CN115681541A - Sealing element and electric valve - Google Patents
Sealing element and electric valve Download PDFInfo
- Publication number
- CN115681541A CN115681541A CN202110862126.XA CN202110862126A CN115681541A CN 115681541 A CN115681541 A CN 115681541A CN 202110862126 A CN202110862126 A CN 202110862126A CN 115681541 A CN115681541 A CN 115681541A
- Authority
- CN
- China
- Prior art keywords
- seal
- sealing element
- sealing
- metal layer
- plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model provides a sealing member, includes the metal level, first nonmetal layer and the second nonmetal layer that the axial set up, the metal level has first face and second face, along the axial of sealing member, first face and second face are located the both sides that carry on the back of the body of metal level, first nonmetal layer is attached to the first face of metal level, the second metal level is attached to the second face of metal level, the sealing member includes at least one annular bellying, the bellying is along the axis direction protrusion of sealing member. The thickness of the non-metal layer with the sealing function of the sealing element can be reduced through the combination of the metal layer and the non-metal layer, so that a channel for high-pressure working medium to permeate is narrowed, and the leakage of the working medium is reduced; in addition, the sealing element comprises at least one annular bulge, the bulge protrudes along the axial direction of the sealing element, at least two sealing areas can be formed when the sealing element is applied to the electric valve through the arrangement of the bulge, and a good sealing effect can be achieved.
Description
Technical Field
The application relates to the field of sealing, in particular to a sealing element and an electric valve comprising the same.
Background
The electric valve comprises a valve part and a valve body assembly, wherein the valve part and the valve body assembly are sealed by adopting a rubber sealing piece to prevent a working medium from leaking outwards, but when the working medium is a high-pressure medium, such as CO 2 The high-pressure working medium of the refrigerant (the working pressure of the refrigerant is more than or equal to 17 MPa) may penetrate through the rubber sealing element at high pressure, so that the electric valve may leak. How to design a sealing element to reduce the risk of leakage of the working medium is a technical problem to be improved.
Disclosure of Invention
The application aims to provide a sealing element which is beneficial to reducing the risk of leakage of working medium.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a seal comprising a metal layer, a first non-metal layer and a second non-metal layer disposed axially, the metal layer having a first face and a second face, the first and second faces being on opposite sides of the metal layer in the axial direction of the seal, the first non-metal layer being attached to the first face of the metal layer and the second metal layer being attached to the second face of the metal layer, the seal comprising at least one annular protrusion protruding in the axial direction of the seal.
An electric valve comprises a valve component and a valve body component, wherein the valve body component comprises an opening part which forms a valve body cavity, the valve component comprises a connecting seat, at least part of the connecting seat is positioned in the valve body cavity, the valve component is connected and fixed or limited with the valve body component through the connecting seat, the electric valve comprises a sealing element, the sealing element is pressed between the connecting seat and the valve body component, and the sealing element is the sealing element.
The sealing element and the electric valve comprise a first nonmetal layer, a metal layer and a second nonmetal layer which are axially arranged, wherein the first nonmetal layer and the second nonmetal layer are attached to a first surface and a second surface of the metal layer, and the thickness of the nonmetal layer with the sealing effect of the sealing element can be reduced through the combination of the metal layer and the nonmetal layer, so that a channel for the permeation of a working medium is narrowed, and the leakage of the working medium is reduced; in addition, the sealing element comprises at least one annular protruding part, the protruding part protrudes along the axial direction of the sealing element, when the sealing element is applied to the electric valve through the protruding part, the sealing element is pressed between the connecting seat and the valve body component, at least two sealing areas can be formed, and a better sealing effect is achieved.
