CN110735926B - Sealing system - Google Patents

Sealing system Download PDF

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Publication number
CN110735926B
CN110735926B CN201910981446.XA CN201910981446A CN110735926B CN 110735926 B CN110735926 B CN 110735926B CN 201910981446 A CN201910981446 A CN 201910981446A CN 110735926 B CN110735926 B CN 110735926B
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Prior art keywords
medium
valve
injection point
flowing
flowing medium
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CN110735926A (en
Inventor
戴必柱
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Wuxi Yiliteya Machinery Manufacturing Co ltd
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Wuxi Yiliteya Machinery Manufacturing Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipeline Systems (AREA)

Abstract

The present invention provides a sealing system comprising: the device comprises a box body, a plurality of groups of medium pump assemblies connected with the box body, a target injection point connected with the plurality of groups of medium pump assemblies, a target receiving point connected with the target injection point, and a second one-way valve connected with the target receiving point; the multiple groups of medium pump assemblies pump the flowing medium in the box body to a target injection point; the second one-way valve is opened based on the pressure generated when the medium pump assembly pumps the flowing medium and receives the flowing medium pumped by the target injection point, so that the flowing medium flowing through the second one-way valve flows back to the box body; and a flow regulating valve is arranged between the target injection point and the target receiving point and used for regulating the flow of the flowing medium at the target injection point, and when the flow of the flowing medium at the target injection point exceeds a first preset flow, the flowing medium at the target injection point is shunted to the target receiving point. The invention is used for realizing the sealing and washing of the machine and effectively improving the sealing effect.

Description

Sealing system
Technical Field
The invention relates to the field of sealing oil stations, in particular to a sealing system.
Background
With the continuous improvement of the petrochemical level, the use of the packaging type dry gas seal is more common. Dry gas seal usually can be used for washing the machine, but, generally utilize the cost of collection dress formula dry gas seal to wash the machine than higher, this has undoubtedly improved the use cost of enterprise, and sealing performance is than relatively poor, influences the washing effect.
In view of the above, there is a need for an improved sealing station for a flushing machine in the prior art to solve the above problems.
Disclosure of Invention
The invention aims to disclose a sealing system to realize sealing and flushing of a machine and effectively improve the sealing effect.
To achieve the above object, the present invention provides a sealing system comprising:
the device comprises a box body, a plurality of groups of medium pump assemblies connected with the box body, a target injection point connected with the plurality of groups of medium pump assemblies, a target receiving point connected with the target injection point, and a second one-way valve connected with the target receiving point;
a plurality of sets of the medium pump assemblies are configured to pump the flowing medium in the tank to a target injection point;
the second check valve is configured to open and receive the flowing medium pumped via the target injection point based on a pressure generated when the flowing medium is pumped by the medium pump assembly, so that the flowing medium flowing through the second check valve flows back into the tank body;
and a flow regulating valve is arranged between the target injection point and the target receiving point and is configured to regulate the flow of the flowing medium at the target injection point, so that the flowing medium at the target injection point is shunted to the target receiving point and flows back to the box body through the target receiving point when the flow of the flowing medium at the target injection point exceeds a first preset flow.
As a further improvement of the invention, the multiple groups of medium pump assemblies are all composed of a medium pump and a first one-way valve; wherein,
the medium pump is configured to pump the flowing medium in the tank to the first check valve;
the first check valve is configured to open and receive a first preset flow rate of the flowing medium pumped by the medium pump based on a pressure generated when the flowing medium is pumped by the medium pump, so that the flowing medium flows to the target injection point.
As a further improvement of the invention, the method also comprises the following steps:
and a self-operated regulating valve is arranged between the second one-way valve and the target receiving point and is configured to regulate the flow pressure borne by the second one-way valve so that the flow pressure borne by the second one-way valve is within a preset pressure range.
As a further improvement of the invention, the method also comprises the following steps:
an accumulator connected to the first check valve, the accumulator being configured to receive a second preset flow rate of the flowing medium pumped by the medium pump based on a pressure generated when the medium pump pumps the flowing medium, so that the flowing medium in the accumulator flows to the target injection point when the medium pump fails to operate.
