Intermediate connecting device

Abstract

The utility model discloses an intermediate connecting device, which is used for connecting an electromagnetic valve and a pressing device, and comprises a connecting main body, the connecting main body is provided with a first end face and a second end face which are arranged adjacently or oppositely; the connecting body is further provided with a plurality of ventilation channels. The ventilation channel comprises a pressure input section, a middle connecting section and a pressing section; the pressure input section penetrates through the first end face and is connected with an air inlet of the electromagnetic valve. The pressing section penetrates through the second end face and is connected with the pressing device. And the middle connecting section is arranged in the connecting main body and is communicated with the pressure input section and the pressing section. According to the intermediate connecting device, the electromagnetic valve can be connected with the pressing device, the electromagnetic valve can be conveniently pressed and checked off line, and whether leakage exists in the electromagnetic valve or not or whether the inner leakage amount meets the pressure maintaining requirement of the hydraulic control butterfly valve or not is found out.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valve pressure testing, in particular to an intermediate connecting device. Background Art

[0002] A new type of solenoid valve is used in the control system of the hydraulic butterfly valve in a nuclear power plant. The solenoid valve controls the opening and closing of the hydraulic butterfly valve after the circulating water pump in the circulating water system. To ensure the normal use of the solenoid valve, it is necessary to perform a pressure test on the solenoid valve.

[0003] At present, the solenoid valves are all pressure-tested on the hydraulic control system and cannot be pressure-tested offline. As a result, it is impossible to detect in advance whether the solenoid valves may have excessive external or internal leakage. The existence of this hidden danger may lead to delays in the overhaul period at the least, or even cause unit transients at the worst. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an intermediate connecting device.

[0005] The technical solution adopted by the utility model to solve the technical problem is: an intermediate connecting device for connecting the solenoid valve and the pressure device, the intermediate connecting device comprises a connecting body; the connecting body is provided with a first end face and a second end face, the first end face is adjacent to or opposite to the second end face;

[0006] The connecting body is also provided with a plurality of ventilation channels; the ventilation channels include a pressure input section, an intermediate connecting section, and a pressure section; wherein the pressure input section passes through the first end surface and is connected to the air inlet of the solenoid valve; the pressure section passes through the second end surface and is connected to the pressure device; the intermediate connecting section is arranged in the connecting body, connecting the pressure input section and the pressure section.

[0007] Preferably, in the intermediate connection device of the utility model, the connection body is further provided with a plurality of fixing holes fixedly connected to the solenoid valve, and the plurality of fixing holes are provided outside the plurality of pressure input sections;

[0008] The fixing hole passes through the first end surface or passes through the first end surface and the second end surface.

[0009] Preferably, in the intermediate connecting device described in the present invention, the intermediate connecting section is an N-type structure or an L-type structure, the first end of the intermediate connecting section is connected to the pressing section, and the second end of the intermediate connecting section is connected to the pressure input section.

[0010] Preferably, in the intermediate connection device described in the present invention, the first end surface is a plane and / or the second end surface is a plane.

[0011] Preferably, in the intermediate connection device of the present invention, the number of the ventilation channels is one, two, three or four.

[0012] The two ventilation channels are arranged linearly on the first end surface and / or on the second end surface, the three ventilation channels are arranged in an L-shape on the first end surface and / or on the second end surface, and the four ventilation channels are arranged in a mouth-shape on the first end surface and / or on the second end surface.

[0013] Preferably, in the intermediate connecting device described in the utility model, the diameter range of the pressure input section is 1.0 mm-5.5 mm.

[0014] Preferably, in the intermediate connection device described in the utility model, the center distance between two adjacent pressing sections (43) is greater than or equal to 21 mm.

[0015] Preferably, in the intermediate connecting device described in the utility model, the diameter of the intermediate connecting section is greater than or equal to the diameter of the pressure input section, and less than or equal to the diameter of the pressing section.

[0016] Preferably, in the intermediate connection device described in the utility model, the pressing section is a screw hole.

[0017] Preferably, in the intermediate connection device described in the utility model, the intermediate connection device further comprises a pressing connection head, and the pressing connection head is sealedly connected to at least one of the pressing sections for connection and pressing of the pressing device.

[0018] By implementing the utility model, the following beneficial effects are achieved:

[0019] The intermediate connection device of the utility model can realize the connection between the solenoid valve and the pressure device, which is convenient for offline pressure testing of the solenoid valve to find out whether the solenoid valve has external leakage or whether the internal leakage reaches the pressure maintenance requirement of the hydraulically controlled butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 It is a front view of an intermediate connecting device of an embodiment of the utility model;

[0022] Figure 2 This utility model Figure 1 A top view of the intermediate connecting device;

[0023] Figure 3 This utility model Figure 1 A side view of the intermediate connecting device. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a chemical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] See also Figures 1 to 3 An embodiment of the utility model discloses an intermediate connection device for connecting a solenoid valve and a pressure device. The intermediate connection device includes a connection body 1, and the connection body 1 is provided with a first end face 2, a second end face 3 and a plurality of ventilation channels 4, and the first end face 2 is adjacent to or opposite to the second end face 3. The ventilation channel 4 includes a pressure input section 41, an intermediate connection section 42, and a pressure section 43, wherein the pressure input section 41 passes through the first end face 2 and is connected to the air inlet of the solenoid valve, the pressure section 43 passes through the second end face 3 and is connected to the pressure device, and the intermediate connection section 42 is arranged in the connection body 1, connecting the pressure input section 41 and the pressure section 43.