Drawings
FIG. 1 is a perspective view of a first embodiment of a seal;
FIG. 2 is a cross-sectional view of the seal of FIG. 1 taken along a first plane;
FIG. 3 is an enlarged view of a portion M of FIG. 2;
figure 4 is a schematic cross-sectional view of the seal of figure 1 in use in an electrically operated valve;
FIG. 5 is an enlarged view of a portion N of FIG. 4;
figure 6 is a schematic view of another cross-section of the seal of figure 1 in use in an electrically operated valve;
fig. 7 is a perspective view of the connecting socket shown in fig. 4;
FIG. 8 is a structural schematic diagram of a section of the valve body assembly shown in FIG. 4;
FIG. 9 is an enlarged fragmentary view of a cross-sectional view of the second embodiment of the seal taken along a first plane;
figure 10 is an enlarged partial view of the seal of figure 9 applied to an electrically operated valve;
FIG. 11 is an enlarged fragmentary view of a cross-sectional view of the third embodiment of the seal taken along a first plane;
figure 12 is an enlarged fragmentary view of the seal of figure 11 applied to an electrically operated valve;
FIG. 13 is an enlarged fragmentary view of a cross-sectional view of the fourth embodiment of the seal taken along a first plane;
figure 14 is an enlarged partial view of the seal of figure 13 applied to an electrically operated valve;
FIG. 15 is an enlarged fragmentary view of a fifth embodiment of the seal taken in cross section along a first plane;
figure 16 is an enlarged view of a portion of the seal of figure 15 applied to an electrically operated valve.
Detailed Description
The sealing element provided by the application can be applied to a thermal management system taking R134a or other conventional refrigerants as working media, and particularly can be applied to CO 2 Refrigerant is the heat management system of working medium. The invention will be further described with reference to the following figures and specific examples:
as shown in fig. 1 to 3, the sealing member 1 is formed in a ring shape as a whole and has a through hole 14. The sealing member 1 comprises a non-metal layer 20 and a metal layer 10, wherein the non-metal layer comprises a first non-metal layer 10 and a second non-metal layer 30, and the axial direction refers to the direction of an axis AA' of the sealing member 1. The metal layer 20 has a first surface and a second surface, the first surface and the second surface are located on opposite sides of the metal layer 20 along an axial direction of the sealing element, the first nonmetal layer 10 can be attached to the first surface of the metal layer 20 by coating, adhesion, compression bonding and the like, the second nonmetal layer 30 can be attached to the second surface of the metal layer 20 by coating, adhesion, compression bonding and the like, the thickness of the first nonmetal layer 10 is 5-50 μm, the thickness of the second nonmetal layer 30 is 5-50 μm, the thickness of the metal layer 20 is 0.1-1.0 mm, the thicknesses of the first nonmetal layer 10 and the second nonmetal layer 30 are very thin relative to the thickness of the metal layer 20, and the thickness of the whole sealing element 1 is approximately 0.1-1.0 mm. The metal layer 20 can be made of steel, iron, aluminum and other metals or alloys; the first nonmetal layer 10 and the second nonmetal layer 30 may be made of the same or different materials, and may be made of elastic nonmetal materials such as rubber and its derivatives, polytetrafluoroethylene (PTFE), and the like. The ring shape herein is understood to include a ring shape in which the through-hole has a circular, rectangular, triangular, oval or irregular shape, unless otherwise specified.
The seal 1 comprises a first portion 111 and a second portion 112, the seal 1 comprises at least one annular projection 11, the projection 11 projects in the axial direction of the seal 1, the projection 11 comprises a first portion 111, and the first portion 111 projects relative to the second portion 112. The seal 1 further comprises a third portion 12, with reference to fig. 2 and 3, in a radial direction of the seal 1, the first portion 111 is closer to the through hole 14 of the seal 1 than the second portion 112 and the third portion 12, the first portion 111 has a first end and a second end, the second portion 112 and the third portion 12 also have a first end and a second end, respectively, the second end of the first portion 111 is connected to the first end of the second portion 112, the first end of the first portion 111 is not connected to the second portion 112, the second end of the second portion 112 is connected to the first end of the third portion 12, the second end of the third portion 12 is not connected to the second portion, the first portion 111 and the third portion 12 are connected by the second portion 112, and the third portion 12 is relatively far away from the through hole 14 of the seal 1. The first portion 111, the second portion 112, and the third portion 12 are all annular, and along the axial direction of the seal 1, the first portion 111, the second portion 112, and the third portion 12 each include the first nonmetal layer 10, the metal layer 20, and the second nonmetal layer 30, and the thickness of the entire seal 1 is substantially uniform, that is, the thicknesses of the first portion 111, the second portion 112, and the third portion 12 are substantially the same. Defining a first plane, the axis AA' is located in the first plane, and taking the first plane as a section to make the seal shown in fig. 1 into a section view, so as to obtain the section views shown in fig. 2 and 3, in conjunction with fig. 