CN211112235U - Cleaning device for two-loop valve cage - Google Patents
Cleaning device for two-loop valve cage Download PDFInfo
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- CN211112235U CN211112235U CN201921826138.1U CN201921826138U CN211112235U CN 211112235 U CN211112235 U CN 211112235U CN 201921826138 U CN201921826138 U CN 201921826138U CN 211112235 U CN211112235 U CN 211112235U
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Abstract
The utility model belongs to the technical field of the nuclear power maintenance, concretely relates to a belt cleaning device for two return circuits valve cages. A cleaning device for a two-circuit cage comprising: the device comprises a cleaning tank, a first pump, a cleaning solution storage tank, a second pump, a third pump, a water inlet pipe, a cleaning solution filling pipe and a cleaning solution recovery pipe; the cleaning box is used for accommodating a two-loop valve cage to be cleaned; the first pump is a high-pressure pump and can pump water from a water source into the cleaning box through the water inlet pipe so as to wash the two-loop valve cage; a cleaning liquid filling pipe and a cleaning liquid recovery pipe are connected between the cleaning liquid storage tank and the cleaning tank; the second pump is connected to the cleaning liquid filling pipe and is used for pumping the cleaning liquid in the cleaning liquid storage tank into the cleaning tank through the cleaning liquid filling pipe; the third pump is connected to the cleaning solution recovery pipe and is used for pumping the cleaning solution in the cleaning tank into the cleaning solution storage tank through the cleaning solution recovery pipe. The cleaning device provided by the embodiment of the disclosure can improve the cleaning efficiency of the two-loop valve cage.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power maintenance, concretely relates to a belt cleaning device for two return circuits valve cages.
Background
Since the 3 rd fuel circulation operation of the 2# unit of the square mountain, three main water supply ARE (main water supply flow control system) main water supply regulating valves (the models ARE respectively 2ARE031V L/032V L/033V L) have abnormal increasing trend, and slowly increase from 52% to the maximum approximate 70%.
The maintenance personnel disassemble and overhaul the main water supply regulating valve 2ARE032V L with the largest opening degree, and replace the valve cage of the regulating valve, the unit finds that the opening degree of the main water supply regulating valve 2ARE032V L is reduced by 16% -18% after the unit operates again, and then further observes that most of the inner walls of the small circulation holes on the valve cage ARE attached with sediments or scales, the scales ARE compact and firm, the through-flow cross section of the hole diameter is reduced, and the valve opening degree is slowly increased for maintaining the main water supply flow.
Because the main water supply regulating valve is the core equipment of a power plant and the valve cage is limited in spare parts at present, the old valve cage with accumulated scale on the surface of the through-flow small hole of the valve cage needs to be effectively cleaned and descaled so as to be reused. The diameter of the opening of the small circulation hole of the valve cage of the main water supply regulating valve is only about 6mm (millimeter), so that the valve cage cannot be descaled by a common mechanical cleaning method, and the valve cage is cleaned by a conventional high-pressure water gun and an ultrasonic method, so that the accumulated scale is still deposited in the hole even though the accumulated scale is loosened a little, the effect is very little, and the accumulated scale cannot be removed.
SUMMERY OF THE UTILITY MODEL
To overcome the problems of the related art, a cleaning device for a two-circuit cage is provided.
According to an aspect of an embodiment of the present disclosure, there is provided a cleaning device for a two-circuit cage, the cleaning device comprising: the device comprises a cleaning tank, a first pump, a cleaning solution storage tank, a second pump, a third pump, a water inlet pipe, a cleaning solution filling pipe and a cleaning solution recovery pipe;
the cleaning box is used for accommodating a two-loop valve cage to be cleaned;
the first pump is a high-pressure pump, the first pump is connected with a water source, a water inlet pipe is connected between the cleaning box and the first pump, and the first pump can pump water from the water source into the cleaning box through the water inlet pipe so as to flush the two-loop valve cage;
the cleaning solution filling pipe and the cleaning solution recovery pipe are connected between the cleaning solution storage tank and the cleaning tank;
the second pump is connected to the cleaning liquid filling pipe and is used for pumping the cleaning liquid in the cleaning liquid storage tank into the cleaning tank through the cleaning liquid filling pipe;
and the third pump is connected to the cleaning solution recovery pipe and is used for pumping the cleaning solution in the cleaning tank into the cleaning solution storage tank through the cleaning solution recovery pipe.
