand column through a pin shaft, a pressing rod is horizontally arranged on one side of the cam, an extruding plate is correspondingly arranged on the lower portion of the cam, an ejector rod is vertically arranged on the lower portion of the extruding plate, the tail end of the ejector rod penetrates through the 7-shaped pressing plate and is fixedly connected with a top plate arranged on the inner side of the 7-shaped pressing plate, and the top plate corresponds to the flange plate.
And a spring is arranged between the extrusion plate and the outer wall of the 7-shaped pressing plate and sleeved on the ejector rod.
One of the end covers is a sealing end, the other end cover is an air exhaust end, an air port is arranged on the air exhaust end, and the air port is connected with a vacuum generator in a matching mode through a high-pressure rubber pipe.
And sealing gaskets are arranged on the mounting surfaces of the sealing end and the air exhaust end.
The utility model has the advantages that: the utility model discloses a centre gripping formula fixed establishment is connected one of them end cover and vacuum generator with end cover difference fixed mounting on the orificial ring flange in tubular product sample both ends, carries out the evacuation operation, and easy operation is swift, has abandoned the connected form of existing bolt and ring flange, and work efficiency is low, drawback that intensity of labour is high. As a preferred embodiment, the clamping type fixing mechanism is in a structure form of a 7-shaped pressing plate, one end of the 7-shaped pressing plate is hinged with the side wall of the end cover, so that the 7-shaped pressing plate and the end cover can be connected into a whole, and the storage and use are convenient. Be provided with the spring between stripper plate and the 7 font clamp plate outer wall, can pressurize the extrusion force between stripper plate and the cam for the cam is difficult to rotated to initial position, has improved equipment security. One of the two end covers is a sealing end, the other end cover is an air exhaust end, the sealing end is used for plugging a pipe sample, and the air exhaust end is used for connecting a connecting component with a vacuum generator. In order to improve the air tightness of the equipment and the detection accuracy, the mounting surfaces of the sealing end and the air exhaust end are provided with sealing gaskets. The utility model discloses simulate nonmetal gas drainage pipe and be in the operating condition under the extreme negative pressure in the gas drainage system, satisfy gas drainage pipe negative pressure experiment requirement, reached gas drainage pipe safety mark and applied for the prerequisite, improved product quality through nonmetal gas drainage pipe negative pressure test, ensured that nonmetal gas drainage pipe does not take place to inhale flatly and destroy in the colliery in-process of use.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Figure 2 is a schematic view of the connection of the seal head to the clamp-on securing mechanism.
Fig. 3 is a schematic structural view of the clamp type fixing mechanism.
FIG. 4 is a schematic structural view of embodiment 2.
Detailed Description
Example 1
As shown in fig. 1-3, the negative pressure test equipment for the non-metal gas drainage pipe comprises a pipe sample 4, the pipe sample 4 is horizontally placed on a support 8, two ends of the pipe sample 4 are respectively provided with an end cover, one of the end covers is provided with an air port, the air port is connected with a vacuum generator 9 through a high-pressure rubber pipe 1 in a matching manner, the end covers are fixedly arranged on a flange 3 at the pipe opening of the pipe sample 4 through a clamping type fixing mechanism 7, the clamping type fixing mechanism 7 comprises a 7-shaped pressing plate 71, one end of the 7-shaped pressing plate 71 is hinged with the side wall of the end cover, a vertical column 78 is vertically arranged on the outer wall of the other end of the 7-shaped pressing plate 71, the top of the vertical column 78 is connected with a pin shaft connected with a cam 72, one side of the cam 72 is horizontally provided with a pressing rod 73, the lower part of the cam 72 is correspondingly provided with an extrusion plate 74, the lower part of the extrusion plate 74 is vertically provided with an ejector rod 76, the tail end of the ejector rod 76 penetrates through the 7-shaped pressing plate 71 and is fixedly connected with a top plate 77 arranged on the inner side of the 7-shaped pressing plate 71, the top plate 77 corresponds to the flange plate 3, a spring 75 is arranged between the outer walls of the extrusion plate 74 and the 7-shaped pressing plate 71, the spring 75 is sleeved on the ejector rod 76, one end cover is a sealing end 6, the other end cover is an air exhaust end 2, an air port is arranged on the air exhaust end 2, the air port is connected with the vacuum generator 9 through the high-pressure rubber pipe 1 in a matched mode, and sealing gaskets 5 are arranged on the mounting surfaces of the sealing end 6 and the air exhaust end 2.
When the utility model is used, in order to achieve the using effect, at least two clamping type fixing mechanisms 7 are used for fixing the end cover, when in concrete operation, firstly, the sealing end 6 is placed on the opening at one end of the pipe sample 4, an operator rotates the 7-shaped pressing plate 71 to enable one end of the 7-shaped pressing plate 71 to rotate to the rear part of the flange plate 3, then the pressing rod 73 is pulled, the pressing rod 73 drives the cam 72 to rotate, the small end of the cam 72 pushes the extrusion plate 74 to one end while rotating, the extrusion plate 74 drives the ejector rod 76 to move towards the inner side of the 7-shaped pressing plate 71, meanwhile, the ejector rod 76 pushes the top plate 77 to the flange plate 3 to enable the top plate 77 and the flange plate 3 to be mutually extruded and locked, because of the eccentric design of the cam 72 and the tension of the spring 75 on the extrusion plate 74, the ejector rod 76 and the top plate 77 can not return to the initial position, and similarly, the air exhaust end 2 is installed at the other end of the pipe sample 4, after the installation is finished, the vacuum generator 9 is started, and the pipe sample 4 is vacuumized to detect the performance of the gas drainage pipe.
The working principle is as follows: and (3) in a specified temperature range, exhausting air in the pipe sample 4 outwards through the vacuum generator 9 to form a specified negative pressure region, closing a three-way valve on the vacuum generator 9 for pressure maintaining for 2h when the negative pressure reaches the standard requirement of-0.097 MPa, and observing the change condition of the sample, whether the sample is flat sucked or not and whether the sample is damaged or not.
The specific test process is as follows:
1. the requirements of test equipment are as follows: the ultimate vacuum of the vacuum generator 9 is 6 x 10-2The power of the three-phase asynchronous motor is 1.1KW, the measuring range of the three-phase asynchronous motor matched with 1.1KW and a vacuum meter is-0.1 MPa-0 MPa, and the measuring precision is +/-0.001 MPa.
2. Sample preparation: the length of the sample (excluding the pipe joint) is 5 times of the nominal diameter of the pipe, or 1000mm, the longer of the two, and the number of the samples is three.
3. The experimental steps are as follows:
1) removing stains or other polluted areas on the surface of the pipe sample 4, cleaning and drying the pipe sample, and standing for 24 hours at the ambient temperature (23 +/-2) DEG C;
2) according to the test standard requirements, a proper sealing plug 6 and an air extraction end 2 are selected to seal the pipe sample 4, and the pipe sample is adjusted to be properly installed on a support 8;
3) connecting the air exhaust end 2 of the adjusted pipe sample 4 with a vacuum generator 9 through a high-pressure rubber pipe 1, and adjusting the pipe sample to be proper;
4) switching on a power supply, applying negative pressure to the sealed pipe sample 4 to (0.097 +/-0.001) MPa, and maintaining the pressure for 2h, wherein the environmental temperature is kept at (20 +/-2) DEG C in the pressure maintaining process;
5) observing and recording the change of the sample: stopping the test when the specified time is reached or the sample is damaged and is sucked flat;
6) and (3) analysis: observing whether the sample is flat or damaged through the change of the pipe sample 4, and analyzing the performance of the gas drainage pipe sample; if the sample is damaged within the range of being less than 0.1 time of the length of the sample from the joint of the sealing plug 6 or the air exhaust end 2, the experimental result is invalid, and the sample is taken for retesting.
Example 2
As shown in fig. 4, the 7-shaped pressing plate 71 of the clamping type fixing mechanism 7 is replaced by an n-shaped structure, the n-shaped structure is sleeved on the end cover and the flange plate 3, the pressing rod 73 is pressed down, the cam 72 is rotated, the top plate 77 is tightly pressed on the flange plate 3, and the end cover and the flange plate 3 are mutually fixed.
The other structures and the use method are the same as those of embodiment 1.
Claims (5)
1. Non-metal gas drainage pipe negative pressure test equipment, its characterized in that: including tubular product sample (4), tubular product sample (4) level is placed on support (8), tubular product sample (4) both ends all are provided with the end cover, one of them be provided with the gas port on the end cover, the gas port passes through high-pressure rubber pipe (1) and is connected with vacuum generator (9) cooperation, the end cover all through centre gripping formula fixed establishment (7) fixed mounting in on orificial ring flange (3) of tubular product sample (4).
2. The non-metal gas drainage pipe negative pressure test equipment of claim 1, wherein: centre gripping formula fixed establishment (7) include 7 font clamp plate (71), 7 font clamp plate (71) one end with the end cover lateral wall is articulated, vertically on 7 font clamp plate (71) other end outer wall be provided with stand (78), stand (78) top pin hub connection cam (72), cam (72) one side level sets up depression bar (73), cam (72) lower part correspondence sets up stripper plate (74), the vertical ejector pin (76) that sets up in stripper plate (74) lower part, ejector pin (76) end runs through 7 font clamp plate (71) with set up in roof (77) fixed connection of 7 font clamp plate (71) inboard, roof (77) with ring flange (3) correspond each other.
3. The non-metal gas drainage pipe negative pressure test equipment of claim 2, wherein: a spring (75) is arranged between the extrusion plate (74) and the outer wall of the 7-shaped pressing plate (71), and the spring (75) is sleeved on the ejector rod (76).
4. The non-metal gas drainage pipe negative pressure test equipment of claim 1 or 2, wherein: one of the end covers is a sealing end (6), the other end cover is an air exhaust end (2), and an air port is arranged on the air exhaust end (2).
5. The non-metal gas drainage pipe negative pressure test equipment of claim 4, wherein: and sealing gaskets (5) are arranged on the mounting surfaces of the sealing end (6) and the air exhaust end (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120014487.4U CN214584565U (en) | 2021-01-05 | 2021-01-05 | Non-metal gas drainage pipe negative pressure test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120014487.4U CN214584565U (en) | 2021-01-05 | 2021-01-05 | Non-metal gas drainage pipe negative pressure test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214584565U true CN214584565U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120014487.4U Active CN214584565U (en) | 2021-01-05 | 2021-01-05 | Non-metal gas drainage pipe negative pressure test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214584565U (en) |
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2021
- 2021-01-05 CN CN202120014487.4U patent/CN214584565U/en active Active
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