2 and 3, the first portion 111 and the third portion 12 are arranged in parallel, and the protruding portion 11 is arranged to protrude relative to the third portion 12 along the axial direction with the third portion 12 as a reference. The seal 1 has a first seal portion 113 and a second seal portion 115, the first seal portion 113 being located at the junction of the first portion 111 and the second portion 112, and the second seal portion being located at the junction of the second portion 112 and the third portion 12. In this embodiment, the first portion 111, the second portion 112, and the third portion 12 are plate-shaped with substantially flat surfaces, wherein the first portion 111 and the third portion 12 are disposed along a radial direction of the seal 1, the second portion 112 is disposed in an inclined manner with respect to the first portion 111 or the third portion 12, and an included angle α is formed between the second portion 112 and the first portion 111, and the included angle α is about 60 ° to about 175 °. The extension length of the first portion 111 in the first plane is L1, the extension length of the second portion 112 in the first plane is L2, the extension length of the third portion 12 in the first plane is L3, and the following relations are satisfied among L1, L2, and L3:
L2＝(0.2～2)*L1
L3＝(0～2)*L1。
the extension length L2 of the second portion 112 in the first plane may be 0.2 to 2 times L1 based on the extension length L1 of the first portion 111 in the first plane, otherwise, the sealing performance of the sealing member 1 is not favorable, and specifically, L2 is about 1.2 times L1 in the present embodiment. The third portion 12 has an extension L3 in the first plane of 0 to 2 times L1, specifically, L3 is about 1 time L1 in the present embodiment.
In the sealing member 1 of the present embodiment, the metal layer 20 is used as a support, the nonmetal layer is attached to both sides of the metal layer by coating, adhesion, compression, or the like, the thickness of the nonmetal layer for sealing of the sealing member can be reduced by combining the metal layer and the nonmetal layer, the thickness of the nonmetal layer is very small compared to the thickness of a common O-ring (usually about 1.78 mm), and the sealing is reducedThe thickness of the non-metal layer which plays a role of sealing of the piece 1 enables the channel which is permeated by the working medium to be narrowed, is beneficial to reducing the leakage of the working medium, and is suitable for a heat management system using R134a or other conventional refrigerants, particularly suitable for CO serving as the working medium 2 In the heat management system of the refrigerant, the CO can be effectively reduced 2 The electric valve has the risk of leakage due to leakage of refrigerant at high pressure. If the thickness of the nonmetal layer is too small, the seal 1 does not reach the designed contact pressure, and if the thickness of the nonmetal layer is too large, the possibility of penetration increases, and therefore, the thicknesses of the first nonmetal layer 10 and the second nonmetal layer 20 are preferably 5 to 50 μm. Because the thickness of the non-metal layer is very thin compared with that of a common O-shaped ring, the elastic deformation which can be generated is small, and the metal layer 20 can provide large elastic deformation to compensate the elastic deformation of the sealing element 1, so that the sealing element 1 has a good sealing effect.
The seal 1 may be used in a thermal management system, particularly for CO 2 Refrigerant is the heat management system of working medium. In thermal management systems, an electric valve is often used as a throttling element or an opening and closing element, and referring to fig. 4, fig. 4 shows an embodiment in which the seal 1 shown in fig. 1 is applied to an electric valve 100. Of course, the sealing element 1 can also be used for other components of a thermal management system that require sealing, such as electric pumps, compressors or pipe joints. The electric valve 100 includes a driving member 2, a valve member 3, and a valve body assembly 4, a part of the valve member 3 is located in a valve body cavity 40 formed by the valve body assembly 4, the valve member 3 is connected to the valve body assembly 4, the driving member 2 is located at an outer periphery of another part of the valve member 3, the driving member 2 is connected to the valve member 3 or the driving member 2 is connected to the valve body assembly 4, and the electric valve 100 is electrically and/or signal-connected to the outside through the driving member 2.
The driving component 2 comprises an outer shell 21, a stator assembly 22, a circuit board 23 and an interface part 24, wherein the outer shell 21 and the interface part 24 can be assembled or integrally formed, the outer shell 21 is formed with a shell cavity 210, the stator assembly 22 and the circuit board 23 are positioned in the shell cavity 210, the stator assembly 22 is positioned on the periphery of part of the valve component 3, and the stator assembly 22 is electrically connected and/or signal connected with the circuit board 23. The interface portion 24 includes a pin 241, a middle portion of the pin 241 is fixed with the housing of the interface portion 24 by injection molding, one end portion of the pin 241 is located in the housing cavity 210 and electrically connected and/or signal connected with the stator assembly 22, and the other end portion of the pin 241 is located in the socket cavity 240 formed by the interface portion 24 and used for electrically and/or signal connected with the outside.