[0029] When the first end face 2 and the second end face 3 are arranged adjacent to each other, the intermediate connecting section 42 is an L-shaped structure. When the first end face 2 and the second end face 3 are arranged opposite to each other, the intermediate connecting section 42 is an N-shaped structure. The first end of the intermediate connecting section 42 is connected to the pressure section 43, and the second end of the intermediate connecting section 42 is connected to the pressure input section 41. It can be understood that in some embodiments, the intermediate connecting section 42 can also be a straight hole, so the pressure input section 41, the intermediate connecting section 42 and the pressure section 43 form a straight hole. The distance between two adjacent pressure sections 43 is the same as the distance between two adjacent air inlets of the solenoid valve, and the pressure section 43 is provided with a thread to facilitate the connection of the pressure device.

[0030] Furthermore, in some embodiments, the first end surface 2 may be a plane, and may be close to the outer end surface where the air inlet of the solenoid valve is located. Similarly, in some embodiments, the second end surface 3 may be a plane, to maintain the flatness of the outer surface of the intermediate connecting device, facilitate production and prevent damage.

[0031] Furthermore, the number of the ventilation channels 4 can be one, two, three or four, or even more, depending on the type of the electromagnetic valve to be pressure-tested. One ventilation channel 4 can pressurize one air inlet of the electromagnetic valve.

[0032] Since there are many types of solenoid valves and the position of the air inlet is not fixed, the arrangement of the ventilation channel 4 can be set accordingly according to the arrangement of the multiple holes on the surface of the solenoid valve. Two ventilation channels 4 are arranged linearly on the first end face 2 and / or on the second end face 3, three ventilation channels 4 are arranged in an L-shape on the first end face 2 and / or on the second end face 3, and four ventilation channels 4 are arranged in a mouth-shape on the first end face 2 and / or on the second end face 3. It is equivalent to that the two pressure input sections 41 are arranged linearly on the first end face 2, and at the same time, the two pressing sections 43 are arranged linearly on the second end face 3. The three pressure input sections 41 are arranged in an L-shape on the first end face 2, and at the same time, the three pressing sections 43 are arranged in an L-shape on the second end face 3. The four pressure input sections 41 are arranged in a mouth-shape on the first end face 2, and at the same time, the four pressing sections 43 are arranged in a mouth-shape on the second end face 3. The air inlet of the solenoid valve is connected to the pressure input section 41 of the ventilation channel 4, and the pressure section 43 is connected to the pressure device. The pressure device can be turned on to perform offline pressure testing on the solenoid valve to find out in advance whether the solenoid valve has external leakage or whether the internal leakage meets the pressure maintenance requirements of the hydraulic butterfly valve. This can save the overhaul period to a certain extent and provide scientific and technological means for the safe and stable operation of the unit.

[0033] In order to realize the versatility of the intermediate connection device of the utility model, in this embodiment, the number of the ventilation channels 4 is four, and the four ventilation channels 4 are arranged in a mouth shape on the first end face 2 and on the second end face 3. That is, the four pressure input sections 41 are arranged in a mouth shape on the first end face 2, and at the same time, the four pressing sections 43 are arranged in a mouth shape on the second end face 3. Preferably, in other embodiments, the four ventilation channels 4 are arranged in a mouth shape on the first end face 2, and other quadrilateral arrangements can be presented on the second end face 3. Similarly, the four pressure input sections 41 are arranged in a mouth shape on the first end face 2, and at the same time, the four pressing sections 43 are arranged in other quadrilateral arrangements on the second end face 3.

[0034] Furthermore, in order to match the air inlet of the solenoid valve and enhance air tightness, the diameter of the pressure input section 41 ranges from 1.0 mm to 5.5 mm, which is similar to or the same as the diameter of the air inlet of the solenoid valve. For example, the diameter of the pressure input section 41 is 1.0 mm, 3.1 mm, 4.0 mm, 5.5 mm, etc.

[0035] Furthermore, the diameters of the pressing section 43 and the intermediate connecting section 42 can be equal to the diameter of the pressure input section 41, and the range can also be between 1.0 mm and 5.5 mm. For example, when the diameter of the pressure input section 41 is 1.0 mm, the diameters of the intermediate connecting section 42 and the pressing section 43 are both 1.0 mm, which can maintain the stability of pressure transmission. In some other embodiments, the diameter of the pressing section 43 can be larger than the diameter of the pressure input section 41, and the diameters of the pressing section 43 and the intermediate connecting section 42 can be set according to actual needs, such as adapting the pressing device.

[0036] Furthermore, the connection body 1 is also provided with a plurality of fixing holes 5 fixedly connected to the solenoid valve, the plurality of fixing holes 5 are provided outside the plurality of pressure input sections 41, and the fixing holes 5 penetrate the first end surface 2 or penetrate the first end surface 2 and the second end surface 3. The bolt holes of the solenoid valve are fastened to the fixing holes 5 by bolts and nuts to fix the intermediate connection device on the solenoid valve.

[0037] Further, to facilitate the connection of the pressing device, the pressing section 43 is a screw hole. Accordingly, the intermediate connection device also includes a pressing connector (not shown in the figure), which is sealed and connected to at least one pressing section 43 for the pressing device to connect and press. Preferably, the diameter of the pressing connector matches the diameter of the pressing section 43 to prevent air leakage. In this embodiment, the pressing connector is fixedly connected to the pressing section 43, and can be quickly connected to the pressing device for ventilation.

[0038] In order to avoid the pressure connector and prevent the pressure connector from covering the port of the adjacent pressure section 43, the center distance between two adjacent pressure sections 43 is greater than or equal to 21 mm, such as 21 mm, 25 mm, 30 mm, etc. When the center distance between two adjacent pressure sections 43 is equal to 21 mm, the distance between the two adjacent pressure sections 43 is the same as the distance between the adjacent air inlets of the solenoid valve.

[0039] By implementing the utility model, the following beneficial effects are achieved:

[0040] The intermediate connection device of the utility model can realize the connection between the solenoid valve and the pressure device, which is convenient for offline pressure testing of the solenoid valve to find out whether the solenoid valve has external leakage, or whether the internal leakage reaches the pressure maintenance requirement of the hydraulic butterfly valve. It can be understood that the above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the patent of the utility model; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope of the claims of the utility model.

Claims

1. An intermediate connecting device for connecting a solenoid valve and a pressure device, characterized in that: The intermediate connection device comprises a connection body (1); the connection body (1) is provided with a first end face (2) and a second end face (3), the first end face (2) and the second end face (3) being arranged adjacent to or opposite to each other; The connecting body (1) is also provided with a plurality of ventilation channels (4); the ventilation channels (4) include a pressure input section (41), an intermediate connecting section (42), and a pressure section (43); wherein the pressure input section (41) passes through the first end surface (2) and is connected to the air inlet of the solenoid valve; the pressure section (43) passes through the second end surface (3) and is connected to the pressure device; the intermediate connecting section (42) is arranged in the connecting body (1) and connects the pressure input section (41) and the pressure section (43).

2. The intermediate connection device according to claim 1, characterized in that: The connecting body (1) is further provided with a plurality of fixing holes (5) fixedly connected to the solenoid valve, and the plurality of fixing holes (5) are arranged outside the plurality of pressure input sections (41); The fixing hole (5) passes through the first end surface (2) or passes through the first end surface (2) and the second end surface (3).

3. The intermediate connection device according to claim 1, characterized in that: The intermediate connecting section (42) is an N-type structure or an L-type structure. The first end of the intermediate connecting section (42) is connected to the pressing section (43), and the second end of the intermediate connecting section (42) is connected to the pressure input section (41).

4. The intermediate connection device according to claim 1, characterized in that: The first end surface (2) is a plane and / or the second end surface (3) is a plane.

5. The intermediate connection device according to claim 1, characterized in that: The number of the ventilation channels (4) is one, two, three or four, The two ventilation channels (4) are arranged linearly on the first end surface (2) and / or on the second end surface (3), the three ventilation channels (4) are arranged in an L-shape on the first end surface (2) and / or on the second end surface (3), and the four ventilation channels (4) are arranged in a mouth-shape on the first end surface (2) and / or on the second end surface (3).

6. The intermediate connection device according to any one of claims 1 to 5, characterized in that: The diameter of the pressure input section (41) ranges from 1.0 mm to 5.5 mm.

7. The intermediate connection device according to any one of claims 1 to 5, characterized in that: The center distance between two adjacent pressing sections (43) is greater than or equal to 21 mm.

8. The intermediate connection device according to any one of claims 1 to 5, characterized in that: The diameter of the intermediate connecting section is greater than or equal to the diameter of the pressure input section (41), and less than or equal to the diameter of the pressing section (43).

9. The intermediate connection device according to any one of claims 1 to 5, characterized in that: The pressing section (43) is a screw hole.

10. The intermediate connection device according to claim 9, characterized in that: The intermediate connection device also includes a pressing connection head, which is sealedly connected to at least one of the pressing sections (43) for connection and pressing by the pressing device.

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