CN220569093U - Automatic pressure maintaining system for bentonite tank - Google Patents
Automatic pressure maintaining system for bentonite tank Download PDFInfo
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- CN220569093U CN220569093U CN202322350343.8U CN202322350343U CN220569093U CN 220569093 U CN220569093 U CN 220569093U CN 202322350343 U CN202322350343 U CN 202322350343U CN 220569093 U CN220569093 U CN 220569093U
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- bentonite tank
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- 229910000278 bentonite Inorganic materials 0.000 title claims abstract description 174
- 239000000440 bentonite Substances 0.000 title claims abstract description 174
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 239000003570 air Substances 0.000 description 144
- 230000001105 regulatory effect Effects 0.000 description 20
- 239000002689 soil Substances 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000013589 supplement Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Abstract
The application discloses automatic pressure maintaining system of bentonite tank relates to shield equipment technical field, and the automatic pressure maintaining system of bentonite tank includes bentonite tank, pressure transmitter, air inlet regulator, exhaust regulator, controlling means and air treatment subassembly, and the bentonite tank is used for storing bentonite; the pressure transmitting device is connected with the bentonite tank and is used for detecting the pressure in the bentonite tank and determining the current pressure value; the air inlet adjusting device is connected with the bentonite tank; the exhaust adjusting device is connected with the bentonite tank; the control device is respectively connected with the pressure transmitting device, the air inlet adjusting device and the air outlet adjusting device; the air treatment assembly is respectively connected with the control device, the pressure transmitting device, the air inlet adjusting device and the air outlet adjusting device. The automatic control can be realized to the pressure in the bentonite jar, reduces the cost of labor, has also improved the control accuracy of bentonite jar internal pressure simultaneously.
Description
Technical Field
The application relates to the technical field of shield equipment, in particular to an automatic pressure maintaining system of a bentonite tank.
Background
In the related art, an operator maintains the pressure of the bentonite tank through a manually operated valve of the bentonite tank pressure maintaining system, so that the pressure in the bentonite tank reaches the condition required by site construction. When the pressure in the bentonite tank is lower than a target pressure value, supplementing air into the bentonite tank by manually operating an air inlet valve, and simultaneously observing a pressure gauge on the bentonite tank until the target pressure is reached, and closing the air inlet valve; when the pressure in the bentonite tank is higher than the target pressure value, the air in the bentonite tank is discharged outwards through manual operation of the air discharge valve, and meanwhile, the pressure gauge on the bentonite tank is observed until the target pressure is reached, and then the air discharge valve is closed.
However, the pressure maintaining system for the bentonite tank needs to frequently operate the valve and special personnel to stay beside the system, and meanwhile, the target pressure achieved by manually adjusting the pressure in the bentonite tank through the manually operated valve has the problems of large deviation from the actual target pressure and low control precision.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides an automatic pressure maintaining system of bentonite jar, can realize automatic control to the pressure in the bentonite jar, reduce the cost of labor, also improved the control accuracy of bentonite jar internal pressure simultaneously.
The application provides an automatic pressurize system of bentonite jar, include:
a bentonite tank for storing bentonite;
the pressure transmitting device is connected with the bentonite tank and is used for detecting the pressure in the bentonite tank and determining the current pressure value;
the air inlet adjusting device is connected with the bentonite tank;
the exhaust adjusting device is connected with the bentonite tank;
the control device is respectively connected with the pressure transmitting device, the air inlet adjusting device and the air outlet adjusting device, and is used for receiving a current pressure value from the pressure transmitting device, and when the current pressure value is lower than a pressure preset value and the difference value between the current pressure value and the pressure preset value is larger than a first preset deviation value, the control device is also used for carrying out proportional integral operation on the current pressure value to generate a first control signal, and controlling the air inlet adjusting device to be opened according to the first control signal so as to supplement air into the bentonite tank; when the current pressure value is higher than the pressure preset value and the difference value between the current pressure value and the pressure preset value is larger than a second preset deviation value, the control device is further used for performing proportional integral operation on the current pressure value to generate a second control signal, and controlling the exhaust adjusting device to be opened according to the second control signal so as to exhaust the bentonite tank;
the air treatment assembly is respectively connected with the control device, the pressure transmitting device, the air inlet adjusting device and the exhaust adjusting device, and is used for respectively supplying air to the control device, the pressure transmitting device, the air inlet adjusting device and the exhaust adjusting device.