The valve component 3 includes a rotor assembly 31, a screw rod assembly 32, a valve core 33, a connecting seat 34, a valve core seat assembly 35 and a sleeve 36, the screw rod assembly 32 includes a screw rod 321, the rotor assembly 31 is fixedly connected or limited to one end of the screw rod 321, the other end of the screw rod 321 is connected to the valve core 33 by a screw thread, specifically, the other end of the screw rod 321 may be provided with an external thread, the valve core 33 is provided with an internal thread corresponding to the screw rod 321, the connecting seat 34 is located at the periphery of a portion of the screw rod assembly 32 and the periphery of a portion of the valve core 33, the valve core 35 seat assembly is located at the periphery of another portion of the valve core 33, the connecting seat 34 is fixedly connected to the valve core seat assembly 35, the sleeve 36 is sleeved on the periphery of the rotor assembly 31, and the sleeve 36 is fixedly connected to the connecting seat 34.
Referring to fig. 6, the valve element 33 includes a limiting portion 331, a portion of the limiting portion 331 protrudes from an outer side wall of the valve element 33 along a radial direction of the valve element 33, the limiting portion 331 is a non-rotating body, referring to fig. 7, the connecting seat 34 has a fitting portion 341 fitting with the limiting portion 331, the limiting portion 331 is located in an inner cavity formed by the fitting portion 341, the limiting portion 331 is in limiting fit with the fitting portion 341 to limit circumferential rotation of the valve element 33, and the limiting and fitting structure of the limiting portion 331 and the fitting portion 341 may have various forms as long as it can limit circumferential rotation of the valve element 33.
Referring to fig. 4, the screw rod assembly 32 further includes a bearing 322 and a collar 323, the bearing 322 is located at the outer periphery of a portion of the screw rod 321, the bearing 322 is located in the inner cavity of the connecting seat 34, the bearing 322 is connected and fixed or connected and limited with the connecting seat 34, the collar 323 is located at the outer periphery of a portion of the screw rod 321, and the collar 323 is connected and fixed with the screw rod. The screw rod 321 comprises a boss 321a, the boss 321a is formed by protruding along the radial direction of the screw rod 321, the bearing 322 is located between the collar 323 and the boss 321a along the axial direction of the screw rod assembly 32, and the screw rod 321 is axially limited by the abutment of the boss 321a and the bearing 322 or the abutment of the collar 323 and the bearing 322.
The valve core seat assembly 35 has a valve port 351, when the rotor assembly 31 rotates circumferentially under the excitation of the magnetic field of the stator assembly 22, the rotor assembly 31 drives the screw rod 321 to rotate circumferentially together, the screw rod 321 rotating circumferentially is in threaded connection with the valve core 33, and under the condition that the screw rod 321 is limited axially and the valve core 33 is limited circumferentially, the valve core 33 can perform linear reciprocating motion along the axial direction of the screw rod 321 under the action of threads, so that the valve core 33 can adjust the opening degree of the valve port 351 by being close to or far away from the valve port 351, and further, a throttling can be formed at the valve port 351.
Referring to fig. 4, 5 and 8, the valve body assembly 4 includes an opening portion 41, the opening portion 41 forms a valve body cavity 40, a part of the valve member 3 is located in the valve body cavity 40, and the valve member 3 is connected and fixed or limited with the valve body assembly 4. To prevent the working medium in the valve body chamber 40 from leaking out from the fitting gap between the valve member 3 and the valve body assembly 4, especially when the working medium is a high-pressure medium such as CO 2 In the case of refrigerant, a seal structure is further provided between the valve member 3 and the valve body assembly 4, and the seal structure is the seal 1 described above. Specifically, the opening portion 41 includes a first stepped portion 411 and a first side wall 412, the first side wall 412 is disposed closer to the opening of the valve body cavity 40 than the first stepped portion 411 in the axial direction of the opening portion 41, and at least a part of the first side wall 412 is provided with an internal thread section. Accordingly, the coupling socket 34 further includes a flange portion 342, and the flange portion 342 is formed to be protruded in a radial direction of the coupling socket 34. The up and down directions are set in the direction shown in fig. 4, and the end surface of the flange portion 342 close to the first step portion 411 is the lower end surface and the end surface of the flange portion 342 far from the first step portion 411 is the upper end surface along the axial direction of the connecting socket 34.