As a further development of the invention, the second non return valve is configured to receive the flow medium flowing out of the accumulator when the medium pump is inoperative and to cause the received flow medium to flow via the first non return valve to the target injection point.
As a further development of the invention, the accumulator comprises a floating flag for characterizing a pressure state within the accumulator to determine whether the pressure within the accumulator is in equilibrium with the pressure experienced by the first one-way valve.
As a further development of the invention, a first service valve is provided between the first non return valve and the target injection point for servicing the line between the first non return valve and the target injection point.
As a further improvement of the present invention,
the quantity of second check valve is the same with the multiunit medium pump unit's quantity, and is located be equipped with the second service valve between second check valve, the first check valve that corresponds the connection with the second check valve, the second service valve is used for overhauing first check valve with pipeline between the second check valve.
As a further improvement of the invention, the method also comprises the following steps:
the flowing medium flowing to the target injection point forms a flushing path to the target receiving point through the third one-way valve and the first valve, and the flowing medium flowing out of the target node flows back to the box body;
wherein the flushing path is at least one.
As a further improvement of the invention, the method also comprises the following steps:
the flow transmitter is arranged between the target receiving point and the self-operated regulating valve and is used for detecting the pipeline flow between the target receiving point and the self-operated regulating valve;
one end of the flow regulating valve is connected with the target injection point, and the other end of the flow regulating valve is connected with the self-operated regulating valve.
As a further improvement of the invention, the method also comprises the following steps:
a filter connected to the second check valve, the filter configured to filter the flow medium passing through the second check valve to return the filtered flow medium to the tank; and
and the pressure difference meter is connected in parallel with the two ends of the filter and is used for detecting the pressure values of the two ends of the filter so as to determine whether impurities exist in the flowing medium flowing through the filter or not based on the detected pressure values.
Compared with the prior art, the invention has the beneficial effects that:
the sealing system pumps the flowing medium in the box body to a target injection point through the multiple groups of medium pump assemblies, opens and receives the flowing medium pumped through the target injection point through the second one-way valve according to the pressure generated when the medium pump assemblies pump the flowing medium, so that the flowing medium flowing through the second one-way valve flows back into the box body, and adjusts the flow rate of the flowing medium in the pipeline where the target injection point is located through the action of the flow regulating valve, so that the flowing medium in the pipeline where the target injection point is located is divided to the target receiving point when the flow rate of the flowing medium in the pipeline where the target injection point is located exceeds a first preset flow rate, and flows back into the box body through the target receiving point. Therefore, the sealing system of the invention not only can improve the sealing effect to improve the cleaning effect of the machine, but also can prevent the damage of the pipeline and the components in the pipeline caused by the overpressure state caused by the overlarge flow of the target injection node through the action of the flow regulating valve.
Drawings
FIG. 1 is a schematic structural diagram of a sealing system according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a sealing system according to one embodiment of the present invention;
FIG. 3 is a schematic front view of FIG. 2;
fig. 4 is a schematic top view of fig. 2.
FIG. 5 is a schematic right side view of FIG. 2;
fig. 6 is a schematic left side view of fig. 2.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
Please refer to fig. 1 to 6, which illustrate an embodiment of a sealing system according to the present invention.
The sealing system of the present invention comprises: the system comprises a box body 1, a plurality of groups of medium pump assemblies connected with the box body 1, a target injection point 1051 connected with the plurality of groups of medium pump assemblies, a target receiving point 1052 connected with the target injection point 1051, and a second one-way valve 15 connected with the target receiving point 1052; the multiple-group medium pump assembly is configured to pump the flowing medium in the tank 1 to the target injection point 1051; the second check valve 15 is configured to open and receive the flowing medium pumped via the target injection point 1051 based on a pressure generated when the medium pump assembly pumps the flowing medium, so that the flowing medium after passing through the second check valve 15 flows back into the tank 1; wherein a flow regulating valve 27 is disposed between the target injection point 1051 and the target receiving point 1052, and the flow regulating valve 27 is configured to regulate the flow rate of the flowing medium at the target injection point 1051, so as to bypass the flowing medium at the target injection point 1051 to the target receiving point 1052 and return to the tank 1 through the target receiving point 1052 when the flow rate of the flowing medium at the target injection point 1051 exceeds a first preset flow rate.
