CN115615689A - Steam trap performance test device - Google Patents

Abstract

The invention discloses a steam trap performance test device, wherein the steam trap performance test device includes a gas supply pipeline, a water supply pipeline, a test pipeline, a communication pipeline and a switching structure, and a gas storage device is arranged on the gas supply pipeline. The air device stores high-pressure air, the water supply pipeline is equipped with a water storage device, the water storage device stores demineralized water, and the test pipeline is equipped with a steam trap to be tested and a first pressure gauge, and the first pressure gauge is located in the flow direction of the test pipeline On the front side, the communication pipeline is connected between the gas supply pipeline, the water supply pipeline and the test pipeline. The communication pipeline has a first communication state and a second communication state. In the first communication state, the gas supply pipeline is only connected to the test tube. In the second connection state, the air supply pipeline is connected to the water supply pipeline and the test pipeline successively to supply water to the test pipeline. A way switches between a first connectivity state and a second connectivity state.

Description

Steam trap performance test device

technical field

The invention relates to the technical field of steam trap detection, in particular to a steam trap performance test device.

Background technique

Steam traps generally refer to those valves that are used to automatically discharge condensed water on steam pipelines or equipment, and at the same time prevent steam from leaking with water. In order to ensure the quality of this type of valve, the state has issued some standards, mainly including GB/T 12251-2005 "Test Method for Steam Traps" and GB/T 22654-2008 "Technical Conditions for Steam Traps". At present, there are many test items for steam traps, mainly including shell strength test, action test, minimum working pressure test, maximum working pressure test, maximum back pressure test, air discharge capacity test, maximum subcooling test, minimum subcooling test There are more than ten items such as test, air leakage test, thermal condensate discharge test, etc., but the test conditions of most of these tests require the use of boilers to heat desalted water at room temperature to high temperature and high pressure. Among them, the cost of steam preparation is high, and the steam preparation The cycle is long, which leads to high cost and long test time of steam trap, and there is a certain danger in the steam preparation process.

Contents of the invention

The main purpose of the present invention is to provide a performance test device for steam traps, aiming at solving the problems of high cost and long test time of existing traps.

In order to achieve the above object, the present invention proposes a steam trap performance test device, comprising:

An air supply pipeline, an air storage device is arranged on the air supply pipeline, and the air storage device stores high-pressure air;

A water supply pipeline, the water supply pipeline is provided with a water storage device, and the water storage device stores demineralized water;

A test pipeline, the test pipeline is provided with a steam trap to be tested and a first pressure gauge, and the first pressure gauge is on the front side of the test pipeline in the flow direction;

A communication pipeline connected between 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, and in the first communication state, The air supply pipeline is only in communication with the test pipeline to supply air to the test pipeline, and in the second communication state, the air supply pipeline is connected with the water supply pipeline and the test pipeline successively , to supply water to the test line; and,

The switching structure is arranged on the communication pipeline, and is used for switching the communication pipeline between the first communication state and the second communication state.

Optionally, the communication pipeline includes a short-circuit pipeline that can be arranged in parallel with the water supply pipeline;

The switching structure includes 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 gas supply pipeline includes a first gas supply branch pipe and a second gas supply branch pipe, and a first gas storage tank and a second gas storage tank are respectively arranged on the first gas supply branch pipe and the second gas supply branch pipe. a gas storage tank, the gas storage device includes the first gas storage tank and the second gas storage tank;

The communication pipeline also includes a gas passing branch, on which a gas passing switch valve is arranged, and one end of the gas passing branch is connected to the first gas storage tank and communicated with the water storage device On the pipeline, the other end of the gas branch is connected to the gas outlet of the second gas storage tank;

One end of the short-circuit pipeline is connected to one end of the gas-passing branch, and the other end of the short-circuit pipeline is connected to the water outlet of the water storage device;

At least one of the first branch air supply pipe and the second air supply branch pipe can communicate 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, and 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, The water storage device includes the first water storage tank and the second water storage tank;

One end of the first water supply branch pipe and the second water supply branch pipe are connected to the test pipeline, and the other ends of the first water supply branch pipe and the second water supply branch pipe are respectively connected to the two ends of the gas passing branch. end;

At least one of the first water supply branch pipe and the second water supply branch pipe communicates 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, and 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, The water storage device includes the first water storage tank and the second water storage tank;

One end of the first water supply branch pipe and the second water supply branch pipe are both connected to the gas outlet of the gas storage device, and the other ends of the first water supply branch pipe and the second water supply branch pipe are connected to the test pipeline;

The short-circuit pipes are arranged in parallel with the first water supply branch pipe and the second water supply branch pipe;

At least one of the first water supply branch pipe and the second water supply branch pipe communicates with the gas storage device and the test pipeline.