The electric valve 100 further includes a compression nut 5, the compression nut 5 is located on the outer periphery of the portion of the connecting seat 34, an external thread section is provided on the outer periphery of the compression nut 5, at least a portion of the compression nut 5 is located in the valve body cavity 40, and the compression nut 5 is rotated to screw-fit the compression nut 5 to the first side wall 412 of the opening portion 41, so that the compression nut 5 abuts against the upper end surface of the flange portion 342, thereby connecting and fixing the valve member 3 and the valve body assembly 4.
Referring to fig. 5, the packing 1 is compressed between the flange portion 342 and the first stepped portion 411, and specifically, the packing 1 is located between the lower end surface of the flange portion 342 and the first stepped portion 411Between the upper end surfaces, the first nonmetal layer 10 of the sealing member 1 is located above the second nonmetal layer 30, the first nonmetal layer 10 is located near the lower end surface of the flange portion 342, and the second nonmetal layer 30 is located near the upper end surface of the first step portion 411, but the second nonmetal layer 30 may be located above the first nonmetal layer 10, which is only defined for convenience of the following description. Since the packing 1 is compressed between the flange portion 342 and the first stepped portion 411, the first end portion of the first portion 111 is inclined toward the side of the first stepped portion 411, and the second end portion of the third portion 12 is inclined toward the side of the flange portion 342. The compressed sealing member 1 has at least two sealing areas, and the first sealing area a is located on the upper surface of the sealing member 1, namely the first nonmetal layer 10, and is specifically located on the upper surface of the first sealing part 113; the second sealing region b is located at the lower surface of the sealing member 1, i.e., the second non-metal layer 30, particularly, at the lower surface of the second sealing portion 115. Of course, the sealing area of the sealing member 1 may be larger than two, for example, by designing the lengths of the first portion 111 and the third portion 12 such that the lower surface of the first end portion of the first portion 111 abuts the first step portion 411 to form the third sealing area c, and/or the upper surface of the second end portion of the third portion 12 abuts the flange portion 342 to form the fourth sealing area d. When the electric valve 100 is in operation, CO 2 When the refrigerant flows along the assembly gap between the connecting seat 34 and the valve body assembly 4, at least one sealing area is formed by the sealing element 1 and the connecting seat 34, at least one sealing area is formed by the connecting seat 34 and the valve body assembly 4, the sealing areas are arranged in a staggered mode along the radial sealing area of the electric valve, and the connecting line between the sealing areas of the first plane is not parallel to the axis of the electric valve 100, so that a good sealing effect can be achieved. Furthermore, the refrigerant penetrates in the radial direction of the electric valve 100 in the present application, reducing the thickness of the non-metallic layer of the seal 1 that is responsible for the sealing effect so that CO 2 The channel for the permeation of the refrigerant is narrowed, which is beneficial to reducing CO 2 Leakage of refrigerant.
Referring to fig. 9, fig. 9 shows a second embodiment of the sealing member 1, which is different from the sealing member 1 shown in fig. 1 to 3 in that L3 is 0 in this embodiment, that is, the sealing member 1 has only a first portion 111 and a second portion 112, and the first portion 111 and the second portion 112 are plate-shaped with substantially flat surfaces. The protruding portion 11 includes a first portion 111, and the first portion 111 protrudes relative to a second portion 112. The first portion 111 has a first end and a second end, the second portion 112 has a first end and a second end, and the second end of the first portion 111 and the first end of the second portion 112 are connected. The seal has at least a first seal portion 113 and a second seal portion 115, the first seal portion 113 being located at the junction of the first portion 111 and the second portion 112, the second seal portion 115 being located at the second end of the second portion 112. The seal 1 is V-shaped along the first plane. When the seal 1 is applied to the electric valve 100, referring to fig. 10, the compressed seal 1 has at least two sealing areas a, b, the upper surface of the first sealing portion 113 abuts against the flange portion 342 to form a first sealing area a, and the lower surface of the second sealing portion 115 of the seal 1 abuts against the first step portion 411 to form a second sealing area b, but the seal 1 may also include a third sealing portion 114, the third sealing portion 114 is located at the first end portion of the first portion 11, and the lower surface of the third sealing portion 114 abuts against the first step portion 411 to form a third sealing area c.