Wherein, the multiple groups of medium pump assemblies are all composed of a medium pump 3 and a first one-way valve 7. The medium pump 3 is configured to pump the flowing medium in the tank 1 to the first check valve 7; the first check valve 7 is configured to open and receive a first preset flow rate of the flowing medium pumped by the medium pump 3 based on a pressure generated when the medium pump 3 pumps the flowing medium to flow the flowing medium to the target injection point 1051. Wherein, the medium pump 3 can be connected with an explosion-proof motor D so as to drive the medium pump 3 to work under the action of the explosion-proof motor D. Wherein, the input end of the medium pump 3 is connected with a filter (2.1 or 2.2) to filter out impurities in the flowing medium before the medium pump 3 pumps the flowing medium in the box body 1 to the pipeline in the sealing system.
The invention relates to a sealWhen the system starts the medium pump 3 in the medium pump assembly, it will generate pressure in direction a to make the flowing medium flow in direction a, and when flowing to the node k1, the first check valve 7 will be opened by the pressure in direction a and make the flowing medium continue to flow in direction a to the target injection point 1051, and through the target injection point 1051 at N1The flowing medium sprayed in the direction flushes the machine; meanwhile, when the pressure in the a direction generated by the medium pump 3 passes through the node k1, a part of the pressure abuts against the second check valve 15 in the a1 direction to open the second check valve 15 (the flowing medium does not flow to the second check valve 15 in the a1 direction due to the action of the second check valve 15), so that the flowing medium is pumped to the target injection point 1051 through the first check valve 7, the machine is flushed by the flowing medium injected in the N1 direction through the target injection point 1051, and the flowing medium injected from the target injection point 1051 and flowing to the target receiving point 1052 in the N2 direction and the second check valve 15 is recovered to flow into the tank 1 in the a direction. Wherein the flow exits in the direction of N1 and flows in the direction of N2, i.e., flows in the direction of a from the target transmission point 1051 to the target reception point 1052.
It should be noted that, during the process of flushing the machine, the sealing system can adjust the flow rate of the flowing medium in the pipe where the target injection point 1051 is located by adjusting the flow rate adjusting valve 27, so that the flowing medium in the pipe where the target injection point 1051 is located is diverted to the target receiving point 1052 and flows back into the tank 1 through the target receiving point 1052 when the flow rate of the flowing medium in the pipe where the target injection point 1051 is located exceeds a first preset flow rate.
Thus, not only can the sealing effect be improved by the sealing system of the invention to improve the cleaning effect of the machine, but also the damage caused by the overpressure state of the pipeline and the components in the pipeline caused by the overlarge flow of the target injection node 1051 can be prevented by the action of the flow regulating valve 27.
In the above embodiment, the sealing system further comprises: a self-operated regulating valve 13 is disposed between the second check valve 15 and the target receiving point 1052, and the self-operated regulating valve 13 is configured to regulate the flow pressure received by the second check valve 15 so that the flow pressure received by the second check valve 15 is within a preset pressure range.
Like this, the regulation to the flow pressure that second check valve 15 received is realized through the effect of formula of relying on oneself governing valve 13 to the flow pressure that can control second check valve 15 and receive is in predetermineeing pressure range, prevents that second check valve 15 from leading to the fact the damage because the atress is too big.
In addition, the material of the self-operated regulator 13 is stainless steel, so as to effectively prevent the flowing medium from corroding the self-operated regulator.