In one possible implementation, the cleaning device for a two-circuit valve cage further comprises: a cleaning solution outlet filter;
the cleaning solution outlet filter is connected to the cleaning solution filling pipe and is used for filtering the cleaning solution filled into the cleaning tank from the cleaning solution storage tank.
In one possible implementation, the cleaning device for a two-circuit valve cage further comprises: a cleaning fluid circuit filter;
the cleaning solution loop filter is connected to the cleaning solution recovery pipe and is used for filtering the cleaning solution which flows back from the cleaning tank to the cleaning solution storage tank.
In one possible implementation mode, the top end of the cleaning box is provided with a top cover, a handle penetrating through the top cover is arranged in the middle of the top cover, the lower end of the handle is provided with a protruding structure, and the protruding structure is clamped on the inner side or the edge of a two-circuit valve cage to be cleaned;
a rotary disc is arranged at the bottom end in the cleaning box and can rotate relative to the bottom end, and the two-loop valve cage to be cleaned is arranged on the rotary disc;
the handle can rotate relative to the top cover and drives the two-loop valve cage to be cleaned to rotate.
In one possible implementation, the cleaning device for a two-circuit valve cage further comprises: a motor;
the motor is arranged on the top cover and connected with the handle, and the motor can drive the handle to rotate.
In one possible implementation, the cleaning device for a two-circuit valve cage further comprises: corrosion degree and/or pH value detection means;
the device comprises a top cover, a testing through hole is formed in the top cover, and a corrosion degree and/or PH value detection device is inserted in the testing through hole and used for detecting the corrosion degree and/or PH value of cleaning liquid in the cleaning tank to the two-loop valve cage.
In one possible implementation, the cleaning device for a two-circuit valve cage further comprises: a heating device;
the heating device is arranged on the cleaning box and used for heating the liquid in the cleaning box.
In one possible implementation, the cleaning device for a two-circuit valve cage further comprises: a temperature measuring device;
the temperature measuring device is arranged on the cleaning box and used for measuring the temperature inside the cleaning box.
In one possible implementation, the cleaning device for a two-circuit valve cage further comprises: the supporting structure comprises two sliding rails, a supporting frame, a cross beam and a lifting structure;
the two slide rails are erected above the cleaning box through the supporting frame, and two ends of the cross beam are erected on the two slide rails through pulleys and can move along the two slide rails;
the handle is connected to the cross beam through a lifting structure;
through elevation structure can pass through the handle drives the top cap goes up and down.
The beneficial effects of the utility model reside in that: in the disclosed embodiment, a cleaning liquid closed circulation loop is formed between the cleaning tank and the cleaning liquid storage tank, so that the full contact of effective components in the cleaning liquid is facilitated, the scale deposits in the circulation small holes on the two-loop valve cage are dissolved, the efficiency of cleaning the two-loop valve cage is accelerated, the water can be used for rapidly washing the two-loop valve cage through the structure of the first pump and the water inlet pipe, and the more thorough cleaning of the dissolved scale deposits and the residual cleaning liquid remained on the two-loop valve cage is facilitated. Therefore, the structure of the embodiment of the disclosure is matched with the structural characteristics of the two-loop valve cage, and the scale deposit of the two-loop valve cage can be effectively cleaned.
Drawings
FIG. 1 is a schematic illustration of a cleaning device for a two-circuit cage in accordance with an exemplary embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic illustration of a cleaning device for a two-circuit cage in accordance with an exemplary embodiment. As shown in FIG. 1, the cleaning apparatus for a two-circuit cage may include: a washing tank 10, a first pump 11, a washing liquid storage tank 12, a second pump 13, a third pump 14, a water inlet pipe 15, a washing liquid filling pipe 16, a washing liquid recovery pipe 17; the cleaning box 10 is used for accommodating a two-circuit valve cage to be cleaned; the first pump 11 is a high-pressure water pump, the first pump 11 is connected with a water source, a water inlet pipe 15 is connected between the cleaning tank 10 and the first pump 11, and the first pump 11 can pump water from the water source into the cleaning tank 10 through the water inlet pipe 15 to flush the two-loop valve cage; the cleaning solution filling pipe 16 and the cleaning solution recovery pipe 17 are connected between the cleaning solution storage tank 12 and the cleaning tank 10; the second pump 13 is connected to the washing liquid filling pipe 16, and is used for pumping the washing liquid in the washing liquid storage tank 12 into the washing tank 10 through the washing liquid filling pipe 16; the third pump 14 is connected to the cleaning solution recovery pipe 17, and is configured to pump the cleaning solution in the cleaning solution tank 10 into the cleaning solution storage tank 12 through the cleaning solution recovery pipe 17.
In the disclosed embodiments, the first pump, the second pump, and the third pump may represent mechanical devices that convey or pressurize a fluid. The first, second, and third are only used to indicate differences in the pump, and do not have other meanings. Wherein the first pump may be a high pressure pump that may deliver or pressurize fluid at a relatively high pressure (e.g., a pressure greater than 10 MPa).
The cleaning liquid of the embodiments of the present disclosure may include any one of an alkaline solution, an acidic solution, or a passivation liquid. The materials of the elements of the cleaning device for the two-circuit valve cage can be plastics or metals, the material of the cleaning device for the two-circuit valve cage is not limited in the embodiment of the disclosure, and the materials of the elements can be the same, partially the same or different.
The washing tank and the washing liquid storage tank may have a cylindrical structure (it should be noted that the washing tank may also be a rectangular parallelepiped or an irregular polyhedron, etc., and the shape of the washing tank and the shape of the washing liquid storage tank are not limited in the embodiment of the present disclosure).
As an example of this embodiment, the water inlet of the first pump 11 may be connected to a water source, and a water inlet pipe 15 may be connected between the first pump 11 and the cleaning tank 10, for example, as shown in fig. 1, a connection position between the water inlet pipe 15 and the cleaning tank 10 may be located on the top cover 101 of the cleaning tank 10, so as to facilitate more sufficient flushing of the two-circuit valve cage from top to bottom), the first pump 11 may be a high-pressure water pump, and after the first pump 11 is turned on, the water from the water source may be pumped into the cleaning tank 10 through the water inlet pipe 15 at a higher speed (for example, about 10 m/s), so as to flush the two-circuit valve cage placed in the cleaning tank 10. A cleaning solution filling pipe 16 and a cleaning solution recovery pipe 17 can be connected between the cleaning solution storage tank 12 and the cleaning tank 10, wherein an interface between the cleaning solution filling pipe 16 and the cleaning tank 10 can be arranged on a top cover 101 of the cleaning tank 10, so that the cleaning solution can be sprayed to the two-loop valve cage from top to bottom; the interface of the wash liquid fill pipe 16 with the wash liquid storage tank 12 may be located at a lower position on the sidewall of the wash liquid storage tank 12; the interface of wash liquid recovery pipe 17 with wash tank 10 may be provided at a lower position on the side wall of wash tank 10, and the interface of wash liquid recovery pipe 17 with wash liquid storage tank 12 may be provided at an upper position on the side wall of wash liquid storage tank 12. The second pump 13 may be connected to the wash liquid fill pipe 16, and the second pump 13 may pump the wash liquid in the wash liquid storage tank 12 into the wash tank 10 through the wash liquid fill pipe 16 (e.g., the wash liquid may be pumped into the wash tank 10 at a rate of about 0.7 m/s); a third pump 14 may be connected to rinse solution recovery line 17, and third pump 14 may be connected to pump rinse solution from rinse tank 10 into rinse solution storage tank 12 via rinse solution recovery line 17 (e.g., rinse solution may be pumped into rinse solution storage tank 12 at a rate of about 0.7 m/s). Thus, when the second pump 13 and the third pump 14 are turned on, the wash liquid can be circulated between the wash tank 10 and the wash liquid storage tank 12, facilitating sufficient contact of the wash liquid with the two-circuit cage.
In the disclosed embodiment, a cleaning liquid closed circulation loop is formed between the cleaning tank and the cleaning liquid storage tank, so that the full contact of effective components in the cleaning liquid is facilitated, the scale deposits in the circulation small holes on the two-loop valve cage are dissolved, the efficiency of cleaning the two-loop valve cage is accelerated, the water can be used for rapidly washing the two-loop valve cage through the structure of the first pump and the water inlet pipe, and the more thorough cleaning of the dissolved scale deposits and the residual cleaning liquid remained on the two-loop valve cage is facilitated. Therefore, the structure of the embodiment of the disclosure is matched with the structural characteristics of the two-loop valve cage, and the scale deposit of the two-loop valve cage can be effectively cleaned.
In one possible implementation, as shown in fig. 1, the cleaning device for a two-circuit cage may further include: a cleaning liquid outlet filter 18; the wash liquid outlet filter 18 is connected to the wash liquid fill pipe 16 for filtering wash liquid injected into the wash tank 10 from the wash liquid storage tank 12. The cleaning device for a two-circuit cage may further include: a cleaning liquid circuit filter 19; the wash liquid circuit filter 19 is connected to the wash liquid recovery pipe 17 for filtering the wash liquid returned from the wash tank 10 to the wash liquid storage tank 12.
For example, the wash liquid outlet filter 18 may be connected to an interface between the wash liquid storage tank 12 and the wash liquid fill pipe 16, and the wash liquid circuit filter 19 may be connected to an interface between the wash liquid storage tank 12 and the wash liquid recovery pipe 17, so that, when wash liquid circulates between the wash tank 10 and the wash liquid storage tank 12, the wash liquid outlet filter 18 and the wash liquid circuit filter 19 may filter scales and the like dissolved in the wash liquid, effectively maintaining purity of effective components in the wash liquid contacting the two-circuit valve cage, thereby enabling the effectiveness of the wash liquid to be exerted more permanently.
In a possible implementation manner, the top end of the cleaning tank 10 may further have a top cover 101, a handle 102 is disposed in the middle of the top cover 101 and penetrates through the top cover 101, and the lower end of the handle 102 has a protruding structure (not shown in the figure) which is clamped on the inner side or edge of the two-circuit valve cage to be cleaned; a rotary table (not shown in the figure) is arranged at the bottom end inside the cleaning box 10, the rotary table can rotate relative to the bottom end, and the two-circuit valve cage to be cleaned is arranged on the rotary table; the handle 102 can rotate relative to the top cover 101 and drive the two-circuit valve cage to be cleaned to rotate.
For example, the top cover 101 may be separated from the tank body of the cleaning tank 10 (wherein, the top cover 101 may be disposed on the cleaning tank 10, for example, by a snap-fit clip, which may effectively prevent the top cover 101 from sliding), a through hole may be formed at the center of the top cover 101, the handle 102 may pass through the through hole, the lower end of the handle 102 may be provided with a protruding structure, the bottom end inside the cleaning tank 10 may be provided with a turntable, and the turntable may rotate relative to the bottom end. When the two-loop valve cage needs to be cleaned, the top cover 101 can be uncovered, and the two-loop valve cage to be cleaned can be arranged on the turntable; and the top cover 101 is covered, at this time, the protruding structure at the lower end of the handle 102 can be clamped on the inner wall of the two-loop valve cage, and the part of the handle 102 extending out of the top cover 101 can be rotated to drive the two-loop valve cage to rotate. The protruding structure of the handle 102 may be a cross support frame or a circular plate, and the embodiment of the disclosure does not limit the specific form of the protruding structure, as long as the protruding structure can clamp the two-circuit valve cage, so that the handle 102 can drive the two-circuit valve cage to rotate. Therefore, the two-loop valve cage and the cleaning liquid can move relatively to each other to enable the cleaning liquid to be in contact with the two-loop valve cage more fully, and further improvement of cleaning efficiency is facilitated.
In one possible implementation, the cleaning device for a two-circuit valve cage may further include: a motor 20; the motor 20 is arranged on the top cover 101 and connected with the handle 102, and the motor 20 can drive the handle 102 to rotate.
For example, the motor 20 and the handle 102 may be connected through a gear or a belt, so that when the motor 20 rotates, the handle 102 can be driven to rotate, and the connection manner between the motor 20 and the handle 102 is not limited in the embodiments of the present disclosure. Thus, the use of the motor 20 to rotate the handle 102 may result in a more stable rotational speed and a longer duration of rotation for the two-circuit cage.
In one possible implementation, the cleaning device for a two-circuit valve cage may further include: corrosion degree detection means 21 or PH value detection means 21. Be provided with the test through-hole on belt cleaning device's top cap 101, can insert corrosion degree detection device 21 or PH value detection device 21 and establish in corresponding test through-hole, can take out corrosion degree detection device 21 or PH value detection device 21 in abluent in-process to confirm the corrosion degree of washing liquid to two return circuit valve cages in the cleaning process, or the PH value of washing liquid, perhaps be used for wasing the PH value of the water that two return circuit valve cages remained the washing liquid. Therefore, the chemical monitoring of the cleaning process can be realized, the progress of cleaning the residual cleaning liquid of the two-loop valve cage is effectively controlled, or the excessive corrosion of the cleaning liquid to the two-loop valve cage is effectively avoided.
In one possible implementation, the cleaning device for a two-circuit valve cage further comprises: a heating device 22; the heating device 22 is disposed on the washing tank 10, and is used for heating the liquid inside the washing tank 10. For example, the heating device 22 may be disposed on a chassis of the cleaning tank 10, and for another example, a plurality of heater ports may be disposed on the cleaning tank 10, each heater port may be plugged with a heater, and the heater ports plugged with the heaters may be subjected to a waterproof treatment to prevent liquid leakage. The heating device 22 may be, for example, a heating tube, and the embodiment of the disclosure does not limit the type of the heating device 22. In this disclosed embodiment, can adopt the washing liquid of predetermineeing the temperature to soak and wash two return circuit valve cages, for example, can adopt the washing liquid that the temperature is 80 ℃ (degree centigrade) to soak and wash two return circuit valve cages. In this way, in the embodiment of the present disclosure, the efficiency of dissolving the scale in the cleaning liquid can be further increased by heating the cleaning liquid by the heating device 22.
In one possible implementation, the cleaning device for a two-circuit valve cage further comprises: a temperature measuring device 23; the temperature measuring device 23 is provided on the washing tank 10 for measuring the temperature inside the washing tank 10. Therefore, the heating temperature of the cleaning liquid can be accurately controlled, and the temperature of the cleaning liquid can be controlled within the most effective temperature range. The temperature measuring device 23 may be, for example, a resistance temperature sensor or a thermocouple temperature sensor, and the type of the temperature measuring device 23 is not limited in the embodiment of the disclosure.
In one possible implementation, the cleaning apparatus for a two-circuit cage further comprises: a support structure, which may include two slide rails 24, a support frame 25, a cross beam 26, and a lifting structure 27; for example, as shown in fig. 1, the supporting frame 25 may be a rectangular frame-shaped structure, the supporting frame 25 may be erected above the washing tank 10, two parallel sliding rails 24 may be connected above the supporting frame 25, pulleys may be provided at two ends of the cross beam 26, each pulley may be embedded in one sliding rail 24, so that the cross beam 26 may move back and forth along the sliding rail 24, the handle 102 may be connected to the cross beam 26 through a lifting structure 27 (for example, a nut may be provided on the cross beam 26, a screw thread adapted to the nut of the cover is provided on the handle 102, the handle 102 is screwed into the nut, the handle 102 is lifted or lowered by rotating the handle 102, and also, for example, the lifting structure 27 may be a miniature electric lifter, which is not limited to the lifting structure 27 in the embodiment of the present disclosure), so that the top cover 101 may be lifted or lowered by the lifting structure 27, and the top cover 101 may move between the sliding rails 24, this can reduce the impact on the top cover 101 caused by manual conveyance.
In one possible implementation, the cleaning device for a two-circuit valve cage may further include: a cart 28; the cart 28 may be used at least to carry and move the wash tank 10. Therefore, the cleaning box 10 can be moved to a position for disassembling the two-loop valve cage, the two-loop valve cage is loaded to the cleaning box 10, the cleaning box 10 loaded with the two-loop valve cage is moved to other positions for cleaning operation, and the two-loop valve cage does not need to be carried.
In a possible implementation manner, ball valves can be arranged on the water inlet pipe 15, the cleaning solution filling pipe 16 and the cleaning solution recovery pipe 17 to control the on-off of the water inlet pipe 15, the cleaning solution filling pipe 16 and the cleaning solution recovery pipe 17. It should be noted that the ball valve is not limited in the embodiments of the present disclosure.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. The schematic drawings of the present invention include modifications and variations if they fall within the scope of the claims and their equivalents.
Claims (9)
1. A cleaning device for a two-circuit cage, the cleaning device comprising: the device comprises a cleaning tank, a first pump, a cleaning solution storage tank, a second pump, a third pump, a water inlet pipe, a cleaning solution filling pipe and a cleaning solution recovery pipe;
the cleaning box is used for accommodating a two-loop valve cage to be cleaned;
the first pump is a high-pressure pump, the first pump is connected with a water source, a water inlet pipe is connected between the cleaning box and the first pump, and the first pump can pump water from the water source into the cleaning box through the water inlet pipe so as to flush the two-loop valve cage;
the cleaning solution filling pipe and the cleaning solution recovery pipe are connected between the cleaning solution storage tank and the cleaning tank;
the second pump is connected to the cleaning liquid filling pipe and is used for pumping the cleaning liquid in the cleaning liquid storage tank into the cleaning tank through the cleaning liquid filling pipe;
and the third pump is connected to the cleaning solution recovery pipe and is used for pumping the cleaning solution in the cleaning tank into the cleaning solution storage tank through the cleaning solution recovery pipe.
2. The cleaning device for a two-circuit cage according to claim 1, further comprising: a cleaning solution outlet filter;
the cleaning solution outlet filter is connected to the cleaning solution filling pipe and is used for filtering the cleaning solution filled into the cleaning tank from the cleaning solution storage tank.
3. The cleaning device for a two-circuit cage according to claim 1, further comprising: a cleaning fluid circuit filter;
the cleaning solution loop filter is connected to the cleaning solution recovery pipe and is used for filtering the cleaning solution which flows back from the cleaning tank to the cleaning solution storage tank.
4. The cleaning device for the two-circuit valve cage according to claim 1, wherein the top end of the cleaning box is provided with a top cover, a handle penetrating through the top cover is arranged in the middle of the top cover, the lower end of the handle is provided with a protruding structure, and the protruding structure is clamped on the inner side or the edge of the two-circuit valve cage to be cleaned;
a rotary disc is arranged at the bottom end in the cleaning box and can rotate relative to the bottom end, and the two-loop valve cage to be cleaned is arranged on the rotary disc;
the handle can rotate relative to the top cover and drives the two-loop valve cage to be cleaned to rotate.
5. The cleaning device for a two-circuit cage according to claim 4, further comprising: a motor;
the motor is arranged on the top cover and connected with the handle, and the motor can drive the handle to rotate.
6. The cleaning device for a two-circuit cage according to claim 4, further comprising: corrosion degree and/or pH value detection means;
the device comprises a top cover, a testing through hole is formed in the top cover, and a corrosion degree and/or PH value detection device is inserted in the testing through hole and used for detecting the corrosion degree and/or PH value of cleaning liquid in the cleaning tank to the two-loop valve cage.
7. The cleaning device for a two-circuit cage according to claim 1, further comprising: a heating device;
the heating device is arranged on the cleaning box and used for heating the liquid in the cleaning box.
8. The cleaning device for a two-circuit cage according to claim 1, further comprising: a temperature measuring device;
the temperature measuring device is arranged on the cleaning box and used for measuring the temperature inside the cleaning box.
9. The cleaning device for a two-circuit cage according to claim 4, further comprising: the supporting structure comprises two sliding rails, a supporting frame, a cross beam and a lifting structure;
the two slide rails are erected above the cleaning box through the supporting frame, and two ends of the cross beam are erected on the two slide rails through pulleys and can move along the two slide rails;
the handle is connected to the cross beam through a lifting structure;
through elevation structure can pass through the handle drives the top cap goes up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921826138.1U CN211112235U (en) | 2019-10-28 | 2019-10-28 | Cleaning device for two-loop valve cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921826138.1U CN211112235U (en) | 2019-10-28 | 2019-10-28 | Cleaning device for two-loop valve cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211112235U true CN211112235U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921826138.1U Active CN211112235U (en) | 2019-10-28 | 2019-10-28 | Cleaning device for two-loop valve cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211112235U (en) |
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2019
- 2019-10-28 CN CN201921826138.1U patent/CN211112235U/en active Active
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