Referring to fig. 11, fig. 11 shows a third embodiment of the sealing member 1, which is different from the second embodiment shown in fig. 9 in that the first portion 111 and the second portion 112 have a certain curvature, the first portion 111 and the second portion 112 together form a convex portion 11, and the convex portion 11 is in an arch shape. A first plane OO 'is defined, which is a symmetrical plane of the packing 1, the first portion 111 and the second portion 112 are symmetrical with respect to the first plane OO', the packing 1 has a first sealing portion 113, a second sealing portion 115, and a third sealing portion 114, the first sealing portion 113 is located at a connection portion of the first portion 111 and the second portion 112, the second sealing portion 115 is located at a second end portion of the second portion 112, and the third sealing portion 114 is located at a first end portion of the first portion 111. When the seal 1 shown in fig. 11 is applied to the electric valve 100, referring to fig. 12, the compressed seal 1 has three sealing areas, the first sealing portion 113 of the seal 1 abuts against the flange portion 342 to form a first sealing area a, and the second sealing portion 115 and the third sealing portion 114 of the seal 1 both abut against the first step portion 411 to form a second sealing area b and a third sealing area c. As another embodiment, the first portion 111 and the second portion 112 may be asymmetrical, for example, the first portion 111 may be a plate with a substantially flat surface, and the second portion 112 may be an arc portion having a curvature. The extension length L1 of the first portion 111 in the first plane and the extension length L2 of the second portion 112 in the first plane satisfy the following relationship, with respect to the upper surface of the seal 1: l2= (0.2 to 2) × L1.
Referring to fig. 13, fig. 13 is a fourth embodiment of the seal 1. Unlike the third embodiment shown in fig. 11, in the present embodiment, the sealing member 1 further includes a third portion 12 and a fourth portion 13, the third portion 12 and the fourth portion 13 are both plate-shaped and have substantially flat surfaces, the third portion 12 is connected to the second portion 112, and the fourth portion 13 is connected to the first portion 111 to define a first plane OO ', the first plane OO' is a symmetry plane of the sealing member 1, the first portion 111 and the second portion 112 are symmetric with respect to the first plane OO ', and the third portion 12 and the fourth portion 13 are symmetric with respect to the first plane OO'. The first portion 111 and the second portion 112 together form an arcuate projection 11, and when the seal 1 shown in fig. 13 is applied to the electric valve 100, the projection 11 projects towards the flange portion 342 relative to the third portion 12 and the fourth portion 13, see fig. 14. Since the seal member 1 has a certain curvature, and the extension length L1 of the first portion 111 in the first plane, the extension length L2 of the second portion 112 in the first plane, the extension length L3 of the third portion 12 in the first plane, and the extension length L4 of the fourth portion 13 in the first plane, which are obtained based on the upper surface or the lower surface of the seal member 1, are different from each other, L1, L2, L3, and L4 satisfy the following relationships with reference to the upper surface of the seal member 1 in the present application:
L2＝(0.2～2)*L1；
L3＝(0～2)*L1；
L4＝(0～2)*L1。
the seal member 1 has a first seal portion 113, a second seal portion 115, and a third seal portion 114, the first seal portion 113 being located at a junction of the first portion 111 and the second portion 112, the second seal portion 115 being located on a lower surface of the third portion 12, and the third seal portion 114 being located on a lower surface of the fourth portion 13. The pressed packing 1 has three sealing areas, the first sealing portion 113 of the packing 1 abuts against the flange portion 342 to form a first sealing area a, and the second sealing portion 115 and the third sealing portion 114 of the packing 1 both abut against the first stepped portion 411 to form a second sealing area b and a third sealing area c.