Optionally, the air supply pipeline is provided with an air compressor, the air outlet of the air compressor is connected to the air inlet of the first air supply branch pipe, and the air inlet of the second air supply branch pipe is connected to the On the pipeline that the air compressor communicates with the first air supply branch pipe;

The first air supply branch pipe is provided with a first air supply valve group, and the first air supply valve group is located between the air compressor and the first air storage tank;

The second air supply branch pipe is provided with a second air supply valve group, and the second air supply valve group is located between the air compressor and the second air storage tank.

Optionally, the steam trap performance test device also includes a recovery device, and the recovery device includes:

cistern;

a first drainage pipeline, communicating with the water storage tank and the steam trap to be tested; and,

The first liquid level gauge is used to display the liquid level of the storage tank.

Optionally, the recovery device also includes:

a circulation pipeline, communicating with the water storage tank and the water storage device;

a circulation pump located in the circulation line; and,

The circulation switch device is arranged on the circulation pipeline, and is used to open or close the circulation pipeline.

Optionally, the recovery device further includes a one-way valve arranged in the first drainage pipeline to allow water to flow in one direction to the storage tank.

Optionally, the steam trap performance test device also includes a vent pipeline and a vent switch device arranged in the vent pipeline, the vent pipeline communicates with the test pipeline, and the vent switch device It is used to open or close the venting pipeline.

In the technical solution of the present invention, when the steam trap to be tested is tested, the switching structure is adjusted so that the communication pipeline is in the first communication state. At this time, the air supply pipeline and the water supply pipeline Disconnect, the gas supply pipeline is connected to the test pipeline to perform an action test on the steam trap to be tested. When the value on the first pressure gauge reaches the specified value, disconnect the gas supply pipeline, if If the value on the first pressure gauge cannot remain unchanged for a certain period of time (several seconds), it indicates that the action test is unqualified. If the value on the first pressure gauge can remain unchanged for a certain period of time (several seconds) , then continue to adjust the switching structure so that the communication pipeline is in the second communication state, the air supply pipeline is first connected to the water supply pipeline, and then the water supply pipeline is connected to the test pipeline, so that the Continue the action test of the steam trap to be tested, and observe the outlet of the steam trap to be tested. If there is no water flowing out of the outlet within a certain period of time (several seconds), it means that the action test is unqualified; Disconnect the water supply pipeline and continue to repeat the above process. If at least 3 complete cycles can be performed, it means that the performance of the trap is qualified. In this way, through the switching structure and the communication pipeline, the steam traps to be tested are subjected to action tests under different media, so as to ensure that the steam traps to be tested meet the specification requirements, and at the same time, the gas storage device Directly transport high-pressure air to avoid additional boilers to prepare steam, which is beneficial to reduce test cost and test time and reduce the risk of steam preparation, thus solving the problem of high cost and long test time of steam traps. In addition, the number of test cycles is continuously increased so that the number of test cycles is much greater than 3 and is an integer multiple of 3. The steam trap performance test device can also be used to test the life of the steam trap to be tested.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is the structural representation of an embodiment of the steam trap performance test device provided by the present invention;

Fig. 2 is a test flow chart of the steam trap performance test device provided by the present invention.

Explanation of reference numbers:

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that if there are directional indications involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture. If the specific posture changes , then the directional indication changes accordingly.

In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

Steam traps generally refer to those valves that are used to automatically discharge condensed water on steam pipelines or equipment, and at the same time prevent steam from leaking with water. In order to ensure the quality of this type of valve, the state has issued some standards, mainly including GB/T 12251-2005 "Test Method for Steam Traps" and GB/T 22654-2008 "Technical Conditions for Steam Traps". At present, there are many test items for steam traps, mainly including shell strength test, action test, minimum working pressure test, maximum working pressure test, maximum back pressure test, air discharge capacity test, maximum subcooling test, minimum subcooling test There are more than ten items such as test, air leakage test, thermal condensate discharge test, etc., but the test condition of most of these tests is to use a boiler to heat desalted water at room temperature to a high temperature and high pressure state. Among them, the cost of steam preparation is high, and the steam preparation The cycle is long, which leads to high cost and long test time of trap testing, and there is a certain danger in the steam preparation process.

In view of this, the present invention provides a steam trap performance test device, aiming at solving the problems of high cost and long test time of existing traps. Among them, FIG. 1 is a schematic structural diagram of an embodiment of a steam trap performance test device provided by the present invention, and FIG. 2 is a test flow chart of the steam trap performance test device provided by the present invention.

Please refer to Fig. 1, described steam trap performance test device 100 comprises gas supply pipeline 1, water supply pipeline 2, test pipeline 3, communication pipeline 4 and switching structure 5, and described gas supply pipeline 1 is provided with gas storage device 13, the air 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, and the test pipeline 3 is provided with a hydrophobic valve 8 and a first pressure gauge 31, the first pressure gauge 31 is on the front side of the flow direction of the test pipeline 3, the communication pipeline 4 is connected to the air supply pipeline 1, the water supply pipe Between the pipeline 2 and the test pipeline 3, the communication pipeline 4 has a first communication state and a second communication state. In the first communication state, the gas supply pipeline 1 is only connected to the test pipeline 3 in order to supply air to the test pipeline 3. In the second communication state, the air supply pipeline 1 communicates with the water supply pipeline 2 and the test pipeline 3 successively to supply the test tube The channel 3 supplies water, and the switching structure 5 is provided on the communication pipeline 4 to switch the communication pipeline 4 between the first communication state and the second communication state.

In the technical solution of the present invention, when the steam trap to be tested is tested, the switching structure 5 is adjusted so that the communication pipeline 4 is in the first communication state. At this time, the gas supply pipeline 1 and the The water supply pipeline 2 is disconnected, and the air supply pipeline 1 is connected to the test pipeline 3, so as to perform an action test on the steam trap 8 to be tested, and observe the first pressure gauge 31, when the first pressure gauge When the value on 31 reaches the specified value, disconnect the gas supply pipeline 1. If the value on the first pressure gauge 31 cannot remain unchanged within a certain period of time (several seconds), it means that the action test is unqualified, and then continue to adjust the The switching structure 5 makes the communication pipeline 4 in the second communication state, the gas supply pipeline 1 is disconnected from the test pipeline 3, the gas supply pipeline 1 is first connected to the water supply pipeline 2, and then the The water supply pipeline 2 is connected to the test pipeline 3 to continue the action test to the steam trap 8 to be tested, observe the outlet of the steam trap 8 to be tested, and within a certain period of time (several seconds), if there is no If water flows out, it means that the action test is unqualified. If there is water flowing out from the outlet, continue to repeat the above process. If at least 3 complete cycles can be performed, it means that the action performance of the steam trap is qualified. In this way, through the switching structure 5 and the communication pipeline 4, the action tests of the steam trap 8 to be tested under different media are respectively carried out to ensure that the steam trap 8 to be tested meets the requirements of the specification, and at the same time through the The above-mentioned gas storage device 13 directly transports high-pressure air to avoid additional boilers to prepare steam, which is conducive to reducing the test cost and test time and the risk of steam production, thereby solving the problem of high cost and long test time of traps. In addition, by continuously increasing the number of cycles of the experiment, so that the number of cycles of the test is much greater than 3 times and is an integer multiple of 3, the steam trap performance test device 100 can also be used to test the life of the steam trap 8 to be tested .

It should be noted that since the steam trap performance test device 100 provided by the present invention has no heat source, it is not suitable for testing steam traps with temperature requirements, such as thermostatic steam traps or thermodynamic steam traps, and is only suitable for Mechanical steam trap.

Further, the communication pipeline 4 includes a short-circuit pipeline 41 that can be arranged in parallel with the water supply pipeline 2, and the switching structure 5 includes a short-circuit switch valve disposed on the short-circuit pipeline 41 and a short-circuit switch valve disposed on the water supply pipeline 2. The water supply switch device 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 communicate with the test pipeline 3, so that the storage The high-pressure air in the air device 13 flows to the test pipeline 3, so that the communication 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 first switch to communicate with the water supply pipeline 2, and then the water supply pipeline 2 communicates with the test pipeline 3, so that the water in the water storage device 23 flows to the test pipeline 3, so that the The communication pipeline 4 forms a second communication state. Certainly, in other embodiments, the switching structure 5 may also be a three-way valve, the air outlet of the air supply pipeline 1 communicates with the inlet of the three-way valve, and the two outlets of the three-way valve communicate with each other respectively. The short-circuit pipeline 41 is connected to the water supply pipeline 2 .

In order to enable the gas supply pipeline 1 to continuously supply gas, in this embodiment, the gas supply pipeline 1 includes a first gas supply branch pipe 11 and a second gas supply branch pipe 12, between the first gas supply branch pipe 11 and the second gas supply branch pipe 12 The second gas supply branch pipe 12 is respectively provided with a first gas storage tank 131 and a second gas storage tank 132, and the gas storage device 13 includes the first gas storage tank 131 and the second gas storage tank 132 , the communication pipeline 4 also includes a gas branch 42, a gas switch valve 421 is provided on the gas branch 42, and one end of the gas branch 42 is connected to the first gas storage tank 131 communicates with the water storage device 23, the other end of the gas outlet branch 42 is connected to the gas outlet of the second gas storage tank 132, and one end of the short circuit 41 is connected to the gas outlet. One end of the branch 42, the other end of the short circuit 41 is connected to the 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 It can communicate with the water storage device 23 or the test pipeline 3. When the communication pipeline 4 is in the first communication state, one end of the short-circuit pipeline 41 is connected to one end of the gas passing branch 42. , the first air supply branch pipe 11 communicates with the test pipeline 3 through the short-circuit pipeline 41, so that the high-pressure air in the first air storage tank 131 flows to the test pipeline 3, and the first The two air supply branch pipes 12 communicate with the test pipeline 3 sequentially through the air passage branch 42 and the short-circuit pipeline 41, so that the high-pressure air in the second air storage tank 132 flows to the test pipeline 3. One end of the short-circuit pipeline 41 is connected to the other end of the gas-passing branch 42. At this time, the first air-supply branch 11 passes through the gas-passing branch 42 and the short-circuiting pipeline 41 and The test pipeline 3 is communicated so that the high-pressure air in the first air storage tank 131 flows to the test pipeline 3, and the second air supply branch pipe 12 is connected to the test pipe through the short-circuit pipeline 41 Road 3, so that the high-pressure air in the second air storage tank 132 flows to the test pipeline 3, when the communication pipeline 4 is in the second communication state, the first air supply branch pipe 11 and the The water storage device 23 communicates, and at the same time, the second air supply branch pipe 12 can communicate with the water storage device 23 through the air passage branch 42, so that the first air supply branch 42 can communicate with the water storage device 23. The gas branch circuit and the second gas supply branch circuit can supply gas to the test pipeline 3 or the water storage device 23 respectively, so as to supply air to the first gas storage tank 131 or the second gas storage tank 132. When the gas in one of the gas storage tanks is insufficient, switch to another gas storage tank to ensure that the gas supply pipeline 1 can continuously supply gas. It can be understood that the number of branches in the air supply pipeline 1 includes but 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 , the second air supply branch pipe 12 is provided with a second air supply switching valve 121 .

In order to facilitate the control of the pressure of the first gas storage tank 131, a second pressure gauge is connected to the first gas storage tank 131 to detect the pressure on the first gas storage tank 131, in order to ensure that the first gas storage tank 131 The safety of a gas storage tank 131, the safety valve of the first gas storage tank 131 is connected to the first gas storage tank 131.

In order to control the pressure of the second gas storage tank 132, a third pressure gauge is connected to the second gas storage tank 132 to detect the pressure on the second gas storage tank 132. The safety of the second gas storage tank 132, the second gas storage tank 132 is connected with a safety valve of the second gas storage tank 132.

In order to be able to carry out liquid experiments and gas experiments continuously, in this embodiment, the water supply pipeline 2 includes a first water supply branch pipe 21 and a second water supply branch pipe 22, between the first water supply branch pipe 21 and the second water supply 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, the first water supply branch pipe 21 and one end of the second water supply branch pipe 22 are connected to the test pipeline 3, and the other ends of the first water supply branch pipe 21 and the second water supply branch pipe 22 are respectively connected to the two ends of the gas passing branch 42. At least one of the first water supply branch pipe 21 and the second water supply branch pipe 22 communicates with the first air supply branch pipe 11 and the test pipeline 3 and/or the second air supply branch pipe 12 and the The test pipeline 3, when the communication pipeline 4 is in the second communication state, the first gas supply branch pipe 11 can communicate with the first water storage tank 231, so that the first water storage tank 231 Water flows to the test pipeline 3, and the first air supply branch pipe 11 can also communicate with the second water storage tank 232 through the air passage branch 42, so that the water in the second water storage tank 232 flows to The test pipeline 3, at the same time, the second gas supply branch pipe 12 can communicate with the second water storage tank 232, so that the water in the second water storage tank 232 flows to the test pipeline 3, so The second gas supply branch pipe 12 can also communicate with the first water storage tank 231 through the gas passage branch 42, so that the water in the first water storage tank 231 flows to the test pipeline 3, thus, Through the gas passing branch 42, the first gas supply branch pipe 11 can communicate with the first water storage tank 231 and the test pipeline 3 and/or the second water storage tank 232 and the test pipeline. The pipeline 3, or the second gas supply branch pipe 12 can communicate with the first water storage tank 231 and the test pipeline 3 and/or the second water storage tank 232 and the test pipeline 3 , so that when the gas in one of the first gas storage tanks 131 or the second gas storage tank 132 is insufficient, switch to another gas storage tank to ensure that the water storage The device 23 continuously supplies air, and at the same time, when the water in one of the first water storage tanks 231 or the second water storage tank 232 is insufficient, it switches to another water storage tank to ensure the The test pipeline 3 supplies water continuously, so that the steam trap performance test device 100 can continuously carry out liquid experiments or gas experiments.

In order to facilitate the control of the first water supply branch pipe 21, the first water supply branch pipe 21 is provided with a first water supply switch valve 211 and a third water supply switch valve 212, and the first water supply switch valve 211 is located in the air passage branch. 42 and the first water storage tank 231, the third water supply switching valve 212 is located between the first water storage tank 231 and the test pipeline 3, through the first water storage tank 231 The first water supply on-off valve 211 and the second water supply on-off valve 221 are set at both ends of the pipe, which can not only control the opening or closing of the first water supply branch pipe 21, but also isolate the first water storage tank 231 for maintenance. The first water storage tank 231. Further, the first water storage tank 231 is provided with a second liquid level gauge, so as to observe the liquid level of the first water storage tank 231, in order to facilitate adding water to the first water storage tank 231, the second liquid level gauge A water storage tank 231 is connected with a first water inlet pipe, and the first water inlet pipe is provided with a first water inlet switch valve. In order to facilitate the discharge of the air in the first water storage pipe, the first water storage tank 231 is connected with a first exhaust pipe, and the first exhaust pipe is provided with a first exhaust switch valve. In addition, in order to ensure For the safety of the first water storage tank 231 , a safety valve of the first water storage tank 231 is connected to the first water storage tank 231 .

In order to facilitate the control of 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, and the second water supply switch valve 221 is located in the gas passing branch. 42 and the second water storage tank 232, the fourth water supply switching valve 222 is located between the second water storage tank 232 and the test pipeline 3, through the second water storage tank 232 The third water supply on-off valve 212 and the fourth water supply on-off valve 222 are arranged at both ends of the two ends, which can not only control the opening or closing of the second water supply branch pipe 22, but also isolate the second water storage tank 232 for maintenance. The second water storage tank 232 . Further, the second water storage tank 232 is provided with a third liquid level gauge, so as to observe the liquid level of the second water storage tank 232, in order to add water to the second water storage tank 232, the first The second water storage tank 232 is connected with a second water inlet pipe, and the second water inlet pipe is provided with a second water inlet switch valve. In order to facilitate the discharge of the air in the second water storage pipe, the second water storage tank 232 is connected with a second exhaust pipe, and the second exhaust pipe is provided with a second exhaust switch valve. In addition, in order to ensure For the safety of the second water storage tank 232 , the second water storage tank 232 is connected with a safety valve of 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 adding water, the volume of water in the first water storage tank 231 and the second water storage tank 232 generally does not exceed 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 supply water continuously, in this embodiment, the water supply pipeline 2 includes a first water supply branch pipe 21 and a second water supply branch pipe 22, and between the first water supply branch pipe 21 and the second water supply branch pipe 21 The water supply branch pipe 22 is 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, the first One end of the water supply branch pipe 21 and the second water supply branch pipe 22 are connected to the air outlet of the gas storage device 13, and the other ends of the first water supply branch pipe 21 and the second water supply branch pipe 22 are connected to the test pipeline. 3. The short-circuit pipes 41 are arranged in parallel with the first water supply branch pipe 21 and the second water supply branch pipe 22, and the first water supply branch pipe 21 communicates with at least one of the second water supply branch pipe 22. The gas storage device 13 and the test pipeline 3, when the communication pipeline 4 is in the second communication state, the gas supply pipeline 1 can communicate with the first water storage tank 231, so that the first water storage tank 231 The water in the water tank 231 flows to the test pipeline 3, and the air supply pipeline 1 can also communicate with the second water storage tank 232 through the air passing branch 42, so that the second water storage tank 232 The water flows to the test pipeline 3, so that when the water in one of the first water storage tank 231 or the second water storage tank 232 is insufficient, switch to another water storage tank tank, so that the water supply pipeline 2 can continuously supply water to the test pipeline 3 .

In order to supply air to the first air storage tank 131 or the second air storage tank 132 in time, in this embodiment, the air supply pipeline 1 is provided with an air compressor 14, and the outlet of the air compressor 14 The air port is connected to the air inlet of the first air supply branch pipe 11, and the air inlet of the second air supply branch pipe 12 is connected to the pipeline where the air compressor 14 communicates with the first air supply branch pipe 11, so The first air supply branch pipe 11 is provided with a first air supply branch pipe 111, the first air supply branch pipe 111 is located between the air compressor 14 and the first air storage tank 131, and the second air supply branch pipe 111 is located between the air compressor 14 and the first air storage tank 131. The branch pipe 12 is provided with a second air supply valve group 122, the second air supply valve group 122 is located between the air compressor 14 and the second air storage tank 132, so set, by setting the air pressure Machine 14, so that when the gas in the first gas storage tank 131 or the second gas storage tank 132 is insufficient, the gas is replenished in time to ensure that the gas supply pipeline 1 can continuously supply gas, and at the same time, by setting the The first air supply branch pipe 111 and the second air supply valve group 122 are used so that the air compressor 14 supplies air to the first air storage tank 131 or the second air storage tank 132 respectively. Further, in order to ensure the safety of the first gas storage tank 131 and the second gas storage tank 132 during gas replenishment, the pressure of the first gas storage tank 131 and the second gas storage tank 132 generally does not exceed the design pressure 70% of.

It should be noted that the first air supply branch pipe 111 and the second air supply valve group 122 can be a single valve or multiple valves, which is not limited in the present invention. Specifically, in this embodiment, the The first air supply branch pipe 111 and the second air supply valve group 122 include an air supply valve group, and the air supply valve group includes an air supply electric valve and an air supply stop valve, and adopts a double valve setting to improve the air supply. The safety of gas line 1.

In order to facilitate the observation of the drainage situation of the steam trap 8 to be tested, in this embodiment, the steam trap performance test device 100 also includes a recovery device 6, and the recovery device 6 includes a water storage tank 61, a first drain pipe Road 62 and a first liquid level gauge 63, the first drainage pipeline 62 communicates with the reservoir 61 and the steam trap 8 to be tested, and the first liquid level gauge 63 is used to display the water level of the reservoir 61 The liquid level is set in such a way that the water discharged from the steam trap 8 to be tested is transported to the reservoir 61 through the first drainage pipeline 62 to be collected for centralized treatment. Position gauge 63, so that the experimenter can observe the drainage situation of the steam trap 8 to be tested.

In order to improve the utilization rate of water, in this embodiment, the recovery device 6 also includes a circulation pipeline 64, a circulation pump 65 and a circulation switch device 66, and the circulation pipeline 64 communicates with the water storage tank 61 and the The water storage device 23, the circulation pump 65 is arranged on the circulation pipeline 64, and the circulation switch device 66 is arranged on the circulation pipeline 64 to open or close the circulation pipeline 64, thus, through the circulation The pipeline 64 and the circulation pump 65 are used to deliver the water in the reservoir 61 to the water storage device 23, so that the water can be recycled, which helps to improve the utilization rate of water.

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 the second circulation branch pipe are arranged in parallel. Branch pipe, one end of the circulation main pipe communicates with the reservoir 61, the first circulation branch pipe communicates with the other end of the circulation main pipe and the first water storage tank 231, and the second circulation branch pipe communicates with the circulation The other end of the main pipe is connected to the second water storage tank 232 . The cycle switch device 66 includes a first cycle switch valve 661 arranged on the cycle main pipe, a second cycle switch valve 662 arranged on the first cycle branch pipe, and a second cycle switch valve 662 arranged on the second cycle branch pipe. The third cycle switch valve 663 is used to replenish water to the first water storage tank 231 or the second water storage tank 232 respectively.

In order to avoid water accumulation in the water supply pipeline, in this embodiment, the recovery device 6 further includes a second drainage pipeline 68 connected to the test pipeline 3, and The drain cut-off valve of the road 68, so, when the drainage action experiment is over, close the water supply pipeline 2, open the drain shut-off valve on the second drain pipeline 68, and drain the desalted water in the test pipeline 3. to prevent water accumulation in the test tube.

In order to prevent the water in the storage tank 61 from flowing back, in this embodiment, the recovery device 6 further includes a one-way valve 67 arranged in the first drainage pipeline 62 to make the water flow into the storage tank 61. The pool 61 flows in one direction, so as to prevent the water in the pool 61 from flowing back to the steam trap 8 to be tested.

In order to release the pressure in the test pipeline 3 in time, in this embodiment, the steam trap performance test device 100 also includes a vent pipeline 7 and a vent switch device arranged in the vent pipeline 7 71, the vent pipeline 7 is connected to the test pipeline 3, the vent switch device 71 is used to open or close the vent pipeline 7, when the action test (the medium in the test pipeline is air) is completed , open the vent switch device 71, so as to release the pressure in the test pipeline 3, which is beneficial to restore the steam trap performance test device 100 to the initial state in time, and avoid remaining pressure in the test pipeline 3 , contribute to the safety of the steam trap performance test device 100, in addition, during the test, when the pressure in the test pipeline 3 is too high, through the vent pipeline 7, so as to release a part Pressure, so as to avoid the pressure in the test pipeline 3 being too high.

It should be noted that the vent switch device 71 may be a single valve or multiple valves, which is not limited in the present invention. Specifically, in this embodiment, the vent switch device 71 includes a vent electric valve and a vent cut-off valve. The valve adopts a double valve setting to improve the safety of the venting pipeline 7.

The experimental process of the steam trap performance test device will be described below in conjunction with the above-mentioned embodiments. Specifically, please refer to Fig. 2:

Before the steam trap to be tested is tested, the steam trap to be tested 8 needs to be installed on the test device, and the communication pipeline 4 is in the second communication state by adjusting the switching structure 5. Pass a certain amount of desalted water into the steam trap 8 to be tested, then close the water supply pipeline 2, open the drainage cut-off valve on the second drainage pipeline 68, and drain the desalted water in the test pipeline, Then close the drainage cut-off valve on the second drainage pipeline 68, adjust the switching structure 5 so that the communication pipeline 4 is in the first communication state, at this time, the air supply pipeline 1 and the water supply pipeline 2 disconnected, the air supply pipeline 1 is connected to the test pipeline 3, so as to perform an action test on the steam trap 8 to be tested (at this time, the medium in the test pipeline is air), and observe the first pressure gauge 31 , when the value on the first pressure gauge 31 reaches a specified value, disconnect the air supply pipeline 1, and if the value on the first pressure gauge 31 cannot remain unchanged within a certain period of time (several seconds), then the action If the test fails, if the value on the first pressure gauge 31 can remain unchanged for a certain period of time (several seconds), then open the vent switch device 71 until the value on the first pressure gauge 31 drops to 0 , close and discharge the switch device 71 and adjust the switching structure 5 so that the communication pipeline 4 is in the second communication state; continue to adjust the switching structure 5 so that the communication pipeline 4 is in the second communication state, so The gas supply pipeline 1 is disconnected from the test pipeline 3, the gas supply pipeline 1 is first connected to the water supply pipeline 2, and then the water supply pipeline 2 is connected to the test pipeline 3, so as to treat the Test the steam trap 8 to continue the action test (at this time, the medium in the test pipeline is desalinated water), observe the outlet of the steam trap 8 to be tested, and within a certain period of time (several seconds), if there is no water flowing out of the outlet, it means the action test Unqualified, if there is water flowing out of the outlet, then disconnect the water supply pipeline 2, and after the water in the steam trap 8 to be tested is discharged, continue to repeat the above process, if at least 3 complete cycles can be performed, then It can be said that the action performance of the steam trap is qualified. At the same time, the number of cycles of the test is continuously increased so that the number of cycles of the test is much greater than 3 times and is an integer multiple of 3, so that the life of the steam trap 8 to be tested can be tested.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Under the concept of the present invention, the equivalent structure transformation made by using the description of the present invention and the contents of the accompanying drawings, or direct/indirect use All other relevant technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A steam trap performance test device, characterized in that, comprising: An air supply pipeline, an air storage device is arranged on the air supply pipeline, and the air storage device stores high-pressure air; A water supply pipeline, the water supply pipeline is provided with a water storage device, and the water storage device stores demineralized water; A test pipeline, the test pipeline is provided with a steam trap to be tested and a first pressure gauge, and the first pressure gauge is on the front side of the test pipeline in the flow direction; A communication pipeline connected between 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, and in the first communication state, The air supply pipeline is only in communication with the test pipeline to supply air to the test pipeline, and in the second communication state, the air supply pipeline is connected with the water supply pipeline and the test pipeline successively , to supply water to the test line; and, The switching structure is arranged on the communication pipeline, and is used for switching the communication pipeline between the first communication state and the second communication state. 2. steam trap performance test device as claimed in claim 1, is characterized in that, described communicating pipeline comprises the short connection pipeline that can be arranged in parallel with described water supply pipeline; The switching structure includes 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 test device according to claim 2, wherein the gas supply pipeline comprises a first gas supply branch pipe and a second gas supply branch pipe, and between the first gas supply branch pipe and the second gas supply branch pipe A first gas storage tank and a second gas storage tank are respectively provided on the two gas supply branch pipes, and the gas storage device includes the first gas storage tank and the second gas storage tank; The communication pipeline also includes a gas passing branch, on which a gas passing switch valve is arranged, and one end of the gas passing branch is connected to the first gas storage tank and communicated with the water storage device On the pipeline, the other end of the gas branch is connected to the gas outlet of the second gas storage tank; One end of the short-circuit pipeline is connected to one end of the gas-passing branch, and the other end of the short-circuit pipeline is connected to the water outlet of the water storage device; At least one of the first branch air supply pipe and the second air supply branch pipe can communicate with the water storage device or the test pipeline. 4. The steam trap performance test device according to claim 3, wherein the water supply pipeline comprises a first water supply branch pipe and a second water supply branch pipe, and the first water supply branch pipe and the second water supply branch pipe A first water storage tank and a second water storage tank are respectively arranged on the top, and the water storage device includes the first water storage tank and the second water storage tank; One end of the first water supply branch pipe and the second water supply branch pipe are connected to the test pipeline, and the other ends of the first water supply branch pipe and the second water supply branch pipe are respectively connected to the two ends of the gas passing branch. end; At least one of the first water supply branch pipe and the second water supply branch pipe communicates 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 test device according to claim 2, wherein the water supply pipeline comprises a first water supply branch pipe and a second water supply branch pipe, and the first water supply branch pipe and the second water supply branch pipe A first water storage tank and a second water storage tank are respectively arranged on the top, and the water storage device includes the first water storage tank and the second water storage tank; One end of the first water supply branch pipe and the second water supply branch pipe are both connected to the gas outlet of the gas storage device, and the other ends of the first water supply branch pipe and the second water supply branch pipe are connected to the test pipeline; The short-circuit pipes are arranged in parallel with the first water supply branch pipe and the second water supply branch pipe; At least one of the first water supply branch pipe and the second water supply branch pipe communicates with the gas storage device and the test pipeline. 6. The steam trap performance test device as claimed in claim 3, wherein the air supply line is provided with an air compressor, and the air outlet of the air compressor is connected to the intake air of the first air supply branch pipe. port, the air inlet of the second air supply branch pipe is connected to the pipeline communicating with the air compressor and the first air supply branch pipe; The first air supply branch pipe is provided with a first air supply valve group, and the first air supply valve group is located between the air compressor and the first air storage tank; The second air supply branch pipe is provided with a second air supply valve group, and the second air supply valve group is located between the air compressor and the second air storage tank. 7. steam trap performance test device as claimed in claim 1, is characterized in that, described steam trap performance test device also comprises recovery device, and described recovery device comprises: cistern; a first drainage pipeline, communicating with the water storage tank and the steam trap to be tested; and, The first liquid level gauge is used to display the liquid level of the storage tank. 8. steam trap performance test device as claimed in claim 7, is characterized in that, described recovery device also comprises: a circulation pipeline, communicating with the water storage tank and the water storage device; a circulation pump located in the circulation line; and, The circulation switch device is arranged on the circulation pipeline, and is used to open or close the circulation pipeline. 9. The steam trap performance test device according to claim 7, wherein the recovery device further comprises a one-way valve arranged in the first drainage pipeline to allow water to flow to the storage tank. One-way flow. 10. The steam trap performance test device according to claim 1, wherein the steam trap performance test device also includes a vent pipeline and a vent switch device arranged on the vent pipeline, the The venting pipeline communicates with the test pipeline, and the venting switch device is used to open or close the venting pipeline.

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