In some of the above embodiments, the sealing system further comprises an accumulator 29 connected to the first check valve 7, the accumulator 29 being configured to receive a second preset flow rate of the flowing medium pumped by the medium pump 3 based on the pressure generated when the medium pump 3 pumps the flowing medium, so that the flowing medium in the accumulator 29 flows to the target injection point 1051 when the medium pump 3 is not working. Second check valve 15 is configured to receive the flow medium flowing out of accumulator 29 (and via target injection point 1051, target receiving point 1052) when medium pump 3 is not operating and to cause the received flow medium to flow to target injection point 1051 via first check valve 7. Accumulator 29 includes a floating flag 29.1, floating flag 29.1 being used to characterize the pressure condition within accumulator 29 to determine whether the pressure within accumulator 29 is balanced with the pressure experienced by first check valve 7.
Wherein, the sum of the first preset flow and the second preset flow is the total flow of the flow medium pumped from the box body 1 by the medium pump 3.
It will be appreciated that the flowing medium flows in the A direction to node k2While most of the flow medium is still flowing in the direction a to the target injection point 1051, some of the flow medium flows in the direction a2 into the accumulator 29 until the accumulator 29 reaches a dwell state (the pressure state in the accumulator 29 is determined based on the floating flag 29.1 in the accumulator 29). When the medium pump 3 is damaged and cannot pump the flowing medium, the flowing medium stored in the accumulator 29 flows in the direction of a2 'to the pipe where the first check valve 7 is located, and due to the effect that the first check valve 7 can only circulate the flowing medium in the direction of a, the flowing medium flowing out of the accumulator 29 flows in the direction of a 2' to the target injection point 1051,and the flowing medium flowing out via the target receiving point 1052 flows in the direction a 2' through the second check valve 15 to the first check valve 7, whereby, when the medium pump 3 is in a damaged state, the pipelines between the first check valve 7, the target injection point 1051, the target receiving point 1052 and the second check valve 15 form a circulation loop, which does not damage other components in the sealing system, thereby serving the purpose of protecting the sealing system.
The first check valve 7 only has the function of circulating the flowing medium in the direction a, that is, the flowing medium in the pipeline cannot flow back to the medium pump 3, so that the medium pump 3 is protected, and the flowing medium is prevented from flowing back to the medium pump 3 to damage the medium pump 3.
In the above-described further embodiment, a first service valve (11.1 or 11.2) is provided between the first non return valve 7 and the target injection point 1051 for servicing the line between the first non return valve 7 and the target injection point 1051. The number of the second one-way valves 15 is the same as that of the multiple groups of medium pump assemblies, second maintenance valves (8.1 or 8.2) are arranged between the second one-way valves 15 and the first one-way valves 7 correspondingly connected with the second one-way valves 15, and the second maintenance valves (8.1 or 8.2) are used for maintaining pipelines between the first one-way valves 7 and the second one-way valves 15.
Further, the sealing system further comprises: and the flow transmitter 10 is arranged between the target receiving point 1052 and the self-operated regulating valve 13, and is used for detecting the pipeline flow between the target receiving point 1052 and the self-operated regulating valve 13 so as to prevent the second check valve 15 from being damaged due to overlarge pressure caused by overlarge pipeline flow between the target receiving point 1052 and the self-operated regulating valve 13, so that the sealing system is damaged or is in a dangerous state. Wherein one end of the flow control valve 27 is connected to the target injection point 1051, and the other end of the flow control valve 27 may be directly connected to the target receiving point 1052. To further improve the flow detection of flow transmitter 10 at target receiving point 1052, the other end of flow control valve 27 may be connected to one end of self-operated control valve 13 connected to flow transmitter 10, so that flow transmitter 10 is directly disposed at target receiving point 1052, i.e. one end of flow control valve 27 is connected to target injection point 1051, and the other end of flow control valve 27 is connected to self-operated control valve 13. The sealing system of the present invention further comprises: and the heat exchanger 17 connected with the second check valve 15 is used for exchanging heat for the flowing medium flowing out through the second check valve 15, so that the flowing medium after heat exchange flows into the box body 1, and thus, the sealing system can be prevented from being damaged due to overhigh temperature of the flowing medium in the pipeline. Wherein, the water inlet end and the water outlet end of the heat exchanger 17 are both provided with a third maintenance valve (the water inlet end is connected with the third maintenance valve 11.7 and/or the third maintenance valve 11.8, and the water outlet end is connected with the third maintenance valve 11.5 and/or the third maintenance valve 11.6) so as to maintain the pipelines of the water inlet end and the water outlet end of the heat exchanger 17 through the third maintenance valve.
Because the flowing medium can produce impurity in the flow process of pipeline, and impurity not only can influence the washing effect to the machine, still can cause certain harm to sealing system to a certain extent, from this, need clear away the impurity in the flowing medium. I.e. the sealing system further comprises a filter 18 connected to the second one-way valve 15, the filter 18 being configured to filter the flow medium passing through the second one-way valve 15 such that the filtered flow medium flows back into the tank 1. Of course, as shown in fig. 1, a filter 18 may be connected to the heat exchanger 17 to return the heat-exchanged flowing medium to the inside of the case 1. A pressure difference gauge 19 is connected in parallel across the filter 18 for detecting a pressure value across the filter 18 to determine whether or not impurities are present in the flow medium flowing through the filter 18 based on the detected voltage value. In this way, the impurities contained in the flowing medium in the pipeline are effectively removed through the action of the filter 18, and whether the impurities remain in the flowing medium (or whether the contained impurities exceed a certain range) is detected through the action of the pressure difference meter 19 so as to judge whether the filter 18 is damaged according to the detected condition, so that the filter can be replaced in time to keep the cleanliness of the flowing medium in the pipeline.
Wherein, both ends of filter 18 all are provided with the third service valve (third service valve 11.9 and/or third service valve 11.10 are connected to one end of filter 18, and the third service valve 11.11 and/or third service valve 11.12 are connected to the other end of filter 18) to overhaul the pipeline at filter 18 both ends through the third service valve.
It should be noted that the positions of the filter 18, the flow transmitter 10, and the heat exchanger 17 may be mutually interactive, or may be installed at other positions in the pipeline, and of course, the filter 18, the flow transmitter 10, or the heat exchanger 17 may also be installed at different positions in the pipeline, and may be specifically set according to actual working condition requirements, as long as the filtering of the flowing medium in the pipeline, the monitoring of the flowing medium flow in the pipeline, and the cooling of the flowing medium in the pipeline can be respectively realized, and the normal operation of the structures of other components in the pipeline is not affected, which is not limited to the scope defined by the embodiment of the present invention.
The sealing system further comprises a gate valve 33.1 or 33.2 connected to the target injection point 1051 to facilitate maintenance or inspection of the tubing between the first non return valve 7 and the target injection point 1051 through the gate valve 33.1 or 33.2. The input of energy storage 29 is provided with gate valve 11.3, is equipped with gate valve 11.4 between the input of energy storage 29 and the ground terminal to be convenient for maintain or inspect the pipeline of the input of energy storage 29 through gate valve 11.3, be convenient for maintain or inspect the pipeline between the input of energy storage 29 and the ground terminal through gate valve 11.4. Similarly, a gate valve 33.3 or 33.4 is also provided between the target receiving point 1052 and the flow transmitter 10 to facilitate maintenance or inspection of the conduit between the target receiving point 1052 and the flow transmitter 10 through the gate valve 33.3 or 33.4.
One end of the self-operated regulating valve 13 connected with the flow transmitter 10 is provided with a gate valve 31.11, a needle valve 6.10 connected with the gate valve 31.11 and a pressure gauge 9.10 connected with the needle valve 6.10. The end of the gate valve 11.1 connected to the target injection point 1051 is provided with a gate valve 31.1, a needle valve 6.1 connected to the gate valve 31.1, and a pressure gauge 9.1 connected to the needle valve 6.1. In addition, the end of the gate valve 11.1 connected to the target injection point 1051 may also be provided with a gate valve 31.2, a valve group 26 connected to the gate valve 31.2, and a pressure transmitter 5.1 connected to the valve group 26.
The box 1 includes an air filter 21 therein for filtering out impurities in the flowing medium in the box 1 to further ensure the cleanliness of the flowing medium. The box body 1 is also provided with a glass liquid level meter 20 for detecting the interface position of the flowing medium in the box body, a bimetallic thermometer 14.1 for detecting the temperature of the flowing medium in the box body 1 and a temperature transmitter 25 capable of displaying the detected temperature to a user.
The outside of the box 1 is provided with a junction box 32 for connecting the wiring of the various components in the sealing system. The outer side of the box body 1 is also provided with a constant temperature electric heater 24 for heating the flowing medium in the box body 1. The double flange department in the box 1 outside is equipped with liquid level transmitter 22 for the liquid level signal in the detection box 1 to liquid level signal conversion who detects is the signal of telecommunication, so that with signal of telecommunication transfer to PC etc. the realization is to the control of the liquid level signal who detects. Wherein, both ends of the liquid level transmitter 22 are provided with gate valves 30. At the input of the first non return valve 7, i.e. at the output of the medium pump 3, a pressure relief valve (pressure relief valve 8.3 or 8.4) is provided for discharging the flowing medium in the line of the target injection point 1051 into the tank 1. A safety valve 12 may be disposed at an outlet end of the first check valve 7, so that when the pressure of the sealing system reaches a set pressure value (for example, 5MPa) of the safety valve 12, the safety valve 12 is opened, and the flowing medium flows back into the tank 1, thereby preventing the sealing system from being over-pressurized and achieving the purpose of protecting the sealing system. A safety valve 12 can also be provided at the outlet of the media pump 3.
In any of the above embodiments, the inlet end of the first check valve 7 is connected to the media pump 3, and the outlet end of the first check valve 7 is connected to the gate valve 11 (if the gate valve 11 is not provided, the outlet end of the first check valve 7 may be connected to the direct target injection point 1051). The inlet end of the second one-way valve 15 is connected with the medium pump 3, and the outlet end of the second one-way valve 15 is connected with the self-operated regulating valve 13.
In addition, the target injection point of any one of the above embodiments may be one, or may be multiple, and when multiple target injection points are provided, the machine may be flushed at the same time through the multiple target injection points, so as to improve the flushing efficiency. The number of target injection points may be 3, 4, 5, 6, 7, 8, 9, 10, etc., and may be set according to specific actual requirements, and is not limited to the number defined in the embodiment of the present invention.
Specifically, the sealing system further comprises: a third check valve 16 connected to the destination spray point 1051, and a first valve 28 connected to the destination receive point 1052, the flowing medium flowing to the destination spray point 1051 forms a flushing path to the destination receive point 1052 via the third check valve 16 and the first valve 28, and the flowing medium flowing from the destination receive node 1052 flows back into the tank 1. Wherein, the flushing path is at least one. In this way, the flowing medium passing through the target spraying point 1051 is subjected to sealing flushing through the flushing path formed by the third check valve 16 and the first valve 28 to the target receiving point 1052, so that the sealing degree can be improved to improve the flushing effect. As shown in fig. 1, eight flushing paths are formed by the target injection point 1051, the third check valve 16, the first valve 28, and the target receiving point 1052, so that 8 machines can be flushed at the same time. Of course, 9, 10, 15, 20 flushing paths may also be provided to achieve the purpose of flushing machines of different numbers simultaneously, and may be specifically set according to actual conditions, which is not limited to the protection scope defined by the embodiment of the present invention.
It should be noted that a gate valve 31, a needle valve 6 connected to the gate valve 31, and a pressure gauge 9 connected to the needle valve 6 may also be provided in the flushing path, wherein the gate valve 31 is connected to the third check valve 16, and a temperature gauge 14 may also be included in the flushing path to detect the temperature of the flowing medium in the flushing path.
The flowing medium in any of the above embodiments may be a liquid such as water or oil, or may be a dry gas.
In addition, the pipes, the gate valves, the needle valves, the check valves and the safety valves in the sealing system of any of the above embodiments can be made of stainless steel to prevent the flowing medium from corroding the pipes and various parts in the pipes.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (9)

1. A sealing system, comprising:
the device comprises a box body, a plurality of groups of medium pump assemblies connected with the box body, a target injection point connected with the plurality of groups of medium pump assemblies, a target receiving point connected with the target injection point, and a second one-way valve connected with the target receiving point;
the multiple groups of medium pump assemblies are configured to pump flowing medium in the tank body to a target injection point, wherein each group of medium pump assemblies consists of a medium pump and a first one-way valve;
the second check valve is configured to open and receive the flowing medium pumped via the target injection point based on a pressure generated when the flowing medium is pumped by the medium pump assembly, so that the flowing medium flowing through the second check valve flows back into the tank body;
a flow regulating valve is arranged between the target injection point and the target receiving point, and is configured to regulate the flow rate of the flowing medium at the target injection point, so that the flowing medium at the target injection point is shunted to the target receiving point and flows back to the box body through the target receiving point when the flow rate of the flowing medium at the target injection point exceeds a first preset flow rate;
the sealing system further comprises: an accumulator connected to the first check valve, the accumulator being configured to receive a second preset flow rate of the flowing medium pumped by the medium pump based on a pressure generated when the medium pump pumps the flowing medium, so that the flowing medium in the accumulator flows to the target injection point when the medium pump fails to operate.
2. The sealing system of claim 1, wherein:
the medium pump is configured to pump the flowing medium in the tank to the first check valve;
the first check valve is configured to open and receive a first preset flow rate of the flowing medium pumped by the medium pump based on a pressure generated when the flowing medium is pumped by the medium pump, so that the flowing medium flows to the target injection point.
3. The sealing system of claim 1, further comprising:
and a self-operated regulating valve is arranged between the second one-way valve and the target receiving point and is configured to regulate the flow pressure borne by the second one-way valve so that the flow pressure borne by the second one-way valve is within a preset pressure range.
4. The sealing system of claim 1, wherein:
the second check valve is configured to receive the flowing medium flowing out of the accumulator when the medium pump is inoperable and to flow the received flowing medium to the target injection point via the first check valve.
5. The sealing system of claim 1, wherein the accumulator includes a float flag for characterizing a pressure condition within the accumulator to determine whether the pressure within the accumulator is balanced with a pressure experienced by the first one-way valve.
6. The sealing system of claim 2, wherein:
and a first maintenance valve is arranged between the first check valve and the target injection point and used for maintaining a pipeline between the first check valve and the target injection point.
7. The sealing system of claim 2, wherein:
the quantity of second check valve is the same with the multiunit medium pump unit's quantity, and is located be equipped with the second service valve between second check valve, the first check valve that corresponds the connection with the second check valve, the second service valve is used for overhauing first check valve with pipeline between the second check valve.
8. The sealing system of claim 1, further comprising:
the flowing medium flowing to the target injection point forms a flushing path to the target receiving point through the third one-way valve and the first valve, and the flowing medium flowing out of the target node flows back to the box body;
wherein the flushing path is at least one.
9. The sealing system of claim 3, further comprising:
the flow transmitter is arranged between the target receiving point and the self-operated regulating valve and is used for detecting the pipeline flow between the target receiving point and the self-operated regulating valve;
one end of the flow regulating valve is connected with the target injection point, and the other end of the flow regulating valve is connected with the self-operated regulating valve.
CN201910981446.XA 2019-10-16 2019-10-16 Sealing system Active CN110735926B (en)

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CN102288252B (en) * 2011-05-12 2012-11-14 温州大学 System for testing micro leakage of sealed component
CN202301289U (en) * 2011-09-02 2012-07-04 上海宝冶集团有限公司 High-low pressure combined online circulating washing and pressure testing device for hydraulic system
CN202673797U (en) * 2012-06-11 2013-01-16 九江大安自控工程有限公司 Seal flush monitoring device for high-temperature pump
CN202921615U (en) * 2012-11-23 2013-05-08 武汉华液传动制造有限公司 High-pressure pulse turbulent pipeline flushing system

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