Referring to fig. 15, fig. 15 shows a fifth embodiment of the seal 1. Unlike the fourth embodiment shown in fig. 13, the sealing member 1 of the present embodiment has two protrusions 11, 11', and the protrusions 11 and 11' may be arch-shaped protrusions having the same structure, or one of the protrusions may be an arch-shaped protrusion and the other one may be a V-shaped protrusion, which is not limited herein. In the embodiment, the protruding portion 11 and the protruding portion 11' have the same structure and are both arch-shaped protrusions. The convex part 11' comprises a fifth part 15 and a sixth part 16, the third part 12 is connected with the fifth part 15, the fifth part 15 is connected with the sixth part 16, the sealing element 1 further comprises a seventh part 17, the seventh part 17 is in a plate shape with a roughly flat surface, the sixth part 16 is connected with the seventh part 17, and the extension length L5 of the fifth part in the first plane, the extension length L6 of the sixth part in the first plane and the extension length L7 of the seventh part in the first plane satisfy the following relations by taking the upper surface of the sealing element 1 as a reference: l6= (0.2 to 2) × L5; l7= (0 to 2) × L5.
In addition to the first, second and third sealing portions 113, 115 and 114, the seal member 1 has a fourth sealing portion 116 and a fifth sealing portion 117, the fourth sealing portion 116 being located at the junction of the fifth portion 15 and the sixth portion 16, and the fifth sealing portion 117 being located on the lower surface of the seventh portion 17. When the seal 1 shown in fig. 15 is applied to the electric valve 100, referring to fig. 16, the compressed seal 1 has 5 sealing areas, the first sealing portion 113 abuts against the flange portion 342 to form a first sealing area a, the second sealing portion 115 and the third sealing portion 114 abut against the first step portion 411 to form a second sealing area b and a third sealing area c, the fourth sealing portion 116 abuts against the flange portion 342 to form a fourth sealing area d, and the fifth sealing portion 117 abuts against the first step portion 411 to form a fifth sealing area e. A plurality of sealing areas are formed by arranging a plurality of bulges, which is favorable for strengthening the sealing effect, and CO 2 The refrigerant can overflow the electric valve after passing through a plurality of sealing areas, which is beneficial to reducing CO 2 Leakage of refrigerant.
It will be appreciated that the number of the sealing member projections may be 3, 4 or more, and is not limited to the 1 or 2 shown in the drawings.
It should be noted that: although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted for those skilled in the art, and all technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.
Claims (10)
1. A seal, characterized by: the sealing element comprises a metal layer, a first nonmetal layer and a second nonmetal layer, wherein the metal layer, the first nonmetal layer and the second nonmetal layer are axially arranged, the metal layer is provided with a first surface and a second surface, the first surface and the second surface are positioned on two opposite sides of the metal layer along the axial direction of the sealing element, the first nonmetal layer is attached to the first surface of the metal layer, the second metal layer is attached to the second surface of the metal layer, and the sealing element comprises at least one annular bulge which protrudes along the axial direction of the sealing element.
2. The seal of claim 1, wherein: the thickness of the first non-metal layer is 5-50 μm, the thickness of the second non-metal layer is 5-50 μm, the thickness of the metal layer is 0.1-1.0 mm, and the material of the first non-metal layer or the second non-metal layer comprises one or more of rubber, rubber derivatives and polytetrafluoroethylene; the metal layer is made of one or more of steel, iron and aluminum.
3. The seal of claim 1 or 2, wherein: the sealing element comprises a first part and a second part, the first part and the second part are plate-shaped, and the first part and the second part respectively comprise the first nonmetal layer, a metal layer and a second nonmetal layer; the raised portion includes a first portion that is raised relative to the second portion.
4. The seal of claim 3, wherein: the first portion and the second portion are arranged at an included angle of 60-175 degrees, a first plane is defined, the axis of the sealing element is located on the first plane, the extension length L1 of the first portion on the first plane and the extension length L2 of the second portion on the first plane satisfy the following relations:
L2＝(0.2～2)*L1。
5. the seal of claim 4, wherein: the sealing element further comprises a third part, the third part is plate-shaped, the third part is arranged in parallel with the first part, and the third part is connected with the second part; an extension length L3 of the third portion in the first plane satisfies the following relationship:
L3＝(0～2)*L1。
6. the seal of claim 1 or 2, wherein: the seal comprises a first portion and a second portion, the first portion and the second portion have a curvature, and the protrusion is arched; defining a first plane in which the axis of the seal lies, the extension L1 of the first portion in the first plane and the extension L2 of the second portion in the first plane satisfying the following relationship:
L2＝(0.2～2)*L1。
7. the seal of claim 6, wherein: the seal further includes a third portion and a fourth portion, the third portion and the fourth portion are plate-shaped, the third portion is connected to the second portion, the fourth portion is connected to the first portion, and an extension length L3 of the third portion in the first plane and an extension length L4 of the fourth portion in the first plane satisfy the following relationship:
L3＝(0～2)*L1
L4＝(0～2)*L1。
8. the seal of claim 7, wherein: the sealing element further comprises a fifth part and a sixth part, the fifth part and the sixth part have curvature, the sealing element further comprises a seventh part, the seventh part is plate-shaped, the fifth part is connected with the third part, the fifth part is connected with the sixth part, the sixth part is connected with the seventh part, the first part, the second part, the fifth part and the sixth part form an arch-shaped bulge respectively, and the extension length L5 of the fifth part in the first plane, the extension length L6 of the sixth part in the first plane and the extension length L7 of the seventh part in the first plane satisfy the following relations: l6= (0.2 to 2) × L5; l7= (0 to 2) × L5.
