CN115615689A - Steam trap performance test device - Google Patents
Steam trap performance test device Download PDFInfo
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- CN115615689A CN115615689A CN202211300041.3A CN202211300041A CN115615689A CN 115615689 A CN115615689 A CN 115615689A CN 202211300041 A CN202211300041 A CN 202211300041A CN 115615689 A CN115615689 A CN 115615689A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a steam trap performance test device, which comprises an air supply pipeline, a water supply pipeline, a test pipeline, a communication pipeline and a switching structure, wherein the air supply pipeline is provided with a gas storage device, the gas storage device stores high-pressure air, the water supply pipeline is provided with a water storage device, the water storage device stores demineralized water, the test pipeline is provided with a trap to be tested and a first pressure gauge, the first pressure gauge is arranged on the front side of the test pipeline in the flow direction, the communication pipeline is connected among the air supply pipeline, the water supply pipeline and the test pipeline, the communication pipeline has a first communication state and a second communication state, the air supply pipeline is only communicated with the test pipeline in the first communication state so as to supply air to the test pipeline, the air supply pipeline is sequentially communicated with the water supply pipeline and the test pipeline in the second communication state so as to supply water to the test pipeline, and the switching structure is arranged on the communication pipeline so as to switch the communication pipeline between the first communication state and the second communication state.
Description
Technical Field
The invention relates to the technical field of drain valve detection, in particular to a steam drain valve performance testing device.
Background
Steam traps are generally defined as those valves used in steam lines or equipment that automatically drain condensed water while preventing steam from leaking with the water. In order to ensure the quality of the valves, the state provides a plurality of standards, mainly including GB/T12251-2005 test method for steam trap and GB/T22654-2008 technical conditions for steam trap. At present, a plurality of test projects about a steam trap are provided, and the test projects mainly include a shell strength test, an action test, a minimum working pressure test, a maximum back pressure test, an air exhaust capacity test, a maximum supercooling degree test, a minimum supercooling degree test, an air leakage test, a heat condensed water discharge capacity test and the like, but the test conditions of most of the tests need to utilize a boiler to heat normal-temperature desalted water to a high-temperature high-pressure state, wherein the steam preparation cost is high, the steam preparation period is long, the test cost of the trap is overhigh, the test time is overlong, and certain dangerousness exists in the steam preparation process.
Disclosure of Invention
The invention mainly aims to provide a steam trap performance test device, and aims to solve the problems of overhigh test cost and overlong test time of the conventional trap.
In order to achieve the above object, the present invention provides a steam trap performance testing apparatus, comprising:
the air supply pipeline is provided with an air storage device, and high-pressure air is stored in the air storage device;
the water supply pipeline is provided with a water storage device, and demineralized water is stored in the water storage device;
the device comprises a test pipeline, a drain valve to be tested and a first pressure gauge are arranged on the test pipeline, and the first pressure gauge is positioned on the front side of the test pipeline in the flow direction;
the communication pipeline is connected among the air supply pipeline, the water supply pipeline and the test pipeline, the communication pipeline has a first communication state and a second communication state, the air supply pipeline is only communicated with the test pipeline in the first communication state so as to supply air to the test pipeline, and the air supply pipeline is sequentially communicated with the water supply pipeline and the test pipeline in the second communication state so as to supply water to the test pipeline; and the number of the first and second groups,
and the switching structure is arranged on the communicating pipeline and used for switching the communicating pipeline between the first communicating state and the second communicating state.
Optionally, the communication line comprises a short-circuit line which can be arranged in parallel with the water supply line;
the switching structure comprises a short-circuit switch valve arranged on the short-circuit pipeline and a water supply switch device arranged on the water supply pipeline.
Optionally, the air supply line includes a first air supply branch pipe and a second air supply branch pipe, a first air storage tank and a second air storage tank are respectively arranged on the first air supply branch pipe and the second air supply branch pipe, and the air storage device includes the first air storage tank and the second air storage tank;
the communication pipeline further comprises an air passing branch, an air passing switch valve is arranged on the air passing branch, one end of the air passing branch is connected to the pipeline for communicating the first air storage tank with the water storage device, and the other end of the air passing branch is connected to an air outlet of the second air storage tank;
one end of the short-circuit pipeline is communicated with one end of the gas passing branch, and the other end of the short-circuit pipeline is connected to a water outlet of the water storage device;
at least one of the first air supply branch pipe and the second air supply branch pipe can be communicated with the water storage device or the test pipeline.
Optionally, the water supply pipeline includes a first water supply branch pipe and a second water supply branch pipe, a first water storage tank and a second water storage tank are respectively arranged on the first water supply branch pipe and the second water supply branch pipe, and the water storage device includes the first water storage tank and the second water storage tank;
one ends of the first water supply branch pipe and the second water supply branch pipe are communicated with the testing pipeline, and the other ends of the first water supply branch pipe and the second water supply branch pipe are respectively connected to two ends of the gas passing branch pipe;
at least one of the first water supply branch pipe and the second water supply branch pipe is communicated with the first air supply branch pipe and the test pipeline and/or the second air supply branch pipe and the test pipeline.
Optionally, the water supply pipeline includes a first water supply branch pipe and a second water supply branch pipe, a first water storage tank and a second water storage tank are respectively arranged on the first water supply branch pipe and the second water supply branch pipe, and the water storage device includes the first water storage tank and the second water storage tank;
one ends of the first water supply branch pipe and the second water supply branch pipe are communicated with an air outlet of the air storage device, and the other ends of the first water supply branch pipe and the second water supply branch pipe are communicated with the test pipeline;
the short-circuit pipelines are connected with the first water supply branch pipe and the second water supply branch pipe in parallel;
at least one of the first water supply branch pipe and the second water supply branch pipe is communicated with the gas storage device and the testing pipeline.
Optionally, the air supply pipeline is provided with an air compressor, an air outlet of the air compressor is communicated with an air inlet of the first air supply branch pipe, and an air inlet of the second air supply branch pipe is connected to a pipeline through which the air compressor is communicated with the first air supply branch pipe;
a first air supply branch pipe is provided with a first air supply valve group, and the first air supply valve group is positioned between the air compressor and the first air storage tank;
and a second air supply valve bank is arranged on the second air supply branch pipe and is positioned between the air compressor and the second air storage tank.
Optionally, the steam trap performance testing apparatus further comprises a recovery device, the recovery device comprising:
a reservoir;
the first drainage pipeline is communicated with the reservoir and the drain valve to be tested; and the number of the first and second groups,
the first liquid level meter is used for displaying the liquid level of the reservoir.
Optionally, the recycling apparatus further comprises:
the circulating pipeline is communicated with the reservoir and the water storage device;
the circulating pump is arranged on the circulating pipeline; and the number of the first and second groups,
and the circulating switch device is arranged on the circulating pipeline and used for opening or closing the circulating pipeline.
Optionally, the recycling device further comprises a one-way valve disposed in the first drain line for providing a one-way flow of water to the reservoir.
Optionally, the steam trap performance test device further comprises an emptying pipeline and an emptying switch device arranged on the emptying pipeline, the emptying pipeline is communicated with the test pipeline, and the emptying switch device is used for opening or closing the emptying pipeline.
In the technical scheme of the invention, when the drain valve to be tested is tested, the switching structure is adjusted to enable the communication pipeline to be in a first communication state, at the moment, the air supply pipeline is disconnected from the water supply pipeline, the air supply pipeline is communicated with the test pipeline to perform action test on the drain valve to be tested, when the numerical value on the first pressure gauge reaches a specified numerical value, the air supply pipeline is disconnected, if the numerical value on the first pressure gauge cannot be kept unchanged within a certain time (a plurality of seconds), the action test is unqualified, if the numerical value on the first pressure gauge can be kept unchanged within a certain time (a plurality of seconds), the switching structure is continuously adjusted to enable the communication pipeline to be in a second communication state, the air supply pipeline is firstly communicated with the water supply pipeline, then the water supply pipeline is communicated with the test pipeline to continue to perform action test on the drain valve to be tested, the outlet of the drain valve to be tested is observed, if no water flows out from the outlet, the action test is unqualified, if water flows out from the outlet, the water supply pipeline is disconnected, the drain valve to be repeatedly performed, and the drain valve to be capable of performing at least 3 complete circulation processes, and the action of the drain valve to be qualified. Therefore, through the switching structure and the communication pipeline, action tests under different media are respectively carried out on the drain valve to be tested so as to ensure that the drain valve to be tested meets the standard requirements, and meanwhile, high-pressure air is directly conveyed through the air storage device so as to avoid additionally arranging a boiler for preparing steam, so that the testing cost and the testing time are favorably reduced, the danger of steam preparation is avoided, and the problems of overhigh testing cost and overlong testing time of the drain valve are solved. In addition, the cycle number of the experiment is continuously increased, so that the cycle number of the experiment is far more than 3 times and is integral multiple of 3, and the steam trap performance testing device can also be used for testing the service life of the trap to be tested.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a steam trap performance testing apparatus according to the present invention;
FIG. 2 is a flow chart of the performance test apparatus for steam trap provided by the present invention.
The reference numbers indicate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Steam traps are generally defined as those valves used in steam lines or equipment that automatically drain condensed water while preventing steam from leaking with the water. In order to ensure the quality of the valves, the state has provided standards, and GB/T12251-2005 test method for steam trap and GB/T22654-2008 technical conditions for steam trap are the main ones. At present, a plurality of test projects about a steam trap mainly include a shell strength test, an action test, a minimum working pressure test, a maximum back pressure test, an air exhaust capacity test, a maximum supercooling degree test, a minimum supercooling degree test, an air leakage test, a heat condensed water discharge capacity test and the like, but the test conditions of most of the tests are that a boiler is used for heating normal-temperature desalted water to a high-temperature high-pressure state, wherein the steam preparation cost is high, the steam preparation period is long, the test cost of the trap is overhigh, the test time is overlong, and certain dangerousness exists in the steam preparation process.
In view of the above, the invention provides a steam trap performance test device, which aims to solve the problems of overhigh test cost and overlong test time of the conventional trap. FIG. 1 is a schematic structural view of an embodiment of a steam trap performance testing apparatus according to the present invention, and FIG. 2 is a flow chart of the steam trap performance testing apparatus according to the present invention.
Referring to fig. 1, the steam trap performance testing apparatus 100 includes an air supply pipeline 1, a water supply pipeline 2, a testing pipeline 3, a communicating pipeline 4 and a switching structure 5, the air supply pipeline 1 is provided with a gas storage device 13, the gas storage device 13 stores high-pressure air, the water supply pipeline 2 is provided with a water storage device 23, the water storage device 23 stores demineralized water, the testing pipeline 3 is provided with a trap 8 to be tested and a first pressure gauge 31, the first pressure gauge 31 is located at a front side of the testing pipeline 3 in a flow direction, the communicating pipeline 4 is connected between the air supply pipeline 1, the water supply pipeline 2 and the testing pipeline 3, the communicating pipeline 4 has a first communicating state and a second communicating state, in the first communicating state, the air supply pipeline 1 is only communicated with the testing pipeline 3 to supply air to the testing pipeline 3, in the second communicating state, the air supply pipeline 1 is communicated with the water supply pipeline 2 and the testing pipeline 3 in sequence to supply water to the testing pipeline 3, and the switching structure 5 is provided on the communicating pipeline 4 to enable the communicating pipeline 4 to be switched between the first communicating state and the second communicating state.
In the technical scheme of the invention, when the drain valve to be tested is tested, the switching structure 5 is adjusted to enable the communication pipeline 4 to be in a first communication state, at the moment, the air supply pipeline 1 is disconnected from the water supply pipeline 2, the air supply pipeline 1 is communicated with the test pipeline 3 to conduct an action test on the drain valve 8 to be tested, the first pressure gauge 31 is observed, when the numerical value on the first pressure gauge 31 reaches a specified numerical value, the air supply pipeline 1 is disconnected, if the numerical value on the first pressure gauge 31 cannot be kept unchanged within a certain time (a plurality of seconds), the action test is unqualified, the switching structure 5 is continuously adjusted to enable the communication pipeline 4 to be in a second communication state, the air supply pipeline 1 is disconnected from the test pipeline 3, the air supply pipeline 1 is firstly communicated with the water supply pipeline 2, then the water supply pipeline 2 is communicated with the test pipeline 3, so as to continue the action test on the drain valve 8 to be tested, the outlet of the drain valve 8 to be tested is observed, if no water flows out within a certain time (a plurality of seconds), the action test is performed, the drain valve 8 to be qualified, and the performance can be repeated. Therefore, through the switching structure 5 and the communication pipeline 4, action tests under different media are respectively carried out on the drain valve 8 to be tested so as to ensure that the drain valve 8 to be tested meets the standard requirements, and meanwhile, high-pressure air is directly conveyed through the air storage device 13 so as to avoid additionally arranging a boiler to prepare steam, so that the test cost and the test time are favorably reduced, the danger of steam preparation is reduced, and the problems of overhigh test cost and overlong test time of the drain valve are solved. In addition, the steam trap performance testing apparatus 100 may also be used to test the life of the trap 8 to be tested by increasing the number of cycles of the test so that the number of cycles of the test is much greater than 3 and is an integer multiple of 3.
It should be noted that, the steam trap performance testing apparatus 100 provided by the present invention has no heat source, and is not suitable for detecting a steam trap with a temperature requirement, such as a thermo-static steam trap or a thermodynamic steam trap, but is only suitable for a mechanical steam trap.
Further, the communicating pipeline 4 includes a short-circuit pipeline 41 which can be connected with the water supply pipeline 2 in parallel, the switching structure 5 includes a short-circuit switch valve arranged on the short-circuit pipeline 41 and a water supply switch device arranged on the water supply pipeline 2, when the short-circuit switch valve is opened and the water supply switch device is closed, the air supply pipeline 1 is switched to be communicated with the test pipeline 3 so that high-pressure air in the air storage device 13 flows to the test pipeline 3, the communicating pipeline 4 forms a first communication state, when the short-circuit switch valve is closed and the water supply switch device is opened, the air supply pipeline 1 is firstly switched to be communicated with the water supply pipeline 2 and then the water supply pipeline 2 is communicated with the test pipeline 3 so that water in the water storage device 23 flows to the test pipeline 3, and the communicating pipeline 4 forms a second communication state. Of course, in other embodiments, the switching mechanism 5 may also be a three-way valve, the air outlet of the air supply line 1 is communicated with the inlet of the three-way valve, and two outlets of the three-way valve are respectively communicated with the short-circuit line 41 and the water supply line 2.
In order to enable the air supply pipeline 1 to continuously supply air, in this embodiment, the air supply pipeline 1 includes a first air supply branch pipe 11 and a second air supply branch pipe 12, the first air supply branch pipe 11 and the second air supply branch pipe 12 are respectively provided with a first air storage tank 131 and a second air storage tank 132, the air storage device 13 includes the first air storage tank 131 and the second air storage tank 132, the communication pipeline 4 further includes an air passing branch pipe 42, the air passing branch pipe 42 is provided with an air passing switch valve 421, one end of the air passing branch pipe 42 is connected to a pipeline through which the first air storage tank 131 is communicated with the water storage device 23, the other end of the air passing branch pipe 42 is connected to an air outlet of the second air storage tank 132, one end of the short circuit 41 is communicated with one end of the air passing branch pipe 42, the other end of the short circuit 41 is connected to a water outlet of the water storage device 23, at least one of the first air supply branch pipe 11 and the second air supply branch pipe 12 can be communicated with the water storage device 23 or the test pipeline 3, when the communication pipeline 4 is in a first communication state, the first air supply branch pipe 11 is communicated with the test pipeline 3, and the first air supply branch pipe 11 is communicated with the high-pressure test pipeline 3, and the first air supply branch pipe 42 is communicated with the test pipeline 3; the one end intercommunication of short circuit pipeline 41 the other end of air branch 42, at this moment, first air supply branch pipe 11 passes through in proper order air branch 42 and short circuit pipeline 41 with test pipeline 3 intercommunication, so that high-pressure air flow in the first gas holder 131 flows to test pipeline 3, second air supply branch pipe 12 passes through short circuit pipeline 41 intercommunication test pipeline 3, so that high-pressure air flow in the second gas holder 132 flows to test pipeline 3, works as when communicating pipe 4 is in the second intercommunication state, first air supply branch pipe 11 with water storage device 23 intercommunication, simultaneously, second air supply branch pipe 12 passes through air branch 42 can with water storage device 23 intercommunication, so, through air branch 42 makes first air supply branch pipe with second air supply branch pipe can respectively to test pipeline 3 or water storage device 23 air feed, so that when the gas in first gas holder 131 or one of them in the second gas holder 132 is not enough, switch to another gas holder in order to guarantee air supply pipeline 1 can be continuous air supply. It is understood that the number of branches in the gas supply line 1 includes, but is not limited to, two branches.
It should be noted that, in order to facilitate switching between the first air supply branch pipe 11 and the second air supply branch pipe 12, a second air supply switch valve 121 is disposed on the second air supply branch pipe 12.
In order to control the pressure of the first air tank 131, a second pressure gauge is connected to the first air tank 131 to detect the pressure of the first air tank 131, and in order to ensure the safety of the first air tank 131, a safety valve of the first air tank 131 is connected to the first air tank 131.
In order to facilitate the control of the pressure of the second air tank 132, a third pressure gauge is connected to the second air tank 132 for detecting the pressure of the second air tank 132, and in order to ensure the safety of the second air tank 132, a safety valve of the second air tank 132 is connected to the second air tank 132.
In order to continuously perform liquid experiments and gas experiments, in this embodiment, the water supply pipeline 2 includes a first water supply branch pipe 21 and a second water supply branch pipe 22, a first water storage tank 231 and a second water storage tank 232 are respectively disposed on the first water supply branch pipe 21 and the second water supply branch pipe 22, the water storage device 23 includes the first water storage tank 231 and the second water storage tank 232, one end of the first water supply branch pipe 21 and one end of the second water supply branch pipe 22 are both communicated with the test pipeline 3, the other end of the first water supply branch pipe 21 and the other end of the second water supply branch pipe 22 are respectively connected at both ends of the air flow branch pipe 42, the first water supply branch pipe 21 and at least one of the second water supply branch pipes 22 are communicated with the first water supply branch pipe 11 and the test pipeline 3 and/or the second air supply branch pipe 12 and the test pipeline 3, when the communication pipeline 4 is in a second communication state, the first air supply branch pipe 11 can be communicated with the first water storage tank 231 so that the water of the first water storage tank 231 flows to the test pipeline 3, the first water supply pipe 232 and the second air supply pipe 232 are also communicated with the test pipeline 42, so that the water storage tank 231 and the second water supply pipe 232 can flow to the test pipeline 3, when the communication pipeline 4 is in the test pipeline 232, the test pipeline 231 and the test pipeline 232, the water supply pipeline 3, the water supply pipeline 231 and the test pipeline 232 can also communicate with the test pipeline 3, so that the water storage tank 3, the water supply pipeline 232, the water supply pipeline 231 and the water supply pipeline 232 can communicate with the test pipeline 3, the test pipeline 232, the water supply pipeline 3, the test pipeline 232, the water storage tank 3 can also communicate with the test pipeline 3, the test pipeline 232, so that the water supply pipeline 231 and the water supply pipeline 3 can communicate with the water supply pipeline 3, the water supply pipeline 232, the test pipeline 3 and the water storage tank 3 and the test pipeline 232, the test pipeline 3 can communicate with the test pipeline 232, so that the water supply pipeline 3, the water supply pipeline 232, the water supply pipeline 3 can communicate with the test pipeline 232, the test pipeline 3, the water supply pipeline 232, the water supply pipeline 231 and the test pipeline 232, the water supply pipeline 232, or, make the second air supply branch pipe 12 can communicate the first water storage tank 231 with test pipeline 3 and/or the second water storage tank 232 with test pipeline 3, in order when the gas in one of them gas holder in the first gas storage tank 131 or the second gas storage tank 132 is not enough, switch to another gas storage tank in order to guarantee to water storage device 23 supplies gas continuously, simultaneously first water storage tank 231 or when the water in one of them water storage tank in the second water storage tank 232 is not enough, switch to another water storage tank in order to guarantee to test pipeline 3 supplies water continuously, thereby make steam trap performance test device 100 can carry out liquid experiment or gas experiment in succession.
In order to facilitate the control first water supply branch pipe 21, be equipped with first water supply ooff valve 211 and third water supply ooff valve 212 on the first water supply branch pipe 21, first water supply ooff valve 211 is located cross gas branch road 42 with between the first water storage tank 231, third water supply ooff valve 212 is located first water storage tank 231 with between the test pipeline 3, through first water storage tank 231's both ends set up first water supply ooff valve 211 with second water supply ooff valve 221, not only can control opening or closing of first water supply branch pipe 21, can also with first water storage tank 231 keeps apart to the maintenance first water storage tank 231. Furtherly, be equipped with the second liquid level gauge on the first water storage tank 231, so that observe the liquid level of first water storage tank 231, for the convenience of going to first water storage tank 231 adds water, be connected with first inlet tube on the first water storage tank 231, be equipped with first water inlet switch valve on the first inlet tube. In order to facilitate the discharge of air in the first water storage tube, a first exhaust tube is connected to the first water storage tank 231, a first exhaust switch valve is disposed on the first exhaust tube, and in addition, a first water storage tank 231 safety valve is connected to the first water storage tank 231 to ensure the safety of the first water storage tank 231.
In order to facilitate the control the second water supply branch pipe 22, the second water supply branch pipe 22 is provided with a second water supply switch valve 221 and a fourth water supply switch valve 222, the second water supply switch valve 221 is located the air passing branch 42 and between the second water storage tanks 232, the fourth water supply switch valve 222 is located between the second water storage tanks 232 and the test pipeline 3, through the third water supply switch valve 212 and the fourth water supply switch valve 222 are arranged at two ends of the second water storage tanks 232, not only the opening or closing of the second water supply branch pipe 22 can be controlled, but also the second water storage tanks 232 can be isolated, so as to overhaul the second water storage tanks 232. Further, be equipped with the third level gauge on the second water storage tank 232 to observe the liquid level of second water storage tank 232, for the convenience of go to second water storage tank 232 adds water, be connected with the second inlet tube on the second water storage tank 232, be equipped with the second on-off valve that intakes on the second inlet tube. In order to facilitate the discharge of air in the second water storage pipe, a second exhaust pipe is connected to the second water storage tank 232, a second exhaust switch valve is disposed on the second exhaust pipe, and in addition, in order to ensure the safety of the second water storage tank 232, a second water storage tank 232 safety valve is connected to the second water storage tank 232.
In order to ensure the safety of the first water storage tank 231 and the second water storage tank 232, when water is added, the volume of the water in the first water storage tank 231 and the second water storage tank 232 is generally not more than 70% of the volume of the first water storage tank 231 and the second water storage tank 232.
In order to enable the water supply pipeline 2 to continuously supply water, in this embodiment, the water supply pipeline 2 includes a first water branch pipe 21 and a second water branch pipe 22, the first water branch pipe 21 and the second water branch pipe 22 are respectively provided with a first water storage tank 231 and a second water storage tank 232, the water storage device 23 includes the first water storage tank 231 and the second water storage tank 232, one end of the first water branch pipe 21 and one end of the second water branch pipe 22 are both communicated with the gas outlet of the gas storage device 13, the other end of the first water branch pipe 21 and the other end of the second water branch pipe 22 are both communicated with the test pipeline 3, the short-circuit pipeline 41 is both arranged in parallel with the first water branch pipe 21 and the second water branch pipe 22, at least one of the first water branch pipe 21 and the second water branch pipe 22 is communicated with the gas storage device 13 and the test pipeline 3, when the communication pipeline 4 is in a second communication state, the water supply pipeline 1 can be communicated with the first water storage tank 231, so that water of the first water storage tank 231 flows to the test pipeline 3, and simultaneously flows through the gas supply pipeline 1 to the second water branch pipe 232, so that water branch pipe 232 is not enough to test water storage tank 2, when the water supply pipe 232 is in the water storage tank 2, the water supply tank 2, the test tank is not enough, so that water supply pipe 232, the water supply pipe 232 is not enough, so that water supply tank 2 can be communicated with the water storage tank 2, so that water storage tank 2, the water supply tank 2, so that water supply tank 2 is not enough.
In order to in time to first gas holder 131 perhaps second gas holder 132 tonifying qi, in this embodiment, air supply line 1 is equipped with air compressor 14, the gas outlet intercommunication of air compressor 14 the air inlet of first air supply branch pipe 11, the air inlet of second air supply branch pipe 12 is connected the air compressor 14 with on the pipeline of first air supply branch pipe 11 intercommunication, be equipped with first air supply branch pipe 111 on the first air supply branch pipe 11, first air supply branch pipe 111 is located the air compressor 14 with between the first gas holder 131, be equipped with second tonifying qi valves 122 on the second air supply branch pipe 12, second tonifying qi valves 122 are located the air compressor 14 with between the second gas holder 132, so set up through setting up the air compressor 14, in order to first gas holder 131 perhaps when the gas in the second gas holder 132 is not enough, in time carry out the tonifying qi, in order to guarantee air supply line 1 can the continuous air supply, simultaneously through setting first air supply branch pipe 111 with second tonifying qi valves 122, so that the air compressor 14 respectively to first gas holder 131 perhaps second gas holder 132 tonifying qi. Further, in order to ensure the safety of the first air tank 131 and the second air tank 132 during air supply, the pressure of the first air tank 131 and the second air tank 132 is generally not more than 70% of the design pressure.
It should be noted that, the first air supply branch pipe 111 and the second air supply valve group 122 may be a single valve or multiple valves, and the present invention is not limited thereto, and specifically, in this embodiment, the first air supply branch pipe 111 and the second air supply valve group 122 include air supply valve groups, and the air supply valve groups include air supply electric valves and air supply stop valves, and a double-valve arrangement is adopted to improve the safety of the air supply pipeline 1.
In order to observe the drainage condition of the to-be-tested steam trap 8, in this embodiment, the steam trap performance testing apparatus 100 further includes a recycling apparatus 6, the recycling apparatus 6 includes a reservoir 61, a first drainage pipeline 62 and a first liquid level meter 63, the first drainage pipeline 62 connects the reservoir 61 with the to-be-tested steam trap 8, the first liquid level meter 63 is used for displaying the liquid level of the reservoir 61, and the arrangement is such that the water drained from the to-be-tested steam trap 8 is conveyed into the reservoir 61 through the first drainage pipeline 62 and collected for centralized processing, and meanwhile, the arrangement of the first liquid level meter 63 is used for an experimenter to observe the drainage condition of the to-be-tested steam trap 8.
In order to increase the water utilization rate, in this embodiment, the recycling device 6 further includes a circulation pipeline 64, a circulation pump 65, and a circulation switch device 66, the circulation pipeline 64 communicates the reservoir 61 with the water storage device 23, the circulation pump 65 is disposed on the circulation pipeline 64, and the circulation switch device 66 is disposed on the circulation pipeline 64 for turning on or off the circulation pipeline 64, so that the water in the reservoir 61 is delivered to the water storage device 23 through the circulation pipeline 64 and the circulation pump 65, so as to enable the water to be recycled, which helps increase the water utilization rate.
Further, the water storage device 23 includes the first water storage tank 231 and the second water storage tank 232, the circulation pipeline 64 includes a circulation main pipe and a first circulation branch pipe and a second circulation branch pipe arranged in parallel, one end of the circulation main pipe is communicated with the reservoir 61, the first circulation branch pipe is communicated with the other end of the circulation main pipe and the first water storage tank 231, and the second circulation branch pipe is communicated with the other end of the circulation main pipe and the second water storage tank 232. The circulation switching device 66 includes a first circulation switching valve 661 provided on the circulation main pipe, a second circulation switching valve 662 provided on the first circulation branch pipe, and a third circulation switching valve 663 provided on the second circulation branch pipe, so as to respectively supply water to the first water storage tank 231 or the second water storage tank 232.
In order to avoid ponding is left in the supply channel, in this embodiment, recovery unit 6 is still including the intercommunication the second drain line 68 of test pipeline 3, and locate the drainage trip valve of second drain line 68, so, after the drainage action experiment, close supply channel 2 opens the drainage trip valve on the second drain line 68, will demineralized water is discharged in the test pipeline 3, prevents to leave ponding in the test pipeline.
In order to prevent the water in the reservoir 61 from flowing back, in this embodiment, the recycling device 6 further includes a check valve 67 disposed in the first drain line 62 to make the water flow to the reservoir 61 in one direction so as to prevent the water in the reservoir 61 from flowing back to the drain valve 8 to be tested.
In order to release the pressure in the test pipeline 3 in time, in this embodiment, the steam trap performance testing apparatus 100 further includes a vent pipeline 7 and a vent switch device 71 disposed on the vent pipeline 7, the vent pipeline 7 is communicated with the test pipeline 3, the vent switch device 71 is configured to open or close the vent pipeline 7, and after the motion test (the medium in the test pipeline is air) is completed, the vent switch device 71 is opened to release the pressure in the test pipeline 3, which is beneficial to timely restoring the steam trap performance testing apparatus 100 to an initial state, avoiding pressure remaining in the test pipeline 3, and being beneficial to safety of the steam trap performance testing apparatus 100, and in addition, when the pressure in the test pipeline 3 is too high during the test process, a part of the pressure is released through the vent pipeline 7, so as to avoid the pressure in the test pipeline 3 being too high.
It should be noted that, the emptying switch device 71 may be a single valve or multiple valves, which is not limited in this embodiment, specifically, in this embodiment, the emptying switch device 71 includes an emptying electric valve and an emptying stop valve, and a double-valve arrangement is adopted to improve the safety of the emptying pipeline 7.
The experimental procedure of the steam trap performance testing apparatus will be described with reference to the above embodiments, and specifically, refer to fig. 2:
before testing the trap to be tested, the trap to be tested 8 needs to be installed on a testing device, the communicating pipeline 4 is in a second communicating state by adjusting the switching structure 5, at the moment, a certain amount of demineralized water is introduced into the trap to be tested 8, then, the water supply pipeline 2 is closed, the water discharge cut-off valve on the second water discharge pipeline 68 is opened, the demineralized water in the testing pipeline is discharged, then, the water discharge cut-off valve on the second water discharge pipeline 68 is closed, the switching structure 5 is adjusted to enable the communicating pipeline 4 to be in a first communicating state, at the moment, the air supply pipeline 1 is disconnected with the water supply pipeline 2, the air supply pipeline 1 is communicated with the testing pipeline 3 to perform an action test on the trap to be tested 8 (at the moment, the medium in the testing pipeline is air), the first pressure gauge 31 is observed, when the value on the first pressure gauge 31 reaches a specified value, the air supply pipeline 1 is disconnected, if the value on the first pressure gauge 31 cannot be kept unchanged within a certain time (a plurality of seconds), the action test is unqualified, if the value on the first pressure gauge 31 can be kept within a certain time (a plurality of seconds), the second pressure gauge 71 is opened, the air supply pipeline is closed, the switching structure 71 is closed, and the second switching structure is connected with the second draining device 71; continuing to adjust the switching structure 5 to enable the communicating pipeline 4 to be in a second communicating state, disconnecting the air supply pipeline 1 from the testing pipeline 3, firstly connecting the air supply pipeline 1 with the water supply pipeline 2, then connecting the water supply pipeline 2 with the testing pipeline 3 to continue to perform an action test on the drain valve 8 to be tested (at the moment, the medium in the testing pipeline is desalted water), observing the outlet of the drain valve 8 to be tested, and if no water flows out from the outlet within a certain time (a plurality of seconds), indicating that the action test is unqualified, and if water flows out from the outlet, disconnecting the water supply pipeline 2, and continuing to repeat the above flow after discharging the water in the drain valve 8 to be tested, wherein if at least 3 complete cycles can be performed, the action performance of the drain valve can be indicated to be qualified. And meanwhile, the cycle number of the test is continuously increased, so that the cycle number of the test is far more than 3 times and is integral multiple of 3, and the service life of the drain valve 8 to be tested can be tested.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A steam trap performance test device is characterized by comprising:
the air supply pipeline is provided with an air storage device, and high-pressure air is stored in the air storage device;
the water supply pipeline is provided with a water storage device, and the water storage device stores desalted water;
the device comprises a test pipeline, a drain valve to be tested and a first pressure gauge are arranged on the test pipeline, and the first pressure gauge is positioned on the front side of the test pipeline in the flow direction;
the communication pipeline is connected among the air supply pipeline, the water supply pipeline and the test pipeline, the communication pipeline has a first communication state and a second communication state, the air supply pipeline is only communicated with the test pipeline in the first communication state so as to supply air to the test pipeline, and the air supply pipeline is sequentially communicated with the water supply pipeline and the test pipeline in the second communication state so as to supply water to the test pipeline; and the number of the first and second groups,
and the switching structure is arranged on the communicating pipeline and used for switching the communicating pipeline between the first communicating state and the second communicating state.
2. The steam trap performance testing apparatus of claim 1, wherein the communication line comprises a short circuit line disposable in parallel with the water supply line;
the switching structure comprises a short-circuit switch valve arranged on the short-circuit pipeline and a water supply switch device arranged on the water supply pipeline.
3. The steam trap performance testing apparatus of claim 2, wherein the air supply line comprises a first air supply branch pipe and a second air supply branch pipe, wherein a first air storage tank and a second air storage tank are respectively disposed on the first air supply branch pipe and the second air supply branch pipe, and the air storage means comprises the first air storage tank and the second air storage tank;
the communication pipeline further comprises an air passing branch, an air passing switch valve is arranged on the air passing branch, one end of the air passing branch is connected to a pipeline for communicating the first air storage tank with the water storage device, and the other end of the air passing branch is connected to an air outlet of the second air storage tank;
one end of the short-circuit pipeline is communicated with one end of the gas passing branch, and the other end of the short-circuit pipeline is connected to a water outlet of the water storage device;
at least one of the first air supply branch pipe and the second air supply branch pipe can be communicated with the water storage device or the test pipeline.
4. The steam trap performance testing apparatus of claim 3, wherein the water supply line comprises a first water supply branch pipe and a second water supply branch pipe, a first water storage tank and a second water storage tank are respectively arranged on the first water supply branch pipe and the second water supply branch pipe, and the water storage apparatus comprises the first water storage tank and the second water storage tank;
one ends of the first water supply branch pipe and the second water supply branch pipe are communicated with the testing pipeline, and the other ends of the first water supply branch pipe and the second water supply branch pipe are respectively connected to two ends of the gas passing branch pipe;
at least one of the first water supply branch pipe and the second water supply branch pipe is communicated with the first air supply branch pipe and the test pipeline and/or the second air supply branch pipe and the test pipeline.
5. The steam trap performance testing apparatus of claim 2, wherein the water supply line comprises a first water supply branch pipe and a second water supply branch pipe, a first water storage tank and a second water storage tank are respectively arranged on the first water supply branch pipe and the second water supply branch pipe, and the water storage apparatus comprises the first water storage tank and the second water storage tank;
one ends of the first water supply branch pipe and the second water supply branch pipe are communicated with an air outlet of the air storage device, and the other ends of the first water supply branch pipe and the second water supply branch pipe are communicated with the test pipeline;
the short-circuit pipelines are connected with the first water supply branch pipe and the second water supply branch pipe in parallel;
at least one of the first water supply branch pipe and the second water supply branch pipe is communicated with the gas storage device and the testing pipeline.
6. The steam trap performance testing device of claim 3, wherein the air supply line is provided with an air compressor, an air outlet of the air compressor is communicated with an air inlet of the first air supply branch pipe, and an air inlet of the second air supply branch pipe is connected to a pipeline through which the air compressor is communicated with the first air supply branch pipe;
a first air supply branch pipe is provided with a first air supply valve group, and the first air supply valve group is positioned between the air compressor and the first air storage tank;
and a second air supply valve group is arranged on the second air supply branch pipe and is positioned between the air compressor and the second air storage tank.
7. The steam trap performance testing apparatus of claim 1, further comprising a recovery device, the recovery device comprising:
a reservoir;
the first drainage pipeline is communicated with the reservoir and the drain valve to be tested; and (c) a second step of,
the first liquid level meter is used for displaying the liquid level of the reservoir.
8. The steam trap performance testing apparatus of claim 7, wherein the recovery device further comprises:
the circulating pipeline is used for communicating the reservoir with the water storage device;
the circulating pump is arranged on the circulating pipeline; and the number of the first and second groups,
and the circulating switch device is arranged on the circulating pipeline and used for opening or closing the circulating pipeline.
9. The steam trap performance testing apparatus of claim 7 wherein said recovery device further comprises a one-way valve in said first drain line for providing one-way flow of water to said reservoir.
10. The steam trap performance testing apparatus of claim 1, further comprising a vent line and a vent switch device disposed on the vent line, wherein the vent line is connected to the test line, and the vent switch device is configured to open or close the vent line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211300041.3A CN115615689A (en) | 2022-10-21 | 2022-10-21 | Steam trap performance test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211300041.3A CN115615689A (en) | 2022-10-21 | 2022-10-21 | Steam trap performance test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117147136A (en) * | 2023-09-01 | 2023-12-01 | 上海艾维科阀门股份有限公司 | Testing device and testing method for air drain valve |
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- 2022-10-21 CN CN202211300041.3A patent/CN115615689A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117147136A (en) * | 2023-09-01 | 2023-12-01 | 上海艾维科阀门股份有限公司 | Testing device and testing method for air drain valve |
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