According to the bentonite tank automatic pressure maintaining system, at least the following beneficial effects are achieved: the air treatment assembly is used for respectively supplying air to the control device, the pressure transmitting device, the air inlet regulating device and the air outlet regulating device so as to respectively drive the control device, the pressure transmitting device, the air inlet regulating device and the air outlet regulating device to enter a working state through air pressure; the control device is used for receiving the current pressure value from the pressure transmitting device, when the current pressure value is lower than a pressure preset value and the difference between the current pressure value and the pressure preset value is larger than a first preset deviation value, the control device is also used for carrying out proportional integral operation on the current pressure value to generate a first control signal, controlling the air inlet regulating device to be opened according to the first control signal so as to supplement air into the bentonite tank until the pressure in the bentonite tank is increased to be smaller than or equal to the first preset deviation value, and controlling the air inlet regulating device to be closed until the difference between the pressure in the bentonite tank and the pressure preset value is smaller than or equal to the first preset deviation value, so that the pressure in the bentonite tank is kept stable; when the current pressure value is higher than the pressure preset value and the difference between the current pressure value and the pressure preset value is larger than the second preset deviation value, the control device is further used for performing proportional integral operation on the current pressure value to generate a second control signal, controlling the exhaust adjusting device to be opened according to the second control signal so as to exhaust the bentonite tank until the pressure in the bentonite tank is reduced to be smaller than or equal to the second preset deviation value, and controlling the exhaust adjusting device to be closed by the control device so as to keep the pressure in the bentonite tank stable. Through this kind of setting, this application can realize automatic control to the pressure in the bentonite jar, reduces the cost of labor, has also improved the control accuracy of bentonite jar internal pressure simultaneously.
According to some embodiments of the present application, the automatic pressure maintaining system for a bentonite tank further comprises a bentonite input pipeline and a bentonite output pipeline, wherein the bentonite input pipeline is connected with the input pipeline of the bentonite tank, the bentonite output pipeline is connected with the output pipeline of the bentonite tank, and the bentonite input pipeline and the bentonite output pipeline are respectively arranged on two sides of the bentonite tank.
According to some embodiments of the present application, the automatic pressure maintaining system for bentonite tank further comprises an air input pipeline selectively communicated with the air inlet pipeline of the bentonite tank through the air inlet adjusting device, the air input pipeline further connected with the air treatment assembly, and the air input pipeline is used for conveying air to the bentonite tank and the air treatment assembly respectively.
According to some embodiments of the present application, the air treatment assembly includes a filter, a first pressure reducing device, and an oil separator, one end of the filter is connected to the air input line, the other end of the filter is connected with the first pressure reducing device, one end of the first pressure reducing device, which is away from the filter, is connected with the oil separator, and one end of the oil separator, which is away from the first pressure reducing device, is connected with the intake regulator and the exhaust regulator, respectively.
According to some embodiments of the application, the automatic pressure maintaining system of the bentonite tank further comprises a second pressure reducing device, one end of the second pressure reducing device is connected with the oil separator, and the other end of the pressure reducing device is respectively connected with the pressure transmitting device and the control device.
According to some embodiments of the present application, the air intake regulating device includes a first air valve positioner and an air intake regulating valve, the first air valve positioner is respectively connected with the air intake regulating valve, the control device and the air processing assembly, and the air intake regulating valve is disposed on the air input pipeline.
According to some embodiments of the present application, the automatic pressure maintaining system of bentonite tank further comprises an air output pipeline, the air output pipeline is connected to the air output pipeline of the bentonite tank, the exhaust adjusting device comprises a second pneumatic valve positioner and an exhaust adjusting valve, the second pneumatic valve positioner is respectively connected with the exhaust adjusting valve, the control device and the air processing assembly, and the exhaust adjusting valve is arranged on the air output pipeline.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
Additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an automatic pressure maintaining system for a bentonite tank according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a bentonite tank pressure maintaining system provided in the prior art;
fig. 3 is a schematic front view of an assembled bentonite tank automatic pressure maintaining system according to an embodiment of the present application;
fig. 4 is a schematic diagram of a back surface structure of an assembled automatic pressure maintaining system for a bentonite tank according to an embodiment of the present application.
Reference numerals:
a bentonite tank 110, a bentonite input line 111, and a bentonite output line 112;
an air treatment assembly 120, a filter 121, a first pressure reducing device 122, an oil separator 123, a second pressure reducing device 124, an air input line 125;
pressure transmitter 130 and controller 140;
an intake air adjusting device 150, a first air valve positioner 151, an intake air adjusting valve 152;
an exhaust gas adjusting device 160, a second pneumatic valve positioner 161, and an exhaust gas adjusting valve 162.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that references to orientation descriptions, such as directions of up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.
The shield is a main method in subway tunnel construction, and under the condition of complex geology, whether the shield can rapidly, smoothly and safely tunnel depends on the use of additives to a great extent. The common additives include a foaming agent, bentonite and a polymer, and the foaming agent and the bentonite are the most main additives for improving the dregs in the current shield tunneling construction. Bentonite is not easy to solidify, has extremely low strength after solidification, is easy to absorb water and expand, has lubricity, and can effectively reduce the permeability of dregs. When the shield tunneling machine is overhauled in the stratum which is easy to be unstable for a long time, bentonite is injected into the soil bin, so that the pressure of the soil bin can be kept, and water and soil in the stratum are prevented from entering the soil bin to cause ground subsidence; in addition, the workability of the dregs can be changed, the plasticity of sandy soil is improved, the soil is convenient to remove, and the gushing is reduced.
Referring to fig. 2, in the related art, an operator maintains pressure of a bentonite tank 210 through a manually operated valve of a bentonite tank pressure maintaining system for a shield machine so that the pressure in the bentonite tank 210 reaches the condition required for site construction. When the pressure in the bentonite storage tank 210 is lower than the target pressure value, supplementing air into the bentonite storage tank 210 by manually operating the manual air inlet valve 220, and simultaneously observing the pressure gauge 230 on the bentonite storage tank 210 until the target pressure is reached, and closing the manual air inlet valve 220; when the pressure in the bentonite tank 210 is higher than the target pressure value, the air in the bentonite tank 210 is discharged outwards by manually operating the manual exhaust valve 240, and the pressure gauge 230 on the bentonite tank 210 is observed at the same time, until the target pressure is reached, and then the manual exhaust valve 240 is closed.
However, the bentonite tank pressure maintaining system needs to frequently operate the valve and needs a special person to stay beside the system, and meanwhile, the target pressure achieved by manually adjusting the pressure in the bentonite tank 210 through the manually operated valve has the problems of large deviation from the actual target pressure and low control precision.
Aiming at solving the problems, the application provides an automatic pressure maintaining system for a bentonite tank, and the embodiment of the application is further described below with reference to the accompanying drawings.
Referring to fig. 1, the present application provides an automatic pressure maintaining system for a bentonite tank, which includes a bentonite tank 110, a pressure transmitting device 130, an air intake adjusting device 150, an air exhaust adjusting device 160, a control device 140 and an air processing assembly 120, wherein the bentonite tank 110 is used for storing bentonite; the pressure transmitting device 130 is connected with the bentonite tank 110, and the pressure transmitting device 130 is used for detecting the pressure in the bentonite tank 110 and determining the current pressure value; the air inlet adjusting device 150 is connected with the bentonite tank 110; the exhaust gas adjusting device 160 is connected with the bentonite tank 110; the control device 140 is respectively connected to the pressure transmitting device 130, the air inlet adjusting device 150 and the air outlet adjusting device 160, the control device 140 is configured to receive a current pressure value from the pressure transmitting device 130, and when the current pressure value is lower than a pressure preset value and a difference between the current pressure value and the pressure preset value is greater than a first preset deviation value, the control device 140 is further configured to perform a proportional integral operation on the current pressure value to generate a first control signal, and control the air inlet adjusting device 150 to be opened according to the first control signal so as to supplement air into the bentonite tank 110; when the current pressure value is higher than the pressure preset value and the difference between the current pressure value and the pressure preset value is greater than the second preset deviation value, the control device 140 is further configured to perform a proportional-integral operation on the current pressure value to generate a second control signal, and control the exhaust adjusting device 160 to be opened according to the second control signal, so as to exhaust the bentonite tank 110; the air handling unit 120 is respectively connected to the control device 140, the pressure transmitter 130, the air intake regulator 150 and the air exhaust regulator 160, and the air handling unit 120 is used for supplying air to the control device 140, the pressure transmitter 130, the air intake regulator 150 and the air exhaust regulator 160.
In the shield construction, bentonite is pumped into the bentonite output pipeline 112 from the bentonite tank 110 through the bentonite pump in order to enable the excavated dregs to have certain fluidity and water stopping property, so that the bentonite is injected into the soil bin, groundwater on the excavated surface is reduced from rushing into the pressure bin, and the occurrence of gushing is reduced. When the pressure balance of the bentonite supply part has the problem of delay in pressure rising or pressure reducing, the occurrence of the gushing is caused to a certain extent, and in order to further reduce the occurrence of the gushing, the pressure balance of the bentonite supply part and the pressure balance of the soil bin are required to be kept all the time. Namely, the pressure in the bentonite tank 110 of the shield machine is used as a power source for conveying bentonite into the soil pressure bin, and the pressure needs to be kept stable and cannot be changed along with the change of the liquid level of the bentonite in the bentonite tank 110.
It should be noted that, the pressure transmitting device 130 detects the pressure in the bentonite tank 110 to obtain the current pressure value in the bentonite tank 110, and transmits the current pressure value to the control device 140, and the control device 140 in this embodiment is an arithmetic controller.
In the present application, the air processing component 120 is configured to supply air to the control device 140, the pressure transmitting device 130, the air intake adjusting device 150, and the air exhaust adjusting device 160, respectively, so as to drive the control device 140, the pressure transmitting device 130, the air intake adjusting device 150, and the air exhaust adjusting device 160 into working states by air pressure; the control device 140 is configured to receive the current pressure value from the pressure transmitting device 130, and when the current pressure value is lower than a pressure preset value and a difference between the current pressure value and the pressure preset value is greater than a first preset deviation value, the control device 140 is further configured to perform a proportional integral operation on the current pressure value to generate a first control signal, and control the air inlet adjustment device 150 to be opened according to the first control signal so as to supplement air into the bentonite tank 110 until the pressure in the bentonite tank 110 rises to a value that is less than or equal to the first preset deviation value, and the control device 140 controls the air inlet adjustment device 150 to be closed, thereby keeping the pressure in the bentonite tank 110 stable; when the current pressure value is higher than the pressure preset value and the difference between the current pressure value and the pressure preset value is greater than the second preset deviation value, the control device 140 is further configured to perform a proportional integral operation on the current pressure value to generate a second control signal, and control the exhaust adjusting device 160 to open according to the second control signal, so as to exhaust the bentonite tank 110 until the pressure in the bentonite tank 110 is reduced to a value less than or equal to the second preset deviation value, and the control device 140 controls the exhaust adjusting device 160 to be closed, so as to keep the pressure in the bentonite tank 110 stable. Through this kind of setting, this application can realize automatic control to the pressure in the bentonite jar 110, reduces the cost of labor, has also improved the control accuracy of bentonite jar 110 internal pressure simultaneously, further makes bentonite jar 110 pressurize system's working property more stable.
It should be noted that, referring to fig. 3 to 4, the automatic pressure maintaining system for the bentonite tank further includes a skid-mounted support and a protective housing, the bentonite tank 110, the pressure transmitting device 130, the air intake adjusting device 150, the air exhaust adjusting device 160, the control device 140 and the air processing assembly 120 are all integrated on the skid-mounted support, and the protective housing is mounted on the skid-mounted support.
Referring to fig. 1, it can be understood that the automatic bentonite tank pressure maintaining system further includes a bentonite input line 111 and a bentonite output line 112, the bentonite input line 111 is connected with an input pipe of the bentonite tank 110, the bentonite output line 112 is connected with an output pipe of the bentonite tank 110, and the bentonite input line 111 and the bentonite output line 112 are respectively disposed at both sides of the bentonite tank 110.
Note that, by providing the bentonite input line 111, bentonite is input into the bentonite tank 110 through the bentonite input line 111. Through setting up bentonite output pipeline 112 to with bentonite follow bentonite jar 110 through bentonite pump in bentonite output pipeline 112, thereby pour into in the soil bin into, play the groundwater that reduces the excavation face and gush out to the pressure cabin in, reduce the gushing and take place.
Referring to fig. 1, it can be understood that the automatic bentonite tank pressure maintaining system further includes an air input line 125, the air input line 125 being selectively communicated with an air intake pipe of the bentonite tank 110 through an air intake adjusting device 150, the air input line 125 being further connected with the air treatment assembly 120, the air input line 125 being for delivering air to the bentonite tank 110 and the air treatment assembly 120, respectively.
It should be noted that, by setting the air input line 125 so that when the current pressure value is lower than the preset pressure value and the difference between the current pressure value and the preset pressure value is greater than the first preset deviation value, the control device 140 controls the air inlet adjusting device 150 to be opened so as to control the external air to be input into the bentonite tank 110 from the air input line 125 until when the difference between the current pressure value and the preset pressure value in the bentonite tank 110 is less than or equal to the first preset deviation value, the control device 140 controls the air inlet adjusting device 150 to be closed, and the air input line 125 stops delivering air into the bentonite tank 110 so as to keep the pressure in the bentonite tank 110 stable.
Referring to fig. 1, it can be understood that the air treatment assembly 120 includes a filter 121, a first pressure reducing device 122, and an oil separator 123, one end of the filter 121 is connected to an air input line 125, the other end of the filter 121 is connected to the first pressure reducing device 122, one end of the first pressure reducing device 122 remote from the filter 121 is connected to the oil separator 123, and one end of the oil separator 123 remote from the first pressure reducing device 122 is connected to an intake air adjusting device 150 and an exhaust air adjusting device 160, respectively.
It should be noted that, an opening matching with a pipeline connected to the filter 121 is formed on the air input pipeline 125, so that the pipeline is communicated with the air input pipeline 125 through the opening of the air input pipeline 125, a part of air is conveyed to the filter 121 through the pipeline connected to the filter 121 by the air input pipeline 125, the air enters the filter 121 to separate liquid water and liquid oil drops in the air, dust and solid impurities in the air are filtered, the air filtered by the filter 121 is conveyed to the first pressure reducing device 122 again, the air is primarily reduced in pressure and then conveyed to the oil separator 123, so as to separate gaseous oil in the air, a part of the air separated by the oil separator 123 is conveyed to the control device 140 and the pressure transmitting device 130 respectively, and the other part of the air separated by the oil separator 123 is conveyed to the air inlet adjusting device 150 and the air outlet adjusting device 160 respectively, so as to supply air to the air inlet adjusting device 150 and the air outlet adjusting device 160, and the air outlet adjusting device 160 are driven in a pneumatic manner to enter into a working state.
Referring to fig. 1, it can be understood that the bentonite tank automatic pressure maintaining system further includes a second pressure reducing device 124, one end of the second pressure reducing device 124 is connected to the oil separator 123, and the other end of the pressure reducing device is connected to the pressure transmitting device 130 and the control device 140, respectively.
It should be noted that, a portion of the air separated by the oil separator 123 is first delivered to the second pressure reducing device 124 for secondary pressure reduction, and the air reduced in pressure by the second pressure reducing device 124 is respectively and averagely delivered to the pressure transmitting device 130 and the control device 140, so as to supply air to the pressure transmitting device 130 and the control device 140, and the pressure transmitting device 130 and the control device 140 are driven to enter the working state by a pneumatic manner.
Referring to fig. 1, it can be appreciated that the air intake adjusting device 150 includes a first air valve positioner 151 and an air intake adjusting valve 152, the first air valve positioner 151 is connected to the air intake adjusting valve 152, the control device 140 and the air handling unit 120, respectively, and the air intake adjusting valve 152 is disposed on the air input line 125.
The first pneumatic valve positioner 151 is provided with a first transfer line and a second transfer line, one end of the first transfer line is connected to the first valve positioner, the other end of the first transfer line is connected to the control device 140, one end of the second transfer line is connected to the second pressure reducing device 124, and the other end of the second transfer line is connected to the output end of the oil separator 123.
By providing the first pneumatic valve positioner 151, the output power of the air intake regulating valve 152 can be increased, the occurrence of the situation of transmission delay of the first control signal is reduced, the moving speed of the valve rod of the air intake regulating valve 152 is accelerated, the linearity of the valve of the air intake regulating valve 152 can be improved, the friction force of the valve rod of the air intake regulating valve 152 is overcome, and the influence of unbalanced force is eliminated, so that the accurate positioning of the air intake regulating valve 152 is ensured.
Referring to fig. 1, it can be understood that the automatic bentonite tank pressure maintaining system further includes an air output line connected to the air output pipe of the bentonite tank 110, and the exhaust adjusting device 160 includes a second pneumatic valve positioner 161 and an exhaust adjusting valve 162, wherein the second pneumatic valve positioner 161 is connected to the exhaust adjusting valve 162, the control device 140 and the air processing assembly 120, respectively, and the exhaust adjusting valve 162 is disposed on the air output line.
The second pneumatic valve positioner 161 is provided with a third transfer line and a fourth transfer line, one end of the third transfer line is connected to the second valve positioner, the other end of the third transfer line is connected to the control device 140, one end of the fourth transfer line is connected to the second pressure reducing device 124, and the other end of the fourth transfer line is connected to the output end of the oil separator 123.
By setting the second valve positioner, the output power of the exhaust gas regulating valve 162 can be increased, the occurrence of the situation of delay in the transmission of the second control signal can be reduced, the moving speed of the valve rod of the exhaust gas regulating valve 162 can be accelerated, the linearity of the valve of the exhaust gas regulating valve 162 can be improved, the friction force of the valve rod of the exhaust gas regulating valve 162 can be overcome, and the influence of unbalanced force can be eliminated, so that the correct positioning of the exhaust gas regulating valve 162 can be ensured.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While the foregoing is directed to the preferred embodiments of the present application, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the present application, such changes and modifications are also intended to be within the scope of the present application.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. An automatic pressurize system of bentonite jar, characterized by comprising:
a bentonite tank for storing bentonite;
the pressure transmitting device is connected with the bentonite tank and is used for detecting the pressure in the bentonite tank and determining the current pressure value;
the air inlet adjusting device is connected with the bentonite tank;
the exhaust adjusting device is connected with the bentonite tank;
the control device is respectively connected with the pressure transmitting device, the air inlet adjusting device and the air outlet adjusting device and is used for receiving the current pressure value from the pressure transmitting device;
the air treatment assembly is respectively connected with the control device, the pressure transmitting device, the air inlet adjusting device and the exhaust adjusting device, and is used for respectively supplying air to the control device, the pressure transmitting device, the air inlet adjusting device and the exhaust adjusting device.
2. The automatic bentonite tank pressure maintaining system according to claim 1, further comprising a bentonite input line and a bentonite output line, wherein the bentonite input line is connected with the input pipe of the bentonite tank, the bentonite output line is connected with the output pipe of the bentonite tank, and the bentonite input line and the bentonite output line are respectively provided at both sides of the bentonite tank.
3. The automatic bentonite tank pressure maintaining system of claim 1 further comprising an air input line in selective communication with the air inlet conduit of the bentonite tank through the air inlet regulator, the air input line further connected to the air handling assembly, the air input line for delivering air to the bentonite tank and the air handling assembly, respectively.
4. The bentonite tank automatic pressure maintaining system according to claim 3, wherein the air treatment assembly comprises a filter, a first pressure reducing device and an oil separator, one end of the filter is connected to the air input line, the other end of the filter is connected to the first pressure reducing device, one end of the first pressure reducing device away from the filter is connected to the oil separator, and one end of the oil separator away from the first pressure reducing device is connected to the intake regulator and the exhaust regulator, respectively.
5. The automatic pressure maintaining system of a bentonite tank according to claim 4, further comprising a second pressure reducing device, wherein one end of the second pressure reducing device is connected to the oil separator, and the other end of the second pressure reducing device is connected to the pressure transmitting device and the control device, respectively.
6. The bentonite tank automatic pressure maintaining system of claim 3 wherein the air intake regulator comprises a first pneumatic valve positioner and an air intake regulator valve, the first pneumatic valve positioner being respectively connected to the air intake regulator valve, the control device and the air handling assembly, the air intake regulator valve being disposed on the air input line.
7. The automatic bentonite tank pressure maintaining system according to claim 1, further comprising an air output pipeline connected to the air output pipeline of the bentonite tank, wherein the exhaust regulator comprises a second pneumatic valve positioner and an exhaust regulator valve, the second pneumatic valve positioner is respectively connected with the exhaust regulator valve, the control device and the air processing assembly, and the exhaust regulator valve is provided on the air output pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322350343.8U CN220569093U (en) | 2023-08-31 | 2023-08-31 | Automatic pressure maintaining system for bentonite tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322350343.8U CN220569093U (en) | 2023-08-31 | 2023-08-31 | Automatic pressure maintaining system for bentonite tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220569093U true CN220569093U (en) | 2024-03-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322350343.8U Active CN220569093U (en) | 2023-08-31 | 2023-08-31 | Automatic pressure maintaining system for bentonite tank |
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| Country | Link |
|---|---|
| CN (1) | CN220569093U (en) |
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2023
- 2023-08-31 CN CN202322350343.8U patent/CN220569093U/en active Active
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