9. An electrically operated valve, including valve part and valve body part, the valve body part includes the opening, the opening forms the valve body chamber, the valve part includes the connecting seat, at least part the connecting seat is located in the valve body chamber, the valve part passes through the connecting seat with the valve body part is connected fixed or connect spacing, its characterized in that: the electric valve comprises a sealing element, the sealing element is compressed between the connecting seat and the valve body component, and the sealing element is the sealing element of any one of claims 1 to 8.
10. An electrically operated valve as claimed in claim 9, wherein: the opening part comprises a first step part and a first side wall, the first side wall is closer to the opening of the valve body cavity than the first step part along the axial direction of the opening part, at least part of the first side wall is provided with an internal thread section, the connecting seat comprises a flange part, and the flange part is formed by protruding along the radial direction of the connecting seat; the electric valve further comprises a compression nut, the compression nut is located on the periphery of the connecting seat, the compression nut is in threaded fit with the first side wall of the opening portion, the compression nut abuts against one end face of the flange portion, the sealing element is pressed between the flange portion and the first step portion, the sealing element abuts against the flange portion to form a sealing area, the sealing element abuts against the first step portion to form the sealing area, and the sealing area is arranged in a staggered mode along the radial direction of the electric valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110862126.XA CN115681541A (en) | 2021-07-29 | 2021-07-29 | Sealing element and electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110862126.XA CN115681541A (en) | 2021-07-29 | 2021-07-29 | Sealing element and electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115681541A true CN115681541A (en) | 2023-02-03 |
Family
ID=85058467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110862126.XA Pending CN115681541A (en) | 2021-07-29 | 2021-07-29 | Sealing element and electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115681541A (en) |
-
2021
- 2021-07-29 CN CN202110862126.XA patent/CN115681541A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5168514B2 (en) | Oil seal | |
| JP4324607B2 (en) | Non-asbestos gasket | |
| US10690141B2 (en) | Seal structure and supercharger provided with the seal structure | |
| JP2020037996A (en) | Fluorine resin butterfly valve | |
| WO2008004303A1 (en) | Shaft sealing device | |
| TWI670434B (en) | Seals | |
| CN115681541A (en) | Sealing element and electric valve | |
| WO2023093665A1 (en) | Globe valve | |
| JP6693977B2 (en) | Sealed connection device | |
| WO2019214194A1 (en) | Combined seal of magnetic fluid and lip seal | |
| CN218440665U (en) | Valve device | |
| JP4330875B2 (en) | Sealing device | |
| WO2020253796A1 (en) | Shaft assembly, and compressor comprising shaft assembly | |
| JP2018040363A (en) | Corrosion and erosion prevention structure, pump including the same, and manufacturing method and repair method for pump | |
| CN117167490A (en) | Electric valve | |
| JP5897693B2 (en) | Shaft sealing structure | |
| CN117167491A (en) | Electric valve | |
| JP2007146880A (en) | Tube fitting | |
| CN218294470U (en) | Valve device | |
| CN116085487A (en) | Electric valve | |
| CN209838757U (en) | Sandwich type labyrinth seal structure for low-temperature liquid rocket engine turbine pump | |
| CN108087248B (en) | Compressor and refrigeration equipment | |
| CN117189879A (en) | Valve device | |
| CN114215718B (en) | Inner exhaust pipe connecting structure, compressor and temperature regulating equipment | |
| CN220623074U (en) | Pipeline connecting assembly and thermal management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |